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Forum: Lens Clubs 04-24-2021, 05:36 PM  
Fisheye Fever Club -- Flaunt your fisheye photos!
Posted By dms
Replies: 3,787
Views: 680,914
If you have not seen what fisheye hemi software can do, I took the liberty of applying it to your image (and a minor perspective control).

I thought it would be interesting to show the Fish-eye hemi correction w/o the PC adjustments (the Perspective Control adjustment was done only because the camera was not level). I think you can see the fisheye hemi loses none of the original image, or any none that I noticed.
Forum: Troubleshooting and Beginner Help 04-16-2021, 05:28 PM  
Vintage filters
Posted By dms
Replies: 17
Views: 691
Often the circular filter is then put in a square frame (as you have). Also circular filters may be inserted in the rear of the holder, such as the standard PL (not for example the yellow-blue PL)-, but these are in a much thicker sort of toothed circular holder. And, although none of the ones you show are it, there are Cokin A size--the smallest, and two I believe larger than the P size that you have.

Actually the circular one with the smaller OD may be a Cokin A size, to be inserted into the Cokin A size frame, and then inserted into the A size holder. I don't recognize it, but I only use/know the graduated NDs, PLs, and color conversion filters.
Forum: Digital Processing, Software, and Printing 04-08-2021, 05:14 PM  
Tricks to reduce cost of ownership of inkjet printers?
Posted By dms
Replies: 39
Views: 1,754
I do a print test every two weeks (a print test page, uses almost no ink).
Forum: Pentax Camera and Field Accessories 04-08-2021, 08:33 PM  
Landscape Tripod
Posted By dms
Replies: 12
Views: 897
I like the older Tiltall tripod--I have the star D version, the Marchioni version was the original (believe all were gold in color), the star D was about the same time and is the same except mine is black, then Leitz marketed it, and then/now is made in China and not the same quality.

Used likely $50-100 plus another $30-50 for QR.

Comes with three way head that nicely takes a circular QR clamp/plate-- (I like Sunwayfoto DDY-64iL).

Quite sturdy and robust but weighs about 6.5 lb. Even w/o extending the center post it comes to my eye level and I am 5 ft-11 in.
Not sure why you want ball head for panorama, I find it easier to get level with 3 way head. Anyway it comes w/ head and not easily removed.
Forum: Pentax SLR Lens Discussion 03-27-2021, 11:44 AM  
Macro advice
Posted By dms
Replies: 15
Views: 856
I would suggest a zoom w/ macro capability. The ultimate image quality is in principal less, but the zoom ability allows you to adjust image magnification w/o moving the camera (w/o other equipment)--this is a huge benefit in the field. Something like the Adaptall-2 35-80mm SP (01A) lens. Just take care because lots of zooms say macro capability but in fact are terrible. You can add extension rings, or teleconverter to get more magnification (I think it is a toss up--unless you want more working distance--then the latter). This lens is excellent except it flares badly (light sources will doubly appear)** but not likely an issue for macro.
** For me for theatre work it is unusable.
Forum: Pentax Compact Cameras 03-15-2021, 02:48 PM  
Tough compact camera for the mountains.
Posted By dms
Replies: 16
Views: 1,278
Seems like buying any camera based on other than your own or a trusted like minded friend's experience comes with greater risk than another GR. You like it and it gave 5 years use under trying conditions. I would think another GR is indicated. A new GR model also poses a risk, but maybe acceptable.
Forum: Pentax Compact Cameras 03-03-2021, 04:53 PM  
Verdicts on undiscovered film P&S Pentax
Posted By dms
Replies: 29
Views: 1,537
If you are considering the Nikonos, then I suggest the Nikonos III. Totally manual, but super fast to advance film, build is beautiful. And the 35mm amphibious lens is quite good--although it flares easily. I use a 58-49mm step down ring plus a filter ring w/ glass removed and mount the Takumar 28mm square hood, effective and hardly cuts into the huge viewfinder. This was often my Europe travel camera. Also was/is my canoe trip/foul weather camera. I also recently got the 80mm telephoto but cannot yet comment on it.
Forum: Pentax DSLR Discussion 02-28-2021, 01:16 PM  
Thinking of reacquiring a K-x...
Posted By dms
Replies: 33
Views: 1,212
The k-x is a fine camera, and I believe the k-r is basically the same, except you can see the AF sensors, but it does not take AA batteries. For me AA lithium are great--they last forever, and if I need them for my GPS when backpacking I can take them from the camera. Suggest you get it thru KEH, B&H, etc. so you can check it out on receipt and return if need be w/o hassle. If t works it should last and serve you well, and you have not sunk a bunch of money into it.
I personally don't want the accelerator/too much messing w/ my file data, and given that--I happen to think there is virtually no difference in IQ between my K-5, K-x, K-S2 and Nikon D700. And I don't need more than 10mp. Of them I probably am least enamored w/ the K-S2.

BTW the K-10D (I have the identical body K-20D) is a much larger camera, and for me is much more dated--anyway it feels very large--and [the K-20D] is inferior to the K-x image wise. Cannot speak to the older sensor CMOS vs CCD.
Forum: Pentax Camera and Field Accessories 02-25-2021, 02:33 AM  
Rough country tripod
Posted By dms
Replies: 23
Views: 1,549
Benro and Benbo are not the same. Benro came much later and I wonder if they purposely chose a name to confuse.
Forum: Pentax DSLR Discussion 02-26-2021, 04:49 PM  
Thinking of reacquiring a K-x...
Posted By dms
Replies: 33
Views: 1,212
I don't believe the k-x/k-r has the bad solenoid. The k-x with litium batteries lasts forever, and is quite light. I also think the images are good and 10 mp is usually plenty.
I used two k-x and two K-5 for theatre photography (which has been on hold for a year) for close to a decade, and consider them close in IQ. I only recently retired the two K-x's in favor of two D700s.

I also have a KS -2 and I think it and the k-x are comparable. Somehow I don't care for the feel of the KS-2, but the flip out screen is nice, but you are taking a risk ** with it and the solenoid issue. At the price of the K-x/K-r I would think it a good deal. I just started my niece (back onto digital) w/ a red K-x and FA 28-70mm f/4 lens.
** But there is a risk w/ the K-x/K-r that the control dial may start to skip settings as you turn it. Just make sure it is OK when you get it and hope it does not happen later. Camera is still fine, just need to turn dial again to get the aperture or shutter speed you wanted.
Forum: Photographic Industry and Professionals 02-24-2021, 03:18 PM  
Decoding camera industry trends
Posted By dms
Replies: 31
Views: 1,702
Well do you see a global economy as a single or a few average consumer profiles, or do we have so many individuals that marketers can reach--in which case producers of niche products can do much better in reaching customers--so long as the don't aspire to be major players. I actually think the latter is happening a lot and is quite exciting for photography now.

Sorry, just saw photoptimist had made exactly this point.
Forum: Pentax Mirrorless Cameras 01-22-2021, 02:12 PM  
Pentax Q, Q-7 vs. Auto 110 vs. 110 Instamatic size comparison
Posted By dms
Replies: 9
Views: 1,131
Actually I find the #3 fish eye and #4 toy 35mm equivalent to be my favorites, and the 35mm equivalent my most used Q lens, and maybe the most used lens of the 60 or so Pentax and Nikon lenses I have. A Q, a 35mm optical finder, and the #4 35m equivalent lens is almost always in a jacket pocket in the city, and back packing and canoe trips--if I am ultra light.

---------- Post added 01-22-21 at 02:29 PM ----------

Here is an example with the Q #4 lens

Forum: Pentax Camera and Field Accessories 02-12-2021, 04:13 PM  
Rough country tripod
Posted By dms
Replies: 23
Views: 1,549
I have not needed it but the discontinued Benbo tripod is what I would use in your scenario. (I just take a table top tripod.) Benbo had two sizes (smaller for 35mm ) and two or three heights.
Forum: Pentax DSLR Discussion 02-15-2021, 01:20 PM  
Secondary travel camera, advice needed
Posted By dms
Replies: 40
Views: 2,266
Looking at options *ist may be good: cheap, very small, has AF, and works w/ most contemporary lenses (apparently not w/ aperture ring).
My film cameras are not likely candidates (MZ-S, K1000 and Spotmatics)--although MZ-S (if you decide you like film) is AF and quite nice and different.
Forum: Pentax DSLR Discussion 02-14-2021, 05:13 PM  
Secondary travel camera, advice needed
Posted By dms
Replies: 40
Views: 2,266
One of the light weight Pentax 35mm film cameras.
Forum: General Photography 02-12-2021, 04:34 PM  
Is there a name for perspective of extreme wide angle rectilinear lens
Posted By dms
Replies: 10
Views: 660
If you want to take very wide angle images and avoid the "distortion," a fisheye lens de-fished with fisheye hemi will correct for it. But anyway we really should not be calling it distortion. It's a natural effect of mapping objects from a wide plane onto the parallel sensor plane--as those near the edge are much further away.
Forum: Ricoh GR 02-05-2021, 12:27 AM  
Anyone views on GV-2 viewfinder?
Posted By dms
Replies: 10
Views: 672
I have not tried it but it appears to have a magnification of 0.5 which is good for 28mm optical finder.
-- I use them a lot with my Q and Kodak Retina (no rangefinder), and usually w/ zone focus.
-- And on my dslr's when photographing theatre productions, as it is fast, bright, and lets me see what is about to enter the frame.
-- For street shooting they are great, no problem in sunlight and always on, but if wider aperture you need to be able to judge distance if you don't have a rangefinder or its not a slr.
I have FF equivalent: 35mm, 40mm, and 50mm ones, and am currently looking for two others, so obviously I like them a lot.

About glasses, I don't know as have not used that one, but I wear glasses and depending on the eye relief I may not wear them. I found w/ the 35mm and 40mm finder glasses were OK, and w/ my 50mm I take my glasses of. Actually since you are not focussing w/o glasses and blurry is not bad--helps in some ways.

But you likely can look for Voigtlander 28mm (look at Camerquest) to see what the spec's are and wait till you see a good price. Used I have gotten them for less that $100, new they are about $200.

BTW vis-a-vis reading glasses, you are looking at infinity basically so you may not wear the glasses.
Forum: Troubleshooting and Beginner Help 02-02-2021, 05:09 PM  
Time for a new camera? or lens?
Posted By dms
Replies: 16
Views: 1,183
RE: comments on upgrading camera and my experience.
-- I used two K-x and two K-5 for theatre photography for maybe a decade, and the K-x (and thus K-r) and k-5 are quite close in sensor performance. Close in sensor mp, both can do 13"x19" fine. For that I don't think an upgrade does much.
-- The K-5 is superb in controls and build quality, the K-x/K-r not very good.
-- Never did AF w/ the K-x and hardly ever with the K-5. Except for static images I doubt either are very usable. (For that I use something else than Pentax.)**

** To be fair, the AF ability may be much better with the later K-5 models, and then K-3. There you need others' experience.
Forum: Digital Processing, Software, and Printing 01-15-2021, 10:25 PM  
Do I sharpen files for Epson wide format printer?
Posted By dms
Replies: 17
Views: 1,082
Epson is best to use 180 dpi, 240 dpi, 360 dpi, etc. not 300 dpi.

---------- Post added 01-15-21 at 10:34 PM ----------

Not everyone agrees that sharpening is a good thing. I don't usually sharpen for prints, except when the resolution is pretty low--e.g., cropped a lot. In any event better to sharpen less than to over do it and have halo's.
Forum: Repairs and Warranty Service 01-28-2021, 10:26 PM  
Posted By dms
Replies: 11
Views: 1,106
Seems like a new KP and keep the old one makes sense. Worst case if the new one breaks you have parts for the old one, or vice versa.
Forum: General Photography 12-17-2020, 12:14 AM  
Cameras You Love So Much That One Copy Is Just Not Enough
Posted By dms
Replies: 43
Views: 1,572
film: 2 Spotmatics;
2 K-x,
2 Q (actually 3, don't recall how that happened),
2 K-5,
2 Nikon D700
Mostly (except for Q's and spottys) I have two because I use them for theatre photography so I can choose the lens (already mounted) I want quickly, and in theatre/with audience I want to know where everything is w/o commotion, low light, etc. Actually I should instead have 4 of each as I use 4 cameras in a large bag--so I can choose from fisheye to telephoto, but that is too much to buy--instead I upgrade two at a time.
Forum: Digital Processing, Software, and Printing 11-24-2020, 03:21 AM  
Lightroom vs. Topaz AI Sharpen Comparison Photos
Posted By dms
Replies: 61
Views: 4,090
While I use AI sharpen a lot—as I mentioned I do ** theatre (plays, dance, etc.) photography and motion blur is often a problem. As discussed/the example shown, you really need to look very carefully at the sharpened result to be sure it did not change/add stuff that you don’t want. As I mentioned before it put 6 toes on a foot.

The problem is while I often like the results I have real misgivings about the idea that it is changing the content. I guess I have not come to terms with this technology: the approach and direction it is taking. Not a moral dilemma, but it almost feels like one.

** Rather I did, until we have a vaccine!
Forum: Pentax SLR Lens Discussion 11-16-2020, 12:25 PM  
100mm macro (1:1) vs 50mm macro (1:1) Depth of view question
Posted By dms
Replies: 22
Views: 1,357
As mentioned the perspective (relative size of nearer-to-farther away) changes, but the DOF is only a function of f-stop and magnifcation. There is a benefit of having more or less working distance (flowers and books: lesser FL is often better; skittish insects: longer FL usually), but whatever distance is required to get the desired magnification, will yield the same DOF.
Forum: Troubleshooting and Beginner Help 10-26-2020, 07:08 PM  
Stupid question #3: Sunsets
Posted By dms
Replies: 20
Views: 1,492
The photo of the sunset with geese shows the problem that the DR is too large for the sensor and the exposure was set by the camera, which tried to make the geese and lower part of sky a midtone. But as the sunset is the subject of the image you must take a proper exposure reading, or look at the camera result and put in several stops lower ev and retake the image. Then the geese and any foreground if present will be in silhouette. It is ultimately about technique--about learning more about exposure and not letting the camera make all the decisions.
Forum: Pentax K-70 10-23-2020, 01:37 PM  
Highlights Blowing Out?
Posted By dms
Replies: 31
Views: 2,087
With experience one recognizes when the exposure system will likely overexpose and we input an exposure compensation.**

But the more direct way is spot meter the brightest area and the set the exposure so it is OK--e.g., measure the brightest area and use an exposure level about 3 stops more exposure (you can fine tune this from results). But sometimes (e.g., reflected sunlight of water, etc.) we must ignore some areas--basically measure the brightest area we want to see some detail.

Oh--stevebrot discussed this also.

Also, use of raw in pp, can allow up to/about 1 stop overexposure to be fixed, often w/ good color accuracy.
** BTW this is an area where the system that is supposed to fix it (Matrix metering) can be a problem as it has an incomplete/unclear set of rules, and it is hard to 2nd guess when and by how much. For this reason some of us don't use matrix metering, or don't use it when it was designed to be used.
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