conurus

[Trondster]

A little tidbit of information - since the NEX sensor (crop factor 1.5x) is slightly larger than the Canon APS-C sensor (crop facto 1.6x), there may be some vignetting with certain EF-S lenses - especially those that already have visible vignetting on the smaller Canon sensor.
Third party lenses made for 1.5x crop should be fine, or at least just as good as when used on other 1.5x crop sensors.

This is the same situation as when using EF-S lenses with Canons new C300 with a 1.5x crop sensor, where Canon writes the following:

[conurus]

Yes you are right. I will need to update the product description to clarify this point. Thank you very much!

[conurus]

Casual test of EF-S 17-55/2.8 IS USM, shot wide open at 17mm f/2.8.

Actually, that lens would vignette on a 1.6x crop Canon DSLR, too. On my 1.5x crop NEX-7, it isn't doing noticeably worse. I have not done a formal test but in practical usage I think it is probably ok to disregard the 1.5x vs 1.6x difference. Stopping down a couple of f-stops helps a lot, in both cases.

[ideniti]

Thanks for testing out the EF-S 17-55! I have a series of EF lenses and that one EF-S lens, so I'm seriously considering the Metabones adapter for my NEX-7.

One more question (and not a terribly important one but would be good to know)... I read that Paul Antico used the EF-S 17-55 on his short "The Cost" shot on the Canon C300. He mentioned that the lens hood would show up in the shot on the wide end. I know the NEX-7 and the Canon C300 are two completely different beasts, but they share similarly sized sensors. Do you have the Canon EF-S 17-55 lens hood and if so, had any of the same issues with the NEX-7?

Any input would be greatly appreciated. Thanks!

[conurus]

I don't ever recall seeing the hood in the frame with my knock-off, non-genuine petal-shaped hood for the EF-S 17-55.