A7r 24-70 vs Nex-7 16-70 vs EM1 12-40

Started Mar 2, 2014 | Discussions thread
forpetessake Veteran Member • Posts: 4,892
Re: EM1 12-40 vs Nex 5r speed booster with 24-105L

bigley Ling wrote:

a very un scientific test I did at home tonight

Not just unscientific, it's flawed. The 12-40/2.8 is full equivalent (disregarding aspect ratio) of 24-80/5.6 on FF, not just DOF. You set it on f/2.8, i.e. f/5.6 on FF. And 24-105/4+SB on APS-C is full equivalent of 25.6-112/4.26 on FF, which you set at f/4, i.e f/4.26 on FF. So what are you comparing?

to compare bokeh from m43 vs APS-C speed booster to simulate close to full frame.

Olympus E-M1 with 12-40 f2.8 (DOF 5.6 equivalent) f2.8 light gathering

Sony NEX5r with speed booster and 24-105 f4L (DOF f4.0 equivalent) f2.8 light gathering

please ignore the while balance, obviously the E-M1 seems to have a cooler incandescent white balance over the NEX 5r

comments welcome

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