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  Previous versions of Z250SA's message #16932555 « RF 200-800 vs 600 f4 dilemma »

  

Z250SA
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Re: RF 200-800 vs 600 f4 dilemma


Anyone care to reveal a number or two? ISO? Shutter speed? Obviously at f/8 (at 600mm) or f/9.

The 200-800 appears to have a sweetspot around 600mm. The small jump from f/9 to f/8 together with the smallish jump from 800 to 600mm might be enough to get an ISO jump out of the worst noice and(!) chromatic aberration.

I have to try out this trick. Forcing myself to use anything but 800 when I have it available and feel I need 800, that takes some intelligent thinking that usually is lacking at those moments of excitement...

Edit: This is with the R5 and the R52. The chromatic aberration is nothing major, but it is visible at 100% peeping and adds to a minor weakness at high ISO. This was at long distance, about 400m. It´s likely to vary with distance, also for the better.

Any correction has to decide whether it is CA or noice or the reality. I´m no noice reduktion vizard. Perhaps our glorious AI does well with the corrections?



Nov 20, 2025 at 04:06 PM
Z250SA
Offline
Upload & Sell: Off
Re: RF 200-800 vs 600 f4 dilemma


Anyone care to reveal a number or two? ISO? Shutter speed? Obviously at f/8 (at 600mm) or f/9.

The 200-800 appears to have a sweetspot around 600mm. The small jump from f/9 to f/8 together with the smallish jump from 800 to 600mm might be enough to get an ISO jump out of the worst noice and(!) chromatic aberration.

I have to try out this trick. Forcing myself to use anything but 800 when I have it available and feel I need 800, that takes some intelligent thinking that usually is lacking at those moments of excitement...



Nov 20, 2025 at 08:08 AM





  Previous versions of Z250SA's message #16932555 « RF 200-800 vs 600 f4 dilemma »