Crop Factor, Low Light and Aperture with m4/3 lenses? Part 2

Started Jun 16, 2014 | Discussions thread
Anders W Forum Pro • Posts: 21,468
Re: Crop Factor, Low Light and Aperture with m4/3 lenses? Part 2

Just another Canon shooter wrote:

Anders W wrote:

May I remind you that you entered an exchange between me and posters who made claims based on enlargement that there were good reasons for me to question.

All I said then was:

No that was not what you said when you entered the exchange between noirdesir (and indirectly the OP) and me here:

Does anybody have a doubt, that for whatever reason, systems with larger sensors do provide more resolution?

This remains true as of today.

Yes, a real truism, as already pointed out.

Let me know what distinguishes this truism from the following one:

Does anyone have a doubt that for whatever reason, sensors with more pixels will provide more resolution than sensors with fewer.

One good way to get FL control is to have a capable zoom (with less lenses in the bag). The m43 system has no meaningful answer to the FF f/4 zooms.

For my needs, the 12-40/2.8 is a meaningful answer. When I need the FF equivalent of f/4 or (or a bit wider) for subject isolation by background blur, I would usually use my 45/1.8 and/or 75/1.8. I prefer that to carrying a 70-200/4 FF zoom.

F/4 needed for subject isolation? Really? Did I isolate the subject well here:

No, if that was what you intended, you failed miserably. I'd rather speak of insufficient DoF (in the second case) here.


How about here?

70-200 at f/4

EDIT: DXOmark contradicts your claim that the 20/1.4 is sharper than the Canon 50/1.4 (as PZ does), by far, but you knew that, right?

As to PZ, I already notified you here

of the fact that you have apparently overlooked the big sign about non-comparability across platforms posted on their home page.

Well, I did, and I am still well and alive. Better than comparing some voodoo acutance scores.

I don't know which of those two is worse, but neither is good. Better is to compare reasonably comparable data obtained by known methods, as I did here:

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus OM-D E-M5 Olympus E-M1 Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +28 more
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