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Forum: Troubleshooting and Beginner Help 12-15-2018, 01:36 AM  
which teleconverter to use?
Posted By automorphism
Replies: 28
Views: 1,130
It's not worth it to get a teleconverter for your lens. Cropping will always yield better quality. Even if there are more pixels on your subject, the pixel-level quality will be much worse and will negate the reach of the TC. Not only that but the autofocus will suffer and the lower-light capability will be worse.
Forum: Digital Processing, Software, and Printing 11-11-2018, 06:07 PM  
Setting up HDD for reliable read/write access from both Windows 10 and Ubuntu / Mint?
Posted By automorphism
Replies: 24
Views: 839
I'd just go with NTFS. The FAT filesystem is annoying. It supports case-sensitive labels, but the filenames are case insensitive as identifiers, which mean you can still use upper and lower case in naming but if you want to rename a file by changing a lower to an upper case letter, that won't work. The FAT filesystem would only be a good idea if you really need out of the box support on OS X. NTFS has better error recovery because even the NTFS-3G has partial journaling support.
Forum: Photographic Industry and Professionals 11-08-2018, 09:25 PM  
Canon starting to butcher Sony in FF mirrorless (as predicted)
Posted By automorphism
Replies: 54
Views: 2,709
Sony could be selling more mirrorless cameras than ever and their percentage marketshare would still go down simply because there are other brands being sold. There are huge numbers of Canon and Nikon users (the majority of ILC cameras out today) that are trying out their brand's mirrorless offering.
Forum: Pentax DSLR Discussion 11-02-2018, 08:52 PM  
Hedging your bets, or how do I not stress about buying Pentax lenses?
Posted By automorphism
Replies: 35
Views: 1,620
I think you should just get a camera to take pictures, and not as something to sell later. That being said, if you're thinking about other systems why not just have an open mind and try some new models at your local camera store? Personally, I don't believe in loyalty to any brand, but if you want to own the DA limiteds, just buy them.

As for myself, I have some Pentax gear and I plan on using it until it dies. Some of my lenses do have aperture rings, and I will just adapt those once my bodies stop working. I am also in the market for a few new lenses for specific purposes however, and for those I'm actually looking at other systems. However, the main reason for that is because of the capabilities of other systems/lenses that aren't available for Pentax.

For the purposes of photography, I don't think you should let the future worry you.
Forum: General Photography 10-30-2018, 10:45 AM  
E-Bay is weird
Posted By automorphism
Replies: 28
Views: 1,963
Haha, yes I think some of those old film cameras look very elegant, and moreover have that well-constructed feel that seems lacking on many modern products.
Forum: General Photography 10-30-2018, 09:31 AM  
E-Bay is weird
Posted By automorphism
Replies: 28
Views: 1,963
Also, I didn't realize the second one came with a spotmatic. That may be another reason why it was cheaper. I noticed in the past that spotmatics with fast fifties sometimes go a little cheaper than the fast fifties by themselves. I think part of the reason is that most people don't want the spotmatics and that the cheaper price basically is a price the seller 'pays' to dispose of the film camera body. I have avoided lens/body combinations myself because of the extra effort required to figure out what to do with the body.
Forum: Pentax SLR Lens Discussion 10-29-2018, 09:22 PM  
Left lenses in basement for two day-what should I do
Posted By automorphism
Replies: 18
Views: 1,764
What you really have to watch out for is temperature fluctuations, and the gear being exposed to rapid changing temperatures. That's why leaving lenses in your car is much worse than leaving them in a basement. In a bag in a basement, the temperature and humidity levels would change very slowly so there is not much to worry about.
Forum: General Photography 10-29-2018, 09:19 PM  
E-Bay is weird
Posted By automorphism
Replies: 28
Views: 1,963
Doesn't sound weird to me. There aren't many people bidding for these items and they're located in many different countries so you'd expect a lot of price fluctuation.
Forum: Flashes, Lighting, and Studio 10-29-2018, 09:16 PM  
Cheap easy flash trigger
Posted By automorphism
Replies: 14
Views: 1,254
Thanks for pointing that out. That's definitely a pretty unbeatable system for the price.
Forum: Pentax Q 10-29-2018, 02:16 PM  
12 hour night-sky timelapse
Posted By automorphism
Replies: 18
Views: 1,661
Pretty cool! Nicely done.
Forum: Pentax K-1 10-29-2018, 03:39 AM  
Sensor cleaning - what do you use?
Posted By automorphism
Replies: 14
Views: 1,043
I use a bulb blower. It works on almost all dust spots for me. When I had quite a few spots years ago on my K-50, I tried the in-built sensor cleaning function. It got rid of none of them. For me, it was useless.
Forum: Flashes, Lighting, and Studio 10-28-2018, 02:36 PM  
Cheap easy flash trigger
Posted By automorphism
Replies: 14
Views: 1,254
I suggest just getting a second flash like the Godox TT560 II for $50. It comes with a wireless trigger (battery can be replaced, as I learned from a forum member here). This way the Godox can trigger your Pentax optically. If you want to do portraits with a shoot-through umbrella, you're going to want a second flash. That's because you're going to get some shadows on the face and with a second flash you can easily fill them if you want, do a hairlight, or light up the background as well.
Forum: General Photography 10-28-2018, 08:52 AM  
Why Mastering Photography Takes Time
Posted By automorphism
Replies: 16
Views: 1,168
Personally, I've found that it helps to give myself a time limit going through shots and give star ratings. For images sequences of similar subjects, I make the rule that I only give one out of every two images a 2-star rating.

Then I filter out all one star images, and give one out of every two images a 3-star rating, etc. By the time I get to 4-stars, only 1 in 2^3=8 images are left, so even in a sequence of 200 images (say taken on a full day of nature hiking) there are only 25 left.

I've found that it takes only five minutes at most to go through such a process with around 200 images, so it's pretty quick because your mind should be pretty good at deciding amongst which two are better.
Forum: Sold Items 10-26-2018, 05:37 PM  
Wanted - Acquired: AA Battery adapter for K-50
Posted By automorphism
Replies: 3
Views: 192
I bought the brand name one on B&H, and have been using it constantly for 2.5 years and nearly 10K shots. It works, but it is a little expensive for what it is.
Forum: Pentax DSLR Discussion 10-25-2018, 11:10 AM  
The End of the DSLR?
Posted By automorphism
Replies: 255
Views: 12,199
This is an excellent point, and I do this all the time. In fact, wildlife/nature and astro- photographers are probably going to be some of the last groups to go mirrorless.
Forum: Post Your Photos! 10-25-2018, 11:01 AM  
People Corporate Headshot
Posted By automorphism
Replies: 6
Views: 385
Pretty decent portrait! My only suggestion is that the face could be a little brighter, about 0.14ev.

If you use darktable, you can also achieve the same boost by using the colour zones module for better rendition of skin tones. lift Factor 0.028, Gamma -0.088, and gain factor 0.119 achieves something similar.
Forum: General Photography 10-25-2018, 10:45 AM  
The Future of Photography is Code
Posted By automorphism
Replies: 68
Views: 2,761
Computational photography isn't really about smartphones, even though the technology right now is only in smartphones.

It's actually about computational photography in general and how it will change even ILCs. Future mirrorless cameras with advanced software for example will be able to take ultra clean, sharp shots in low light with budget lenses. I wouldn't be surprised if Sony integrates a direct HDR raw feature in the next few years that will give more like 16-17 stops of dynamic range. Sony is already working on smarter autofocus technologies like Eye-AF for animals. Traditional IBIS systems by moving the sensor will be augmented with machine-learning software solutions. I think noise-removing algorithms will achieve a big boost by selective smoothing.

Camera companies are slow to do this because most of them have a long history of hardware expertise but little software expertise. However, such software would make formats like micro 4/3rds more competitive with larger sensors, while still being cheaper. It's also true that for many applications larger sensor cameras don't really need software enhancements for most type of photography.
Forum: Digital Processing, Software, and Printing 10-24-2018, 03:35 PM  
The Darktable Users Coterie
Posted By automorphism
Replies: 51
Views: 2,598
That's weird. Did you try looking at the EXIF information of the JPEG? I just tried that and the lens info is definitely recorded in the EXIF of the darktable export. I don't have a Flicker account so I can't try and upload it.

Is it possible that you're using a manual lens that doesn't record the relevant data and that darktable is just recognizing a preset?
Forum: Pentax DSLR Discussion 10-24-2018, 03:25 PM  
The End of the DSLR?
Posted By automorphism
Replies: 255
Views: 12,199
Primes still offer advantages over zooms (either higher IQ or lighter). Black and white offers something different than color (emphasis on texture without the distraction of colour). Different sensor sizes offer compromises between IQ, pixel density, and price.

On the other hand, digital has meant the virtual end of film. Sure people still shoot it, but for practical purposes film is niche and used by very few. Digital is superior in every way for most people. I think something similar will happen with the DSLR. Mirrorless is superior in every way for most people.

Does the DSLR have advantages? Sure, right now. Native supertelephotos, for one. That will certainly change. EVFs will get so good that all but a tiny minority will prefer OVFs. EVFs are already pretty great. There are more rugged FF flagships like the K1, D850, and 5dIV, though I suspect the successor to the Sony A9 will solve that.

Maybe I'm wrong, but I think in 5 years very few new DSLR cameras will be released. I wouldn't be surprised if Ricoh was one of the last holdouts. But we're only upset because we have a choice.

Some day when I wake up in the future I might be using a mirrorless camera. It won't be today but I'm sure it will be soon. Hey! I'm fine with that. All these current high-end cameras are pretty darn great. If I have to use one, I won't be complaining -- I'll be out there taking pictures as always!

-Signed happy DSLR user
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 10-23-2018, 11:17 AM  
$48K and it is used for
Posted By automorphism
Replies: 25
Views: 812
I suppose one use case is massive prints. However, in this day and age there are still lower-cost options to do that. The upcoming Fuji 100mp MF camera will probably not be 48K.
Forum: Pentax DSLR Discussion 10-21-2018, 02:13 PM  
The Good - The Bad and The Ugly about Pentax
Posted By automorphism
Replies: 41
Views: 2,192
More cameras using DNG would mean less time programmers need to spend adding support for additional Raw formats. That in turn leads to higher quality software and more time for other, cooler stuff. Might not matter to you now in the present, but it makes a difference.
Forum: Pentax DSLR Discussion 10-21-2018, 01:01 PM  
The Good - The Bad and The Ugly about Pentax
Posted By automorphism
Replies: 41
Views: 2,192
Something that wasn't mentioned in this thread and I forgot myself is that Pentax has the option of DNG Raws. Wish everyone did that! In this day and age, having a proprietary Raw format seems ridiculous, as camera manufacturers generally don't make money off any Raw software (with a few exceptions).
Forum: Pentax SLR Lens Discussion 10-21-2018, 10:26 AM  
Accurate AF Lenses?
Posted By automorphism
Replies: 35
Views: 1,471
The AF speed is definitely dependent on the AF method of the lens. Newer lenses with a built-in motor will be better at driving the lens elements. That in particular contributes to the speed of locking on to a fixed target. But then there is also the tracking algorithm for AF-C, which is dependent on the algorithms programmed inside the camera. In this regard Pentax lags behind. Basically, overall AF performance is proportional to both the body software and lens AF motor (or with screwdrive, how well screwdrive can drive the lens).
Forum: General Photography 10-21-2018, 10:16 AM  
Yashica Y35 - a scam
Posted By automorphism
Replies: 5
Views: 881
Yes, it's hard to believe anyone would fund this junk. Then again, people fall for herbal remedies all the time....
Forum: Digital Processing, Software, and Printing 10-19-2018, 09:47 PM  
The Darktable Users Coterie
Posted By automorphism
Replies: 51
Views: 2,598
Not sure if you tried this but you could try creating a parametric mask for the colour green (or perhaps a parametric mask for luminosity values). Out of focus green is good at showing noise. If you can get the background selected with the mask in the equalizer module, you can use the bottom part of the equalizer curve to smooth the background more effectively than some of the denoise modules.

Also, as for the otter-like creature (is that an otter?), you can use the colour zones module to darken the green a small amount. Sometimes when you boost exposure or lift shadows, green can get too light and you can counteract that with the colour zones-> lightness feature.

---------- Post added 10-19-18 at 09:50 PM ----------



No, not in the same way as Lightroom. Darktable has limited asset management compared to Lightroom. Darktable can search through all the shots you've opened with it based on focal length, camera type, aperture, etc. but it quite different than Lightroom. It is mainly a Raw editor.


With darktable, you need to use a separate organizing program like Digikam or something else and it helps if you keep your pictures nicely organized with a good folder structure.
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