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10-28-2010, 02:33 PM   #16
axl
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QuoteOriginally posted by omega leader Quote
Alright here goes...The depth of field is the same.

A 35mm lens at f1.4, and 55mm lens at f1.4 and an 85mm lens at f1.4 all have the same absolute depth of field if you are framing the same subject on the same format (i.e. a headshot with an APS-C camera).

The only thing that will change will be the amount of background visible. So decide if you like the look of a 85mm lens or the look of a 55mm lens. You can decide this from using a zoom and looking carefully at the background.
this is only true if you don't change the subject - medium distance. Since you are using different FLs trying to achieve the same framing, your distance will change and so will your DOF

10-29-2010, 02:21 PM   #17
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Try your DA70 for the photo you want, the max aperture of f/2.3 is something to take into account. Also, the A50/1.2 could be a different alternative to the shot.
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