Potential dead horse: how bad is FF's deep DoF disadvantage?

Started 6 months ago | Discussions thread
Ontario Gone
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Re: Long tele and close macro
In reply to TrapperJohn, 6 months ago

TrapperJohn wrote:

Those are two areas where a larger sensor can be at a disadvantage.

With long tele, not only is the magnification less for a given focal length, the DOF can be too shallow at even moderate stops. That huge 300 F2.8 is actually being shot at F8 to get enough DOF back to get the subject fully in focus. True that one can crop a large sensor tele shot, but there's still no substitute for being able to visualize the actual image in the VF.

Even if you crop, you are now throwing away a number of pixels (and therefore an amount of light) in order to get that DOF back. This is no different than setting ISO two stops higher, it's simply chasing our tails. There is no way around it, for an equal given DOF and framing, the amount of light captured appears to be identical regardless of the sensor size. This means that there is no advantage one way or another, but with size, weight and cost, there is a real difference.

When camera companies realize that people are realizing this, they will start to make "pro" cameras in sub FF formats (not that there has never been, but you get the point). I would like to see an apsc DSLR with 1DX AF specs ect. The point that FF elitists fail to acknowledge is that camera performance and DOF is not just about sensor size, it's about lens aperture too.

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