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01/31/2013 05:34:50 PM · #1 |
A friend of mine made the following youtube video asking about the difference in depth of field between an FX and DX lens. I can't explain the difference. Can someone explain this.
Thanks
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01/31/2013 06:13:10 PM · #2 |
If you use the same lens on both the APS and the Full Frame camera at the same distance to the subject, the depth of field will be the same. It is just cropping is all. And this is the technically correct answer.
If you compose in such a way on the APS (DX) camera to make the field of view the same as the Full Frame, the depth of field will be different. (More of a real world scenario).
All of this is at a given aperture.
Message edited by author 2013-01-31 18:13:58. |
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01/31/2013 06:44:19 PM · #3 |
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01/31/2013 07:27:50 PM · #4 |
Not sure where he's getting his DoF numbers; they seem large. In fact, they are even greater than what DoFMaster reports. And in my experience, DoFMaster is liberal.
The one point of (his) confusion I can clarify: a 50mm lens is a 50mm lens, either on an APS-C or a 35mm body. The only thing that changes, as  jaysonmc posted, is the crop, in other words how much of the image circle the camera records.
In either case, the lens projects the exact same image on the sensor; the differences in DoF are purely due to the way that image is recorded and later magnified. |
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01/31/2013 08:23:21 PM · #5 |
A further discussion.
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