07-19-2022, 11:00 PM
With respect to the performance - the city scenes were shot from a 5km-ish distance - thus these can't be tack sharp due to atmospheric blur/haze.
But yes, the aperture range is so slow towards the long end that diffraction is becoming the limiting factor. At f/8, the effective resolution is somewhat lower than the resolution of the sensor.
This isn't too important today, but with Fujifilm's upcoming 40mp sensor, it will become more obvious.
Basically, it's the same situation as with Canon's RF 600/800mm f/11 - or slow-speed (f/5.6) MTF lenses.
I'm slightly baffled that the manufacturers accept these limitations. On FF, the design ceiling should be at ~f/9, and on APC-C at ~f/6.3.
That all being said - the Fujinon is very lightweight, and this makes it a quite enjoyable experience.
But yes, the aperture range is so slow towards the long end that diffraction is becoming the limiting factor. At f/8, the effective resolution is somewhat lower than the resolution of the sensor.
This isn't too important today, but with Fujifilm's upcoming 40mp sensor, it will become more obvious.
Basically, it's the same situation as with Canon's RF 600/800mm f/11 - or slow-speed (f/5.6) MTF lenses.
I'm slightly baffled that the manufacturers accept these limitations. On FF, the design ceiling should be at ~f/9, and on APC-C at ~f/6.3.
That all being said - the Fujinon is very lightweight, and this makes it a quite enjoyable experience.
Chief Editor - opticallimits.com
Doing all things Canon, MFT, Sony and Fuji
Doing all things Canon, MFT, Sony and Fuji