photophill: If have a question I have been wondering about for a while?I have a D7000 DX body. And the D4 FX body has practically the same specs in regards to sensor resolution and sensor megapixel size. Yet the D4 has a larger sensor that leaves me with the question, "What is the real advantage with the larger sensor size?" For me a larger and heavier body and compatible lenses is no real advantage. Regards PhotoPhill
p.s x15. I couldn't agree with you more! ;-)
Naveed, of course, that's clear to me. A lens does not know what sensor is in behind. What I try to explain is the bigger the sensor, the easier it is to achieve smal DOF with lenses that project a similar angle of view. When you take a picture with FF it is easier to isolate an object than using a compact with a much smaller sensor (and a lens with a much smaller focus length), using the same aperture. So full frame is in advantage to achieve smal DOF over APS-C. Just because you can use lenses with longer focal length. That's what this topic was about isn't it?
No nonsense at all I think! The proportion between object and picture (sensor size) has also influence on depth of field. Take the same shot with a FF camera with 50 mm f 2.0 and a APS-C camera with 35 mm f 2.0 and you will discover less DOF on the first one (with a smaller sensor you have to mount a smaller focus length to get the same angle of view). That's the reaseon why compacts with a tiny sensor takes pictures with everything sharp and also why macro shots has no DOF at all left with full aperture (the proportion has become 1:1). DOF is a function of focal length, aperture, distance and sensor size.
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