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Forum: Canon, Nikon, Sony, and Other Camera Brands 04-03-2014, 06:06 PM  
Sony RX100 Visible moisture behind lens.
Posted By frascati
Replies: 2
Views: 1,917
Camera has visible moisture behind lens. Otherwise works without fault.

How difficult a surgery is this?

How likely is it that such a condition, over months, has left permanent damage?

Thanks

frascati
Forum: Canon, Nikon, Sony, and Other Camera Brands 03-27-2014, 09:49 AM  
Generic question about image stabilization feature
Posted By frascati
Replies: 2
Views: 861
Hello. On my Samsung 10.2mp SL420 compact digital there are optical and digital image stabilization settings.
I understand the difference as well as the minor and relative disadvantages of them at this level of camera. But I'm
unclear on when/where it might be appropriate to turn both/either one off (there is a setting that utilizes both at once).

If, as I've read, these settings introduce very minor degradation of the image quality (notwithstanding the major impact of motion blur when handheld) would it be reasonable to leave them active in all circumstances except very controlled shots with a tripod? With no remote functionality, not even a cable attachment, for this camera I've simply set the timer for two seconds when using a tripod to eliminate movement.

Actually, I understand that OIS does not degrade the image. Shouldn't it always be active therefore? Why is there even an option for turning it off?

Thanks
Forum: Photographic Technique 12-22-2010, 04:41 PM  
Identify this part on my tripod?
Posted By frascati
Replies: 5
Views: 2,919
So some Brit blublood with too much time on his hands weighed in on the design. Is that all you're suggesting?
Forum: Photographic Technique 12-22-2010, 02:25 PM  
Identify this part on my tripod?
Posted By frascati
Replies: 5
Views: 2,919
What is the black knob affixed to the top? I read up a little on this tripod and apparantly it's an accessory of some sort. Maybe for a monopod?
(thumbnail)


It's aluminum and tapped on the bottom with standard mounting thread. It comes apart like a russian nesting doll and will affix to the camera bottom. There are also large diameter threads on the base of it. They match the threads on a leg if it's unscrewed from the body. Is this a monopod base? Seems kind of elaborate for something that does not allow for pivoting on any axis.
(thumbnail)


I just got this at Goodwill. I looks like it might never even have been used. There is no wear except for a few light scratches and the rubber feet look factory fresh and unmarked. "Star 'D' Davidson Optronics Made in USA

I believe the reason it was never used, and eventually donated, is because two of the legs were completely frozen in extended position. I'm pretty confident that I can fix anything mechanical and it was otherwise such a remarkably beautiful piece of engineering that I couldn't resist. The main panning axis seems to be on ball bearings and everything operates with mercedes benz like smoothness.

I got it home and dismantled the legs and was suprised to find the culprit. The cast aluminum rotating cams within the likewise cammed nylon cinching rings, in all three legs, showed rough casting marks. They'd never been polished. So they'd cam the nylon ring tight enough, but the rough aluminum face on the cam stuck to the nylon and reufused to rotate out of the nylon simply spinning the nylon around in the barrel. Using a fine wire brush on a dremel I smoothed the surfaces of the cams and reassembled. Now the cams/legs work perfectly.

Amazing that so much thought and engineering went into this and for one lazy misstep in final assembly it was all but unusable all these years.
Forum: Photographic Technique 12-02-2010, 04:36 PM  
Automatic slide scanner?
Posted By frascati
Replies: 11
Views: 9,865
Thank you for that! Great points to consider, and I did consider as I read them. So far though I"m not too put off.

As I hinted at, I'm not excessively exacting on the technical side. What I'm aiming for is a reasonable, for my tastes, digitization of my old slides.

So...



All the slides are already organized into carriers (not millions!!!!)



I just want to copy the slides. A lot of this, (more than half) are slides from my father's photography. The negatives are long lost.



I anticipate doing this with a mid level Samsung compact digital. Superior imaging by far compared to any of the affordable "slide scanners" available to me and I"m confident that the quality will meet my needs judging by the work I've done with it so far.



This is where the autofocus feature should come in real handy. The mechanisms in these slide projectors must be iffy at best since, as I recall, when viewing slides the focus is often adjusted while going from slide to slide to get a sharp image on the screen. Auto focusing on the compact digitals is, I'm pretty sure, going to be able to compensate pretty adequately on the image of an illuminated slide.



Ok, now you've succeded in worrying me. But a balance setting fixed in the digital camera is, once it's set, at the very least, not going to be any better or worse than what is being witnessed on a projector screen at any given moment. I'm happy with that.





Again.... as long as I've archived the best that I might expect from viewing these images on a screen, displayed through a slide projector, with sufficient precaution and preparation to deal with what dust can be dealt with, I'm a happy man.
Forum: Photographic Technique 12-02-2010, 03:48 PM  
Automatic slide scanner?
Posted By frascati
Replies: 11
Views: 9,865
Napoleonic apocrypha aside I'm inclined to go for this. I like quixotic references better when such hairbrained scemes are proposed... in fact i get that a lot from friends. I wonder if the Greeks spelled crap cryp? (sorry, just having fun)

...with all respect, and I mean that since I'm a terrible photographer who never took the time to learn as much technique as most of the members here (I'm more prolific than proficient), these are not the answers I expected. In fact, I was most afraid that someone was going to point me to exactly what I wanted to do with a dismissive, "we've all done that.... been there".

So the idea is up for grabs is it? That, despite your scepticism, is pretty encouraging.

I'm not worried about experimenting on my slide projector. Every time I go to goodwill I see a couple of them for five dollars each. This seems eminently doable. An adjustable bracket to hold the camera facing into the projector. Experiment a bit with a high amperage dimmer to get the light level coming from the projector bulb synced up with the camera's auto exposure settings... and start taking digital photos of my slides. Load the slides backwards and I don't even have to make that fix in post-production.

What the hell. I'll do this and report back. Watch this space.

And PLEASE... if you know of any broken trail here, by all means link me to it.
Forum: Photographic Technique 12-02-2010, 01:02 PM  
Automatic slide scanner?
Posted By frascati
Replies: 11
Views: 9,865
Humor me a sec. This may be a really absurd question.
Has anyone heard of converting a carousel type 35mm slide projector into a scanner to digitize archives?

I've got thousands and thousands of slides that I'd like to try digitizing. I did look into some of the available scanners. There is probably a machine like I describe for 5000 dollars, but I didn't even bother to go that far into google. All that is within my budget are the manual slide converters that do four at a time, and slowly at that.

I also saw some diy attempts that involve really painstaking mounting individual slides for "scanning" with a digital camera.

My tinkering side is fascinated with the idea of mounting a digital camera in front of the projector (with a much lower wattage bulb of course) and using the automatic mechanism already in hand to rotate the slides into view of the camera. Camera would be fixed and therefore adjusted for exposure and focus. Once set up it would only be a matter of clicking with one hand and clicking with the other, over and over, till I'm done!
Forum: Troubleshooting and Beginner Help 03-04-2010, 04:17 PM  
Pentax demise?
Posted By frascati
Replies: 37
Views: 6,025
Interesting to see this thread. I was in Holland Michigan last week and decided to stop in a large camera shop to get my hands on a K-X to see what it looked like up close. The owner was behind the counter. He was the only one in the store in fact. And I was probably the only one he'd seen in the last hour. Let's not digress on some flameout concerning the loss of "bricks and mortar". There are obviously too many pros and cons to that situation to make any mention of the trend worth while in one thread. But it was pretty interesting that he had most of the other major brands present except Pentax.

When I asked of this, he got a little pissy. While admitting that it was always a fine product, he claimed that Pentax just never supported it's retailers in the last decade. Whatever support that constitutes, advertising, cardboard signs, fast warranty service.... I don't know. But it sounded like Pentax might just be trying to ride a little ahead of this wave that is online business. I mentioned in another thread that Pentax enjoys a relative "luxury" of manufacturing to primarily photographers (particularly in it's SLR lines). While most of the others, as I put it, are trying to keep themselves visible to the 'gadget as status symbol' crowd and teenagers tweeting with Ashton Kutcher. A typical Pentax photographer is less likely to need the sales person. He knows what he wants because he's done the homework, and also knows where to get it.

It's mostly a good thing for the Pentax consumer, I think. Demise does not look likely. But who ever knows? Ask a Saab owner.
Forum: Troubleshooting and Beginner Help 03-03-2010, 01:32 PM  
K-x or Samsung NX-10
Posted By frascati
Replies: 8
Views: 3,736
I don't misapprehend the friendly sarcasm but...

... if I were being very scientific I'd weight for pure (blind) brand loyalty much less heavily in this forum. I think (could be wrong) that the Pentax crowd is likely to be more objective toward the competition. That guess is based on an assumtion that huge numbers of Canon and Nikon users are likely to be drawn to the product based on name alone without ever even looking at spec. Far fewer Pentax DLSR users likely fall into that category. I'd never ask such a question on a Nikon forum. I would expect mostly flame.

In fact, the generally level headed objectivity I've seen in this forum makes Pentax all the more attractive to me as a community of users.


It also gives me encouragement that Pentax will respond to its generally more discerning base (taken on average) by continuing to offer better overall products for the price. Sure they'd like the bigger market share - they're a money making company. But for the moment, they have the 'luxury' of developing products to mostly photographers. Nikon/Canon, obviously, appeal to photographers alike, but also have to please the rest of the party that's otherwise into gadgets as status symbols and tweeting with Ashton Kutcher.
Forum: Troubleshooting and Beginner Help 03-03-2010, 10:18 AM  
K-x or Samsung NX-10
Posted By frascati
Replies: 8
Views: 3,736
Hemi345
So the K-X is the Bette Davis to Samsung's Joan Crawford now?:D

Anyway, after close scrutiny of the responses here I'm detecting a pattern, and a possible winner.
Forum: Troubleshooting and Beginner Help 03-03-2010, 09:09 AM  
K-x or Samsung NX-10
Posted By frascati
Replies: 8
Views: 3,736
If the K-X and the Samsung NX-10 were presently offered at the same price and....

If you were one...
... not presently established with any brand, owned no lenses or proprietary gear and two...
.... certain enough that the present range of 18-55mm f3.5-56 lens, a 20mm f2.8 pancake lens, a 60mm f2.7 macro lens, a 20-50mm f3.5-56 lens and an 18-200m OIS f3.5-63 lens available for the NX-10 is not going to be a limiting factor for your needs...
Five New Lenses For The Samsung NX10 | Cameras


...which camera would you opt for?

Pentax has a fantastic lens pedigree.
The Samsung has only OIS so no IS would be available to the pancake lens.
The Samsung reportedly lacks manual aputure and manual flash control. Does this actually put these two cameras in such distinctly different categories that comparison is pointless?
The Samsung is a bit smaller with its mirrorless design (part of what I hope you'll comment on the pros and cons of between these two specific cameras).

Any word as to when, and with what, Pentax will enter this segment of the market? And if it did, would it most likely require its own new-format Pentax lenses?

As far as companies go, Samsung and Pentax would seem to correspond somewhat to the Japanese/Korean model we've observed in other industries. Many Honda automobile and motorcycle parts (only one of a dozen examples) have been manufactured in Korea since the early fifties, eventually resulting in all but paralleled R&D and manufacturing facilities emerging in Korea. Eventually this morped into mainland Korean brands of their own with quality and, arguably, pedigree, comparable to the Japanese designs that they now entered the market against. I expect that the situation with cameras is similar enough. Heck, the K-X is probably manufactured/assembled in China at this point. I don't know about the Samsung. My Samsung SL420 compact digital is made in China. Any year now the Hyundai, Kymco, Samsung, and LG equivalents will pop up out of China. IBM into Lenovo? No use keeping track anymore really.

Interesting as well is that I've been getting to know my SL420 now for about four months and while reading the reviews on the NX-10 the family resemblance seemed remarkable. Many familiar functions, icons, menus, features.
Forum: Pentax DSLR Discussion 02-25-2010, 08:58 AM  
White Pentax K-x
Posted By frascati
Replies: 23
Views: 6,389
Question about the colored K-Xs?

I am assuming that none of these are injection molded colors? It's paint on a black plastic shell?

I angrily rued the passing of the lightly pebbled basic dark grey plastic body just about every laptop computer came clad in til about five years ago. I still own an 'antique' Toshiba from 1999 that has seen some awe inspiring knocks and scuffles, overseas travel, bookbag combat, in car gps from coast to coast, etc.... and a quick wipe of windex and it STILL looks brand new. Seriously.

The first computer that I purchased subsequent to that one, about 2003, had silver painted trim around the lid and silver paint around the keyboard and on the palm rest. It looked like total hell within six months. I was irritated. The next laptop I purchased was, I made certain, pebbled dark gray/black. When I went shopping for my most recent laptop about two years ago, I was really , really frustrated by the lack of choice I reduced myself to in demanding an unpainted body. I had to stay basically within the 'business class' of laptops. I finally got an HP 'workstation'. It's a fine computer but upon closer examination (I purchased it online) they STILL found it necessary to paint the lid and the palm rests a dark silver!!!!!!!! I had unsightly wear and scores across the lid and on the edges (down to the black plastic) within a year.

For some silly reason I had not even thought about this experience while gazing so admiringly at all the K-X colors on the japanese webpage. When I was reading this thread it dawned on me. "What am I thinking?"

I'm not dismissing the painted bodies out of hand. I could stand on a street corner with a sandwich-board and proclaim "down with paint on laptops" and most people would ignore me or offer me change or spit on me. Paint is here to stay and most people, evidently, love it. Lots of folks change their laptops like a pair of jeans anyway, every six months, so what the hell. I'm just saying that it's probably something to consider for those of you looking at these cameras.

And if the plastic body is injection molded color. Then that's wonderful and none of this applies. Or if the paint is some carbon nanotube and ceramic amazement that takes all comers for years and comes out none the worse, then that's all good too.

But that IS a very, very, fine looking camera in white! And there's actually a good possibility that the white is indeed injection molded white plastic while the other colors are painted black bodies. Pentax may have anticipated the popularity of the white and dedicated a run for that body. Can anyone verify whether this is the case (so to speak)?
Forum: Pentax DSLR Discussion 02-22-2010, 11:32 AM  
Is the k-x mirror slap issue real?
Posted By frascati
Replies: 31
Views: 11,520
er1kksen I'm sincerely sorry if I offended you. I did not intend that. You were not the originator of this 'mirror slap' issue, but someone who has, fruitfully, taken it up and identified where there might be some concern (having little in fact to do with the physical issue of "slapping"). I hoped my 'idiot' comment was clearly aimed at the original source of complaint, the one who left it with this unfortunate naming. Sorry it came off wrong. The OP in this thread, and many others I'm sure, continue to be misled by the tag "mirror slap" here.

Would someone answer my question?

Is there anything at all hardware related going on here? And if not, can we stop calling it "mirror slap" for god's sake?
Forum: Pentax DSLR Discussion 02-22-2010, 08:55 AM  
Is the k-x mirror slap issue real?
Posted By frascati
Replies: 31
Views: 11,520
Real or imagined? Hardware, software, firmware related? Can we at minimum identify just what was being suggested by the OP who drew attention to it? I read the whole thread at dpreview and was still uncertain.

Mirror Slap as identified by the original poster on the K-X would seem pretty clearly to indicate a hardware anomaly that affects images. I was trying to understand if the original concern had something to do with the design of the mirror carriage, bad damping, proximity to the sensor, poor sensor mounting, etc. But the discussion on this matter as it affects the K-X has proceeded all over the map to include firmware issues and more. Mirror lockup has always been a feature used by photographers to isolate the mirror and prevent it from mechanically affecting the shot with vibration, slap, whatever you want to call it. So just what is being described in the original complaint that is uniquely bad on the K-X?

I'm new enough to photography (to digital anyway) that I'm learning new parlance every day, but is "mirror slap" understood to be more or less a feature of all DSLR cameras? It's there and some models deal with it 99 percent effectively and some do not? Does it follow that somebody got on a forum and suggested that the K-X is a poor performer in this category? From another thread at dpreview.com......




....and response



Less turdy tripods? Any amount of turdiness is going to blur an image. I mean, C'mon!


The story about mirror slap on the K-X is starting to sound like it may have begun with an idiot, full of sound and fury, signifying nothing.
Forum: Pentax DSLR Discussion 02-21-2010, 12:07 PM  
which K-x Colour you are?
Posted By frascati
Replies: 30
Views: 8,245
For those of you who are able, either living in Japan or through friends there, to order the wider variety of colors, are you also able to order with different lenses in the base/kit package? The Japanese webpage that allows you to mix/match colors and view the result also allows you to view it with a small selection of other lenses. I can't read the rest of the page, but these options might seem to suggest that one could select a body color, grip color, and lens, view the product, and then click a button for purchase. No?

Here's the page....

????????????PENTAX K-x ????????


And these are the lens 'options' that it presents.....

DA L 18-15mm F3.5-5.6
DA L 55-300mm F4-5.8ED
DA 40mm F2.8 Limited
FA 43mm F1.9 Limited


Sure can come up with some interesting combos!

Forum: Pentax DSLR Discussion 02-19-2010, 11:14 AM  
Is there anything to these K-X comparison shots?
Posted By frascati
Replies: 17
Views: 5,424
I'm the guy who was looking for a K-X kit with prime. I like meticulous methodical and patient photography. RAW sounds like a good fit for me then anyway. So here's a new part of the beginner's tutorial I'll have to bone up on. I'll head off to Googleland in a sec. But I'll ask here right off the bat since it's relevant to the thread and I'd like to know how it applies to the K-X specifically. Just skip anything too youthful, exuberant, or otherwise impertinant.

What are the pros and cons of shooting RAW with the K-X? Is this a good place to start? http://digital-photography-school.com/raw-vs-jpeg

Are there shooting situations that make it more or less advantageous considering the pros and cons? (i do understand that raw is a bigger file and may affect burst speed, memory space, etc.)

Is the NR on the K-X a discrete function? Turn it off or on when desired without affecting other processing? Is it something that can be 'tweaked' with improved firmware?

In shooting raw, is batch processing it on your laptop pretty much defeating the purpose? The firmware in the K-X for image processing is just being substituted by another software program of your choice, no? So you're generally going to shoot RAW intent on processing each image individually? Can you get improved/different firmware for the K-X if the original is not to your liking or found to be lacking?

And one more volley in the CMOS CCD debate (oh hell, he's gone too far)? Someone lost his K-X in a cab and discovered that he was happily reacquainted with the images from his older camera. Someone suggested that it was likely due to the fact that the other camera used a CCD sensor. This sounded very similar to comments one hears in hi-fidelity discussions when someone 'rediscovers' their old tubesets. Vacuum tubes (so the argument goes) introduce colorations that are more pleasing, though less comparatively accurate, than the cleaner signals through solid state components. Similarly between vinyl/analog and digital. Actually, since the CCD is outputting analog and the CMOS is outputting digital, the analogy between vinyl and digital CDs might be more appropriate. And likewise you hear people saying that analog is purer and more 'pleasing'. Digital adherants generally counter with the claim to accuracy. Any of that at all relevant to the CMOS vs CCD, K-X vs K100 question?

Is it possible that if 'noise' control is a very high priorty in your images that the CCD is advantageous enough (in 2010) to pass on the CMOS for a while when deciding on a new purchase? Is this really nitpicking? The original question in this thread seems to have touched some kind of nerve anyway.
Forum: Pentax DSLR Discussion 02-19-2010, 10:32 AM  
Left my K-x and FA 31 in the back of a cab...
Posted By frascati
Replies: 32
Views: 6,588
A couple of weeks ago there was a tiny little 45 second segment on a cab driver who returned 4500 dollars to a woman who left it in his cab. Turned out she was visiting from Italy there was a little difficulty tracking her down. The news crew had a brief shot of him walking down the sidewalk, hands in pockets, and smiling shyly at the camera... and then they went on to a five minute highlighting of some blitheringly inconsequential, plodding and jerkwater happenings at a local pottery guild. WHAT?????? I was so pissed.

I'm not generally disposed toward preachiness. But you ask about what kind of world we live in. When an opportunity like this is squandered... to interview, laud, idolize, hand the keys to the city to, this best example, this anti-Madoff, of humankind.... well, it's just a real shame.
Forum: Pentax DSLR Discussion 02-18-2010, 09:19 AM  
My k20d with Katzeye review (With Pictures!)
Posted By frascati
Replies: 142
Views: 74,127
I'm a new member here and taking advantage of that status, while it lasts, to ask the really stupid questions.

Someone pointed out on another forum thread discussing the Katzeye that it improved his photography for the following reason...
(might be hogwash or it might actually be interesting)
...The split prism ensures that the sensor is seeing the the properly focused image, not the image that your eye may have already slightly corrected for. My eyes are almost 50 yrs old, so this no longer applies. But I do recall my much younger eyes capable of focusing very precisely within a remarkable depth of field, especially when looking through binoculars or when looking at an object very close up. Now I have to hold an object an exact number of inches away from my face to see sharp detail, but was a time in my twenties when that range would be compensated for pretty reliably by the eye's "accomodation". You might have experienced it when 'hunting' for the right diopter adjustment on a pair of binoculars. Here's an interesting wiki article on the subject...

http://en.wikipedia.org/wiki/Accommodation_(eye)

So the reasoning, for a camera, suggests that it might be possible when using the eye's sense of acuity on a scene through the camera lens, that you eye has 'accomodated' a slightly out of focus image through the viewfinder, and when you snap the pic, the sensor recieves a very slightly out of focus image because it lacks the accomodating 'tweak' that the eye is capable of.

So, we presume, if this isn't entirely just utter hogwash, that a split prism image cannot fool the eye. It either is, or is not, precisely focused as the sensor is going to 'see' it.

What'ya think? Is Katzeye missing out on some really capital good advertising around this?


as a postscript.... google is all about asking the question properly. Once I actually googled a question with the words Katzeye and Accomodation I discovered plenty of discussion in scattered forums on the subject. It's interesting stuff.
Forum: Pentax DSLR Discussion 02-17-2010, 11:26 PM  
Is there anything to these K-X comparison shots?
Posted By frascati
Replies: 17
Views: 5,424
In the middle of this (link) page...
Pentax K-X - The Photo Forum - Photography Discussion Forum
.... are some comparison photos.

Valid? Too unscientific/uncontrolled? Any merit to the comment....


I'm kind of exhaustively checking out this camera's reputation before I commit. It's likely to be my one and only for a very long time.
Forum: Photographic Technique 02-17-2010, 11:55 AM  
Poll: Do you guys fire more often in autofocus or manual focus?
Posted By frascati
Replies: 77
Views: 13,212
Interesting. I read a criticism of the K-X is a lack of on screen AF indication. If I read it correctly that is. In any case, it's usefulness is debated when the subject comes up. But in any case, a replacement split screen focusing screen would seem to be a remedy?

postscript....

I was just googling information/comment on this topic and found one very intruiging post in another forum.
Someone suggested that his eye tends naturally to refocus within a certain range while setting up certain shots. Concerned that this might actually differ slightly from what the sensor itself was 'witnessing' he installed a split prism screen in order to eliminate that variable. The human eye does indeed correct within a certain range, but my eyes are almost 50 years old, so this wouldn't affect me anyway. But it's a very interesting question regarding how much you can trust your eye's interpretation of the actual focus registering on the sensor. Is this foolishness? Would you need a degree in physics, lens design, and opthamology to rationalize this?
Forum: Troubleshooting and Beginner Help 02-17-2010, 11:01 AM  
Detail and resolution from web photos.
Posted By frascati
Replies: 23
Views: 3,720
Funny. I was just over in the "kit lens club" going through the pages from the start and came across this



The retort there from Marc S himself. I copied the exchange and raced over here to post it and found Marc beat me to the space. Perhaps all of this is just the matter of a newbie overstating the obvious. In which case, I'm sorry if I overdid this. It's always difficult to balance too much with too little explanation and I might have been guilty of overstating things.
Forum: Photographic Technique 02-17-2010, 10:30 AM  
Poll: Do you guys fire more often in autofocus or manual focus?
Posted By frascati
Replies: 77
Views: 13,212
Is a replacement split prism focusing screen much of an advantage for manual focusing? I did not see much comment on it in this thread. Or is it just assumed that everyone is using one? I'm beginner level in DLSR.
Forum: Troubleshooting and Beginner Help 02-17-2010, 10:15 AM  
Detail and resolution from web photos.
Posted By frascati
Replies: 23
Views: 3,720
................................
Forum: Troubleshooting and Beginner Help 02-17-2010, 09:46 AM  
Detail and resolution from web photos.
Posted By frascati
Replies: 23
Views: 3,720
Is it me? Gooshin, are you deliberately trying to frustrate me? I stated, twice, with emphasis, that I'm not talking about having 8mp of information AVAILABLE TO ME!



I'm talking ONLY about viewing other's images on the web.

Stop mumbling into the air, put your espresso down for a sec, and just read the entire original question.
Forum: Troubleshooting and Beginner Help 02-17-2010, 09:21 AM  
Detail and resolution from web photos.
Posted By frascati
Replies: 23
Views: 3,720
I'm not asking about my own images. I'm specifically referring to other's images posted to the web.

You might still be misapprehending what I'm asking.
I probably am missing something fundamental here that is making my question unclear.
A 1.76 mp screen is what I have to view an image with on this laptop. So it cannot render detail beyond 1.76 megapixels. Correct?

Never mind sharpness. I think i understand correctly that it is indeed a separate measure than resolution. Even low resolution images can be rendered more or less 'sharp'. I'm talking about detail. Whether or not the fine print on an image or a single hair on an animal is visible or not as a direct consequence of how many pixels are available either in the image or when reproducing it on screen.

8mp of info in an image is higher resolution that 2mp. More mp is better right? So in a side by side comparison, same lens, same setup, etc, of an image of a (distant) eye chart, the 8mp image is going to provide a resolution that renders more of the lines readable. Stop me where I'm wrong here (but don't get exasperated). But for the purposes of viewing both of these images and comparing them on a 1.76 megapixel computer screen, it is not possible to distinguish the superior 8mp detail/resolution. No?

I'm not talking about viewing my own images where I obviously have all the data available to feed the screen at any zoom/crop level. I'm talking specifically about the images that others provide via the web for purposes of comparative quality of detail. I know image compression methods can complicate this, and may potentially make the 8mp image worse due to an inferior compression method than the 2mp version rendered at 600x800 (for instance). But when both of these images are on my screen I don't think it's usually the case that I can continue to zoom on the "better" quality image to access it's superior level of information (detail). When I resize images appropriately for the web they are generally something like 600 x 800 or similar. That's all the information I've provided others have to judge it by.

I don't see how I'm overcomplicating this. Isn't it a very straightforward question?
To the point... someone puts up an image in a forum and says look at the fantastic detail and clarity (disregarding color, brightness, etc) of this shot. Generally they are saying look at the precision at which this lens was able to deliver the image to my 12mp sensor. But any of that fantastic precison that I'm trying to judge this lens upon is lost in translation to my 2mp computer screen. No?
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