07-09-2020, 10:46 AM
I have no issues whatsoever with the specs. They are very reasonable for a certain usage pattern.
However, it has to be said that 500mm f/7.1 is diffraction-limited on the EOS R5 - or to phrase it differently, it'll not out-resolve the sensor regardless of how good the design is.
Theoretically, things go downhill from f/5.6 on this sensor (red light at f/5.6 on FF: 38mp max).
That's still all fine ... but not at 2899GBP. Well, we'll know in an hour. Maybe it's a typo and it's 1899GBP.
BTW, regarding the 600/800mm f/11. For green/yellow light, they have a max theoretical resolution of 16mp (red light: 10mp) - thus they are really more for the R6.
However, it has to be said that 500mm f/7.1 is diffraction-limited on the EOS R5 - or to phrase it differently, it'll not out-resolve the sensor regardless of how good the design is.
Theoretically, things go downhill from f/5.6 on this sensor (red light at f/5.6 on FF: 38mp max).
That's still all fine ... but not at 2899GBP. Well, we'll know in an hour. Maybe it's a typo and it's 1899GBP.
BTW, regarding the 600/800mm f/11. For green/yellow light, they have a max theoretical resolution of 16mp (red light: 10mp) - thus they are really more for the R6.
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Doing all things Canon, MFT, Sony and Fuji