firemothsa

Check the comparing tool here at dpreview comparing say a lumix G9 with a Sony a72 or 3 at iso 200 the G9 doesn't cut oof that badly at all. At iso 3200 it isn't that sharp anymore. By the way,...

@ ecka 84 you said"let's say given F-number gives you 100 lumen/sq_meter on the sensor. Then with m43 sensor you get 100 lumen/sq_meter * 225 sq_mm = 0.0225 lumen. With FF sensor you get 100...

It depends on the light per surface area…. the mft sensor may be smaller but the light is bundled tighter. F1.2 gives you the same amount light per square inch independent of sensor size.

Watch...

F2.8 is F2.8 …. the amount of light hitting the sensor is the same...the only difference is the the DOF and look.

Placed 25^th in the challenge.

Placed 35^th in the challenge. a Bluetit

Placed 12^th in the challenge.