Say i had a FX lens and took that photo on a FX body, i would get the whole scene - ie everything inside the green square?
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if i used the same FX lens, but on a DX body, i would only get what is inside the red square - correct?
that is the crop factor - for arguments sake say 1.5x crop factor
i'm understand that fully. where i'm unsure is the "reach".
eg a 400mm FX lens becomes a 600mm lens on a DX body.
now, a 400mm FX lens on a FX body has certain characteristics. like certain minimum focussing distance, a certain DoF etc. so when it becomes a 600mm lens, how do all those things change?
will i really get a further reach? ie a larger magnification of the bird/wildlife i'm trying to photo?
i'm googling around for this info but am getting nowhere. virtually all sites only show the crop factor change.
so, you have any ideas? could you point me to a website with the info?
ta for your help.
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Edit / Update:
i think i've finally found the answer.
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that shows the image for a 50mm on a FX body and then on a DX body. so that shows the "reach" we get - ie the 50mm becomes a 75mm.
there will also be changes to the min/max focussing distances and DoF for which i think i can use
http://www.dofmaster.com to work out what's what.
by all means please add whatever knowledge you have on this. i'm learning all the time.
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