All Forum Comments
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 21:56
JAK wrote:
I've just converted my pixel-shift test image using ....
Thanks for doing this.. I think that I need to go and sit in a darkened room for a while now.I've just converted my pixel-shift test image using ....
Is it possible for you to try a conversion in latest version of PDCU (just released) and see if it allows MC on the image?
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 18:31
McGregNi wrote:
I would be very surprised if a third party software product implemented such a camera-specific feature ....
Well, from what I understand, MC just involves scanning all 4 images and, where there is evidence of motion between images, using pixels from just 1 image. ACR could do it, my question is, does it.I would be very surprised if a third party software product implemented such a camera-specific feature ....
What may illuminate this somewhat would be to see if the latest version of PDCU offers MC to PS images from a K3II. Can somone point me at a K3II PS image to try this. The K3II obviously can't do it in-camera without new firmware.
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 15:35
RobL wrote:
I experimented with a pixel shift image in RAW with movement control, and the four images were automatically combined in camera to produce a single RAW file of almost 200 Mb! I guess that you then process this image as normal. Compared to a normal exposure of the same view there was additional sharpness where the shot was in focus, but I hadn't used the timer or remote cable as is recommended so it could have been better.
Obviously the 4 PS images are combined in-camera when shooting JPGs (and possibly to produce the embedded JPG in a RAW file) but I suspect that the large (160+Mb) RAW files are effectively just the 4 separate RAW images in one file, which allows combination in post. Thus PDCU can derive MC and non-MC images from the same RAW file. I experimented with a pixel shift image in RAW with movement control, and the four images were automatically combined in camera to produce a single RAW file of almost 200 Mb! I guess that you then process this image as normal. Compared to a normal exposure of the same view there was additional sharpness where the shot was in focus, but I hadn't used the timer or remote cable as is recommended so it could have been better.
It's what post-processing is done by ACR that I'd like to know....
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 13:51
Algernon wrote:
If you send the K-1 to me I'll test it for you and post back in about a week with the answer
Always happy to oblige
--
Like your style..... If you send the K-1 to me I'll test it for you and post back in about a week with the answer
Always happy to oblige
--
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 11:46
McGregNi wrote:
My suspicion is that for this very specific and model limited feature we'd have to use PDCU to carry out the initial PS options and basic RAW output adjustments.
Understandable suspicions, but in the first release of ACR that supported PixelShift, Adobe wrote:My suspicion is that for this very specific and model limited feature we'd have to use PDCU to carry out the initial PS options and basic RAW output adjustments.
"Please note the following limitations specific to camera support for the Pentax K-3 II:
Pixel shift Resolution (PSR) mode was added in this release. It is recommended to use a tripod and use a 2-second timer to minimize motion artifacts when in PSR mode."
This implies to me that Adobe does combine the 4 images, as this would only matter if the images are combined?.
Hard facts are surprisingly difficult to obtain in this 'Information Age'. A single sentence from Adobe would resolve all ambiguity, but I've had no response to my query.
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 11:43
I would appreciate any insights into the following:
The K1 allows 2 variants of PS, with and without Motion Correction (MC). I am assuming that the RAW image is the same for both variants and it only when the RAW is converted to JPG that the correction takes place.
The latest version of Adobe Camera Raw 'supports' K1 PixelShift RAW images, but it isn't clear to me what 'support' means in this context.
Does support just mean that ACR will open the files and process just 1 of the 4 images into TIFF/JPG or does ACR combine the 4 images into 1?
If the latter, does it implement Motion Correction?. In DCU5 this is a selectable option for conversion.
Thanks
davek
The K1 allows 2 variants of PS, with and without Motion Correction (MC). I am assuming that the RAW image is the same for both variants and it only when the RAW is converted to JPG that the correction takes place.
The latest version of Adobe Camera Raw 'supports' K1 PixelShift RAW images, but it isn't clear to me what 'support' means in this context.
Does support just mean that ACR will open the files and process just 1 of the 4 images into TIFF/JPG or does ACR combine the 4 images into 1?
If the latter, does it implement Motion Correction?. In DCU5 this is a selectable option for conversion.
Thanks
davek
Comment by DaveKitson posted on Question about PixelShift at 10/05/2016 - 09:50
I've had my new toy for over a week now, but have been confined to the house with a leg problem since returning from holiday 3 weeks ago.
I've read the manual several times, photographed every single inch of the lounge and the view from the window.
Yesterday. the weather here was great so I had Mrs K drive me to Cannock Chase, about 7miles away. After a discussion, where she (most unreasonably) declined to act as my Sherpa, I hobbled around for a bit taking picture of the wildlife with the 150-450.
I formed two conclusions:
That the SR must be effective as the shots were hand-held and I was effectively standing on 1 leg.
That 3.5+kg of camera gear is not compatible with a sore leg.
davek
I've read the manual several times, photographed every single inch of the lounge and the view from the window.
Yesterday. the weather here was great so I had Mrs K drive me to Cannock Chase, about 7miles away. After a discussion, where she (most unreasonably) declined to act as my Sherpa, I hobbled around for a bit taking picture of the wildlife with the 150-450.
I formed two conclusions:
That the SR must be effective as the shots were hand-held and I was effectively standing on 1 leg.
That 3.5+kg of camera gear is not compatible with a sore leg.
davek
Comment by DaveKitson posted on New toy frustrations at 07/05/2016 - 12:16
Nice images.... l also like #3 the best.
davek
davek
Comment by DaveKitson posted on Llyn Ogwen x4 at 06/05/2016 - 18:02
cvhennessy wrote:
A small issue noticed. If the crop mode is set to Auto my Tamron 28-75 works ok and takes a full frame image. The Sigma 35mm DG 1.4 Art is identified as being an APS-C lens and the auto mode treats it like that. Its works ok if you set the crop setting to FF (Full frame) though.
I think that this is another side-effect of the fact that Sigma do not license the mount from Pentax:A small issue noticed. If the crop mode is set to Auto my Tamron 28-75 works ok and takes a full frame image. The Sigma 35mm DG 1.4 Art is identified as being an APS-C lens and the auto mode treats it like that. Its works ok if you set the crop setting to FF (Full frame) though.
The lens ID that Sigma use for any given lens is not issued by Pentax, and hence, not recognised by Pentax.
davek
Comment by DaveKitson posted on Report K-1 bugs/issues here at 03/05/2016 - 17:17
I didn't particularly want to install PDCU again as it performed so badly on my PC last time. It was frustratingly slow. Once bitten, twice shy. (Must have been written in 8 bit basic!) What's more my SSD is practically full and I think Windows needs much of the spare capacity left (only 7Gb remaining) so I'd need to uninstall something else first! I've already ditched Adobe reader, that gained more than I expected! And I tried those Nik plug-ins and they've gone already too. Anything installed has to be something essential now.
davek