Also, I do not retain the original ARW files after conversion. I don't convert on import but rather after I have culled out images I do not want to keep (I shoot raw plus jpeg, so the jpegs allow me to quickly review my images). I haven't noticed any downsides, and all relevant information, including lens profiles, is retained in the DNG, as far as I can tell, using Camera Raw. After conversion, the file size is about the same as Sony's lossy compressed ARW files. I convert uncompressed ARW files from my A7r2 using the DNG converter. I'm going to try a test with an older ARW file apply the lens profile to the ARW file and see if I get the same behaviour toggling between the AWR and DNG cropped images. When I was installing the DNG converter as a standalone utility I noticed that it seemed to be loading lens profiles. I'm hoping the new firmware will fix this. So the Sigma lens did something to the 7RIV software. After that, I could not add a lens profile to any ARW regardless of the lens used. It turned out this wasn't related to the conversion.īack tracking I was able to ascertain that I could add lens profiles on all my ARW files up to when I used the Sigma 17-50 for the first time. When I tried to add the lens profile in Silkypix, it wouldn't let me add it on either the ARW or DNG. I thought this might be due to the lens profile. It's only noticeable if you toggle between an ARW and a DNG file. The one thing I've noticed so far is that on cropped images, using the same parameter file so crop is same size and same position, I get a slightly different view. You will loose lens profile info in the raw So in follow up to my initial question, if you have done this, are there any downsides I might be missing.Īs far as I know, there are two main problems with converting to DNG. I'll probably keep the ARW as a backup for now until I get comfortable there are no surprises, So far there doesn't seem to be any reason why I couldn't change my workflow to 1) download ARW files from SD Card to a folder on the computer HD 2) convert ARW to DNG 3) develop DNG files. This is useful for older RAW files that I have already processed. Another bonus is that the Silkypix development parameter file for the ARW file can be changed to the DNG file simply by changing ARW to DNG in the file name. A bonus is that the batch of DNG files loads faster than the ARW files in Silkypix due to the smaller files sizes I guess. I processed the files in SilkyPix and it looks and behaves the same. The conversion is straightforward and works as advertised. I came across DNG Converter, a free utility from Adobe that converts the files, with no loss to a format that is roughly half the file size of the ARW files. In any case I would rather shoot in uncompressed mode and it occurred to me there might be a utility with no loss compression that would compress the ARW files after the fact. I didn't notice a difference in quality at lower ISO's but noticed more noise at higher ISO's. I shot in compressed mode on a trip in January more to be sure that I didn't run out of cards. Yes storage is relatively cheap but then there are other hassles with time for backup etc. To date it hasn't been too much of a problem processing them. The file sizes are large about 120Mb for FF and 52Mb. I've been shooting uncompressed RAW on my RIV. Has anyone used DNG Converter to compress uncompressed ARW files?
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