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Forum: Digital Processing, Software, and Printing 03-25-2019, 08:08 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Sorry to hear that it did not work for you:(. I've used pdcu4 and it produces images that are pretty close to the same rendering as the in-camera processing (in most cases) and it is definitely capable of producing full resolution jpegs at high quality jpeg settings. It is certainly clunky and not a fast program.

As a side note, it is also able to rapidly extract the full resolution jpeg previews from pef or dng files out of my k5iis (note the "extract jpeg" option is distinctly different from the "save as" option).
Forum: Digital Processing, Software, and Printing 03-22-2019, 05:15 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
If you're set on shooting RAW only but still being able to produce high quality jpegs that use the in-camera settings, then I'm not sure there's another option. Try it out, if it doesn't do what you want, uninstall it:).
Forum: Digital Processing, Software, and Printing 03-21-2019, 01:49 PM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Yes. It used to come on a disk with your camera (it may still). Your raw files will carry the in-camera settings, most raw converters will ignore them or possibly misinterpret them, but DCU will do what you want and use these in-camera settings. If you want to shoot RAW only but still be able to produce high quality jpegs that use your in-camera image settings, this might be your only option. Try it.



Have you tried making custom presets in Lightroom that give you the look of thein-camera Jpegs? Then just apply on import. A basic preset might cut down on a bunch of your editing time. Make a basic Landscape one, a basic Portrait one, etc. I don't see much point in fiddling with the in-camera settings if I can make more flexible presets in the raw converter of my choice.



Hah! There's really no other way:P. It helps to know what the settings do so you can make your own adjustments, but what's good enough for one person might be hideous for another.



I wouldn't be outputting things from faststone with the intent of much editing in another program.



It depends on what you're doing with the files after you convert:P. Not much you can do with respect to the speed. If it's instant jpegs you want for reviewing, you might try the Instant Jpeg From Raw program, it really is close to "instant". The outputs really won't be suitable for much editing or anything heavy duty, but they are great for review, especially if you have a slow computer (I'm still rocking a q6600).
Forum: Digital Processing, Software, and Printing 03-21-2019, 11:48 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Ahh, were you working with pef's or dng's? I've just tried both and ExifTool doesn't want to find the full res jpg from out of camera dng's, but it seems to handle pef's just fine. IJFR finds the full res from both pef and dng.

---------- Post added 03-21-19 at 02:51 PM ----------



Whoops, I should have checked his website more carefully:

Instant JPEG from RAW ? Michael Tapes Design
Forum: Digital Processing, Software, and Printing 03-21-2019, 11:17 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Exiftool can extract the full resolution preview, in ExifToolGui use "-b -jpgfromraw -w filename.jpg". So can Instant Jpeg From Raw. This is the one used for the magnified view on the rear LCD (do it and check, you can compare the 8x8 jpeg block artifacts).
Forum: Digital Processing, Software, and Printing 03-21-2019, 08:53 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
I'm not sure of your point?



Not if you zoom in it isn't.



Then where are they coming from if both IJFR and ExifTool can find them?

edit- try entering "-preview:all" in exiftoolgui's "Exiftool Direct" window, my sample k3 pef shows 3 different sized embedded previews, one ~3MB (Jpg From Raw), one ~50k (Preview Image), and one ~7k (Thumbnail Image).
Forum: Digital Processing, Software, and Printing 03-21-2019, 08:30 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Hmm, I just tried exiftool gui v4.2.0.0 and only have the options to export from cr2 or nef, I will update and try again. I say again- Instant Jpeg from Raw finds full sized previews, so no, the tiny files are not consistent with other programs. If all the camera has are 720x480, how would you zoom in without immediate pixellation on the back of the LCD?

Edit- updated exiftool gui to 5.16.0.0 and extracted a 6016x4000 pixel 3mb preview image from a k3 pef file.
Forum: Digital Processing, Software, and Printing 03-21-2019, 07:57 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
There are multiple preview images. I've tested on k3 raws I've downloaded from Imaging resources, and IJFR finds full resolution ones. What options are you using for exiftool? It may not be finding all of the previews or is defaulting to the smallest.
Forum: Digital Processing, Software, and Printing 03-21-2019, 06:38 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
The RAWs will have embedded full resolution jpeg previews. I just downloaded and checked a couple K-1 files using "Instant Jpeg From Raw" and it extracted full resolution (4912x7630 pixels) files that were about 4MB. Compression varied depending on content, JPEGSnoop approximated one to a Quality setting of 76 in Faststone.





Ah right, I forgot about that setting. It looks like the "Save As" option always works off the RAW file and not the embedded preview, but the "Batch Convert" respects the option you mentioned. I agree that it's a bad idea to use the batch convert to re-compress a bunch of jpeg preview files that might already be of sketchy quality. It does take about half the time though (Instant JPEG from RAW is almost instantaneous, and would be a better option if it was the previews someone was after).
Forum: Digital Processing, Software, and Printing 03-21-2019, 05:15 AM  
FastStone Image Viewer and extracting Jpg's from RAW DNG's
Posted By BrianR
Replies: 66
Views: 2,774
Are you sure Faststone is extracting the built-in jpeg previews and not generating new ones? There are programs that will extract these previews "as is", I've used "Instant JPEG from RAW", but depending on your use they might be unsuitable. The camera will generate a full resolution preview, but it adjusts the jpeg compression level and aims to keep the file size below a set amount. On my k5iis, the full sized preview was something like 1mb. Depending on the image content, you might end up with very noticeable compression artifacts.

What is your use for these jpegs?

As to faststone's options:

Quality level- there is a huge amount of diminishing returns in the higher quality levels. There is a great discussion and interactive examples from Lightroom here Jeffrey Friedl's Blog An Analysis of Lightroom JPEG Export Quality Settings. Do note that Lightroom's quality levels don't line up with Faststone's but the general principle is the same (the highest quality settings start to give little quality improvement for a massive amount of file bloating).

Photometric- changes how the colours are encoded in the jpeg. I've never fiddled with these, YCbCr is the norm as far as I know for photos and works well with the colour subsampling and human vision.

Progressive- see here What is a progressive JPEG? | Liquid Web Knowledge Base will make a little difference in how they are displayed on the web as the image is loading. Has a minor effect on the filesize, but nothing to write home about.

Optimize Huffman - keep this ticked. It makes the non-lossy part of the jpeg compression more efficient at the cost of a bit of time during the initial compression.

Color Subsampling - "Medium" is generally fine for screen use, sometimes 'High" is ok too. It depends on the content.


Best bet? Make a sample set of a dozen or so images covering a range of image content. Run them through your program of choice in batches with different settings. Find out what works for you.
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