Size comparison of FE 4/2470 on A7 vs Olympus 12-40 f2.8 on GX7

Started Feb 6, 2014 | Discussions thread
Erik Magnuson Forum Pro • Posts: 12,247
Re: Doesn't work like that

Krich13 wrote:

I prefer to look at the lens magnification with respect to the sensor size

Then the smaller the sensor the better? The pentax Q is the best macro platform?

Today Oly sensor is 16 MP, tomorrow it may issue a new sensor of higher pixel count -- but the lens will remain the same.

And larger sensors will also increase pixel counts. The next Sony FF sensor is reported to have essentially the same pixel pitch as the E-M1 sensor.  There is every reason to believe that this trend will continue.

Yes it is closer than I mistakenly presented, but the difference is still huge. [...] You need x0.4 magnification on A7, but this Zeiss only delivers x0.2.

Since the question is size, we have to ask if the 1-stop less DOF/light gathering + optical stabilization is more or less significant than the different FOV at the long end and closer focus.   Or compare to the Panasonic 12-35mm which has the same FOV, similar 0.17x close focus, also in-lens stabilization, but still collects 1/2 the total light.

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