Windows XP 64Bit 6 In 1 Highly Compressed Only 10MB ISO File.rar
Kym Cavrak
Nando Harmsen is a Dutch photographer that is specialized in wedding and landscape photography. With his roots in the analog photo age he gained an extensive knowledge about photography techniques and equipment, and shares this through his personal blog and many workshops.
I appreciate this post. Until just recently, I've only been able to find The Digital Picture's comparison, which reached the same conclusion as you did. It's good to have more than one opinion. I have begun using cRAW myself, because I can't see an appreciable difference between RAW and cRaw. With my EOS R, I compared a 3 stop underexposure correction, and I could just barely see a difference between the two. The RAW wasn't better, it was just slightly different. That's good enough for me.
Windows XP 64Bit 6 In 1 Highly Compressed Only 10MB ISO File.rar
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Well, to me as a computer person, "lossless compression" has a very specific and well defined meaning!
It means that after decompression, all the exact same bits are restored as you had before compression. Not a single bit difference.
Just like WinZip.
I have been shooting the CR3 files now for two weeks on my R5 for commercial work, and cannot see any decrease in quality. However, importing/rendering previews and exporting are much slower, but that is to be expected when working with any more compressed file type.
I did not think of that. Sounds logical; uncompressing a file takes time indeed.
When I was working on the 4000 images of the weddings I shot with the EOS R5, I was expecting a slower culling due to the 45mp files, but it worked acceptable quick.
Well, if your disk speed is that slow, you probably wouldn't notice difference between compressed or non. I cant think of any examples where editing compressed file would be faster than a non compressed one, that dont include poor file management/storage solution practices.
Correct me if I'm wrong, but isn't "medium" or "small" RAW about the size of the image itself, in pixels? Not about choosing the file-format, which is "Canon Raw", or "Canon Raw 2", or "Canon Raw 3" -- the latter two being compressed (like ZIP files are compressed).
I never experienced that. Just like Tim van der Leeuw says; it is just less pixels.
Although it would be a nice to test the sraw and mraw next to the raw files in my EOS 5D4. I often wondered if there would be a difference between the three. Some believe there is, some say it doesn't make a difference
Yes you are right, shooting medium or small raw looks incredibly different to my eye as well. Was super disappointed the first time I tried this. I dont know the technically details here, but essentially I think there is some aggressive pixel binning happening in camera, which is never a good thing.
Thanks for this comparison Nando! I know that memory is cheap, but when you count storing your files, then backing them up in 2 different locations, storing half the data by using cRAW would be very appreciated :)
a YouTuber has also test CRAW vs RAW differences, basically, CRAW only affect the extremely dark area, otherwise no much different, I am very surprised that it does not preserve more high light area at all on RAW Video: =617
craw is just another way to store the data. There is no other difference. That is why highlights aren't preserved. You should read my previous article about the highlight preservation settings on cameras. I did a test for that also
As I make mostly night star phtography and panoramic night images of milky way and star trails, and since I use a Canon R5, doing the exposure stiching of several images taken as raw with the 45 megapixels sensor can be a proble, especially to stitch them together afterwords. You need a very powerful computer and still much time to build the full panoramic image.
The C-Raw seams great but I read comments that with underexposed or dark images, bring back details can be a problem with C-Raw versus Raw and for my night photography might be a very bad idea.
What is your opinion?
The c-raw is just a raw file that has been compressed. If you open the image in a stitching program, the file will ben decompressed. The data that will be used for the stitching is probably the same for both raw and c-raw.
It will only make a difference when storing the files itself.
I just got my new M200 and had to realize, that there is a huge difference between RAW and cRAW. If you enable lens correction, RAW still stores the pictures uncorrected, but cRAW picrures are stored corrected like JPG images. Take a picture from a straight line near one side of the picture. With cRAW and JPG, the line is straight, with RAW it is bended.
Just curious if CRAW is slower than RAW for the camera body to process particulary when burst firing? I'm using an EOS RP and it's not the fastest for tracking in servo etc - if CRAW uses the cameras CPU to compress does that slow down performance as a whole when shooting?
Thank you for that very usefull comparison, Nando.
From all I've heard and read so far about cRAW, it is *not* a lossless compression. Anyways, I'm pretty convinced, the use of cRAW highly depends on what one is trying to achieve.