>I think you understand the DX vs FX mode correctly. As you >state it's only whether you crop when taking the image or >later on in processing. > >The only real advantages of doing a DX crop in camera are the >reduced file size, the resulting greater buffer depth if doing >a high speed sequence, and possibly frame rate. > >The biggest disadvantage is that you never have the ability to >change the crop. What if you wanted to take your perfectly >framed DX crop and print it as an 8x10? You would have to >crop some more off the long edge of the frame to fit the new >aspect ratio. If you had content all the way to the edge that >was important to you, the 8x10 wouldn't work. If instead you >took the original in FX mode you could keep the full long >dimension of the DX frame and add some area in the short >dimension to fill the 8x10 space. > >I'd rather use the extra storage to that I can crop to >different aspect ratios in post processing if necessary or if >change my mind downstream.
Agreed. It would need to be a very special case for me to want to use in-camera dx cropping