If Sony releases a FF Nex what will this do to X sales?

Started Aug 10, 2013 | Discussions thread
sgoldswo Veteran Member • Posts: 5,717
FF is larger

Rod McD wrote:

BTW, would people please stop saying that all FF cameras are bigger and that all FF lenses are bigger. - It's getting like some sort of religion here in DPR despite all evidence to the contrary. It's simply not true all the time. The APSC X Pro1 is bigger (wider and higher) than a FF Leica.

But the M9 is considerably heavier than an X-pro1 as are its lenses. In addition all of the lenses are primes that aren't that big on FF DSLRs. Even if a FF body were to be tiny (RX1 sized) it would still have to have proportionately larger lenses than an APS-C camera to cover the sensor. Once the lenses get bigger you might as well have a larger body. Have you seen a Leica M240 with an R zoom mounted? It looks ridiculous.

And there many FF lenses out there that are no bigger (and some are smaller) than similar APSC lenses. And that includes some AF lenses of reasonable speed - eg the Contax G lenses.

No. That simply isn't true. Lens designers still have to obey the laws of physics. So in a lens design that was otherwise identical but one version was designed to cover APS-C and one FF, the FF lens would be larger. It has to be, it's covering a larger sensor.

The only way to get FF lenses smaller will be to reduce the optical performance or to reduce the maximum aperture. See Voigtlanders SLII line of pancakes for FF DSLRs. They sacrifice corner performance at wider apertures and are generally slower in order to be smaller.

Just consign the 'FF is bigger' mantra to the bin, at least if you're talking bodies and prime mirror-less lenses. It's all a matter of design.

FF IS bigger - that's a fact. A FF lens on a non-DSLR camera can be smaller than a FF lens for a DSLR, but not by that much (it goes more to reducing width than length). Neither will be as small as a comparable lens for a non-DSLR camera with an APS-C sensor.

I acknowledge that fast 24-70 & 70-200 zooms and very long FF tele lenses are big, but if you're planning to use them, you're better off with a DSLR anyway.


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