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 Post subject: Cropping-raw, jpeg,tiff?
PostPosted: Sat Jun 05, 2010 1:05 pm 
At the moment I'm doing a fair bit of motorsport photography, the problem I have is I currently only have the kit lens so some of the photos aren't close enough and require cropping, I'm yet to fully understand raw, tiff, jpegs etc, so to keep the quality at its highest, which option is best -
1. Take the photos in raw, convert them to jpeg, then crop them?

2. Take the photos in jpeg and crop them?

3. Take the photos in raw, convert to tiff, crop them and then convert to jpeg

4. Take the photos in raw, crop in raw and then convert to jpeg (I don't seem to be able to do this at the moment?)


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 Post subject:
PostPosted: Sat Jun 05, 2010 2:26 pm 
The best option would be to convert the RAW files to JPEG, and then crop the JPEG. You won't be able to make permanent modifications to the RAW file, so cropping the RAW file directly is a no-no.


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 Post subject:
PostPosted: Sat Jun 05, 2010 5:03 pm 
What are the differences between an edited RAW and an edited JPEG?
Are they (microscopically) different on small image sizes or are they noticeable on posters only?


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 Post subject:
PostPosted: Sat Jun 05, 2010 5:27 pm 
RAW files cannot be changed. So when people talk about editing RAW files, they make changes to an image that was rendered from a RAW file and then save it to a format like JPEG/TIFF.


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 Post subject:
PostPosted: Sat Jun 05, 2010 5:37 pm 
Ah, awesome!
I thought programs like Camera Raw and many others edited and saved RAW files.
Good to know that it's not so different of my Photoshop editing.


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 Post subject:
PostPosted: Sat Jun 05, 2010 6:25 pm 
So what is the difference between taking a picture in jpeg and cropping it, to taking a picture in raw, converting it to jpeg and then cropping it? As in both cases it is only jpeg when you crop it?!


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 Post subject:
PostPosted: Sat Jun 05, 2010 6:38 pm 
Grr I hate croppers :twisted:


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 Post subject:
PostPosted: Sat Jun 05, 2010 6:44 pm 
Its not ideal but I don't have a choice at the moment :roll:.


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 Post subject:
PostPosted: Sat Jun 05, 2010 8:08 pm 
I don't know if I'm right but I think the difference is in-camera.
RAW quality is better than JPEG even before you transfer to your computer.
So, the cropped versions of both follow the same logic.
As I said, however, the different will not be seen on small prints or on your Flickr page for example.


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 Post subject:
PostPosted: Sun Jun 06, 2010 7:05 am 
RAW is the equivalent of a film negative, it is not the final output. RAW editors just keep track of all the changes you made, "stack" them on top of the RAW file and export the output as whatever format you chose.


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