That's this cool thing on the internet: One who never ever tried a mirrorless + long lens + extender knows everything what's needed to suggest the manufacturer a shutter lag/refresh rate of the EVF to his needs although he never will buy an α9 or α10.
Tony Northrup was wrong in the past, here maybe as well by constructing a use case which I never found to be troublesome. I suspect, his camera was set to a lower EVF refresh rate. He was machinegunning, so the shutter lag doesn't matter at all. And I still wonder why he (who is not known as a bird photographer) finds so many problems whereas Mark Smith appears to change between DLSR and mirrorless α9 without any troubles?
One note in the manual says " During blackout-free shooting, the slower the shutter speed, the lower the refresh rate of the screen. If you want the screen display to be smooth in order to track the subject, set a shutter speed faster than 1/125 second." (but that's for silent shutter, I could not find any data about the refresh rate)
Refresh rate apart: how safe and accurate can you shoot when using the monopod setting of Northrup and being on a boat, with a 1200/8 lens? How often are you using a 600 mm with TC? If the pictures of the flying bird were done with this combination, the bird was 1/4 mile away and the quality was rather low. No tele ever will be as good as getting close to the bird. And although I own a TC 1.7 II and a TC 2.0 III, I'm no fan of these rather expensive devices.
Don't get me wrong, dave, I don't want to defend Sony but I question the conclusions of Northrup once again.
Tony Northrup was wrong in the past, here maybe as well by constructing a use case which I never found to be troublesome. I suspect, his camera was set to a lower EVF refresh rate. He was machinegunning, so the shutter lag doesn't matter at all. And I still wonder why he (who is not known as a bird photographer) finds so many problems whereas Mark Smith appears to change between DLSR and mirrorless α9 without any troubles?
One note in the manual says " During blackout-free shooting, the slower the shutter speed, the lower the refresh rate of the screen. If you want the screen display to be smooth in order to track the subject, set a shutter speed faster than 1/125 second." (but that's for silent shutter, I could not find any data about the refresh rate)
Refresh rate apart: how safe and accurate can you shoot when using the monopod setting of Northrup and being on a boat, with a 1200/8 lens? How often are you using a 600 mm with TC? If the pictures of the flying bird were done with this combination, the bird was 1/4 mile away and the quality was rather low. No tele ever will be as good as getting close to the bird. And although I own a TC 1.7 II and a TC 2.0 III, I'm no fan of these rather expensive devices.
Don't get me wrong, dave, I don't want to defend Sony but I question the conclusions of Northrup once again.