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Pentax K-1 images
  
 
wsu6
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p.40 #1 · p.40 #1 · Pentax K-1 images


Thank you, Teiki arii.

-Bill



Mar 08, 2017 at 01:25 AM
pinholecam
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p.40 #2 · p.40 #2 · Pentax K-1 images


Now... this problem should present itself on pixel shifted images independent of the software used.
In this case, the good thing is that Raw Therapee allows the viewing of the mask used on the image and we can check what has been determined as using only the first image.



Pixel Shift over masked due to changing light by jenkwang, on Flickr

This is a window light shot on a windy and cloudy day, the light levels changed a lot when I did the shot, initially from bright sunlight to dull light by the time I got and setup the camera for the shot.
My first suspicion of why it happened was that the light levels changed.


Thanks to [B]heckflosse[/B] on Pentax Forums and part of the RT team, who gave the following information to check what went wrong and a solution.



RT-pixel shift tab 1 -circled by jenkwang, on Flickr

To look over each frame of the pixel shift and check, do the following :
1. Switch to Amaze (circled orange)
2. Set profile to "Neutral" - this removes any auto brightness for the image

Now look over the image to check them for differences in light levels (the histogram can also provide a good indicator)



So in this case, there was indeed a change in light levels between frames.
Frames 1,2 were about the same and 3,4 where different from the two, but similar in exposure between themselves.
With this, I realized that it was indeed the fast moving clouds moved across the Sun that fluctuated the light levels between frames. (I had though the 4 frames would be fast enough to not have it register on the images)


Heckflosse was able to equalize the exposure of the frames and here is before/after masking results :

ps_flash_motionmask by jenkwang, on Flickr


I'd assume the "exposure equalization" option will be available in a later build of RT. (the have daily builds AFAIK).



Mar 09, 2017 at 12:05 AM
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p.40 #3 · p.40 #3 · Pentax K-1 images



20170311-IMGP7239 by jenkwang, on Flickr
K1+Samyang 14/2.8



Mar 12, 2017 at 01:43 AM
teiki arii
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p.40 #4 · p.40 #4 · Pentax K-1 images


Hi,
I bought some days ago the non-Apo Elmarit-R 180/2.8 ver. II to fit with my Leica Apo-Extender-1.4x to make a "light" combo 250/4, a lighter solution than my Apo-Telyt-R modular 280/2.8. I didn't want to change Leica mount for Leitax for this reason. It is not a Walter Mandler design, nor an Apo version, but a good combo thanks to MacOs RawTherapee 5.0...


Out of order. Leica-R combo 250/4 on Pentax K-1, RT Process.



Mar 12, 2017 at 07:49 AM
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p.40 #5 · p.40 #5 · Pentax K-1 images



20170211-IMGP6973-1 by jenkwang, on Flickr
K1+Samyang 14/2.8



Mar 14, 2017 at 11:28 AM
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p.40 #6 · p.40 #6 · Pentax K-1 images



20170313-IMGP7398 by jenkwang, on Flickr
K1+Samyang 14/2.8


This time, using a dual program workflow to get the best out of both programs.
RT for the pixel shift processing into a TIFF and then using Lightroom for the better highlight/shadow recovery and brush tools.

I think I like this scheme enough that I'll use it more often.
The learning just does not end.
I had thought a TIFF workflow would never be part of what I do, but after trying it out, I do think it works well and the pixel shift files justifies the workflow for me.




Full size file available here as usual for my pixel shift exploration.
Its "4 clicks" of the "+" sign to get to 100% (or click all the way in, then back out by 1 click)
https://drive.google.com/open?id=0B6LPWv_uvvjpTkdtVUl2Q2pZZUk






Mar 16, 2017 at 02:08 PM
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p.40 #7 · p.40 #7 · Pentax K-1 images


I've not taken macro for a long time.



IMGP7634 by jenkwang, on Flickr

K1+Kiron 28/2 on reverse adapter (that comes with the lens)
Stack of 3 frames
Very strongly cropped.



Mar 18, 2017 at 05:21 AM
 

Search in Used Dept. 



teiki arii
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p.40 #8 · p.40 #8 · Pentax K-1 images



Leica Macro-Elmarit-R 60/2.8 on Pentax K-1, Pixel Shift on MacOs RawTherapee.



Mar 20, 2017 at 01:48 PM
sas8888
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p.40 #9 · p.40 #9 · Pentax K-1 images


K1+31ltda
R/T for Pixel Shift output Tiff then processed in C1
Southampton, Uk




Mar 21, 2017 at 10:36 PM
teiki arii
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p.40 #10 · p.40 #10 · Pentax K-1 images


New release for MacOs Pixel Shift RawTherapee..
https://discuss.pixls.us/t/support-for-pentax-pixel-shift-files-3489/2560/288?u=teiki



Mar 22, 2017 at 10:02 AM
sculptormic
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p.40 #11 · p.40 #11 · Pentax K-1 images


Amsterdam
Window dressing # 323
K1-Zeiss25/2.8





Mar 23, 2017 at 12:39 PM
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p.40 #12 · p.40 #12 · Pentax K-1 images



20170313-IMGP7374 by jenkwang, on Flickr
K1+Samyang 14/2.8



Mar 23, 2017 at 01:56 PM
teiki arii
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p.40 #13 · p.40 #13 · Pentax K-1 images


Hello,


Marie, Leica Apo-90/2 Asph. Pixel Shift on MacOs RawTherapee.



Mar 23, 2017 at 07:03 PM
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p.40 #14 · p.40 #14 · Pentax K-1 images


On a Dangerous outing....

K1+FA43ltd

20170313-IMGP7486 by jenkwang, on Flickr




20170313-IMGP7536 by jenkwang, on Flickr



20170313-IMGP7492 by jenkwang, on Flickr



Mar 27, 2017 at 06:25 AM
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