FF vs APS-C vs 4/3 (mFT) vs compacts vs cell phones at base ISO

Started Jun 1, 2012 | Discussions thread
Graystar
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Re: FF vs APS-C vs 4/3 (mFT) vs compacts vs cell phones at base ISO
In reply to Dennis, Jun 1, 2012

Dennis wrote:

Graystar wrote:

jon404 wrote:

The P&S small sensor allows much better DOF that no FF can match.

Full-frame cameras can match and exceed the DOF of P&S cameras. The typical P&S with aperture control doesn't go smaller than f/8 because the blur from diffraction negates any gains in DOF.

I'm not even sure any more how many digicams have variable apertures (meaning variable at a constant FL; I know the f-stop changes over the zoom range). I think I've read that at least some use ND filters to "stop down" but I could be misremembering or parroting a bad source. I should take my HX5V out and do a test to see for myself.

I think cameras with manual controls still have a variable aperture, but yes, I think many compacts have ND filters that pop into place because you get the reduction in light without the diffraction, and that maintains sharpness. I think it's a good solution to the diffraction issue. I know Canon has been doing this on some cameras for years now.

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