Canon's release of 600/800mm f11 lenses PROVES you don't need Cannons!

Started 2 months ago | Discussions thread
Wu Jiaqiu
Wu Jiaqiu Forum Pro • Posts: 26,792
Re: Canon's release of 600/800mm f11 lenses PROVES you don't need Cannons!

cosmicnode wrote:

Mark Ransom wrote:

cosmicnode wrote:

the point is that when the m4/3 and FF reaches the max iso of 25600 to get 1/1000 sec shutter speed at f11 m4/3 can can retain this shutter speed at f5.6 where the Canon has to drop to 1/250 sec when the light is poor. and when using a 300 f4 on m4/3 it can still shoot at 1/1000sec when the Canon has to drop to 1/125sec.

Do you really use m4/3 at ISO 25600? I'd never dare to go that high, not even sure it's possible with my camera. The only time I'd even be tempted is if I saw Bigfoot at dusk.

The point is that whatever your limit is on m4/3, I'm pretty sure you'll be able to go 2 stops higher on FF.

I don't and I would use 2 more stops more on a FF even less. The extra 2 stops shutter speed is more important, even during the heat and brightness of a summers day when you shoot at fast shutter speeds the ISO is high, This was shot at 1/4000 sec I normally don't shoot at shutter speeds this high but I was looking for sharp details of different cars, I do shoot at faster shutter speeds when the car is coming towards me but normally around 1/1000 sec. This was shot at 550mm, 1/4000 sec and iso 1800, at the brightest part of a july day. if I had shot at f11 this would have been ISO 7200. these ISO settings increase when the light level is lower. A f5.6 lens is far more practical for shooting sport than a slow f11, Forget equivalents for a minute this is the the way it is for sport. f5.6 is already a compromise but a economic and weight compromise. f11 is simply to much of a compromise to be useful except on a bright summers day for the midday hours.

you could drop your shutter speed...i guess my vehicle is going faster

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