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The editor is looking for: attempt to crop at 10x7. I would NOT crop at 300dpi or 3000 by 2000 though because that makes the image 18mb in size. I think he is more focused on dimensions.
That's all he sent me.
I'm not sure if will make a difference or not. However, I'm going to crop in Photo Mechanic next time instead of PhotoShop.
It's 7MB uncompressed for SRAW and 10MB for RAW.