A tiny and personal test of some EVF

JeremieB wrote:

JeremieB wrote:

Roland Karlsson wrote:

KPM2 wrote:

Hello again Roland Karlsson

maybe it is interesting for you:

EVF fps in dim light:

https://www.dpreview.com/forums/post/64303653

from the Canon forum.

best regards. KPM2

Thanx - although it is old info it was interesting. It seems like, for Canon R5, the EVF is coupled to the actual shutter speed. So, one way of improving the finder is to use M mode and auto ISO and then set the speed high enough for the stutter to go away. Rather annoying that the view finder forces me to use certain shutter speeds.

I wonder, is it so for all cameras?

BTW, R5 was one of the cameras that got a thumbs down when I tested it. It was really bad.

And in that case, I should really redo my test. But "Fotomässan" is over, and physical photo shops where you can test the cameras together are rare.

This whole thread makes me think there's a major difference between OVF and EVF:

- an OVF is strictly described by a small number of parameters (brightness size), and those parameters are completely independent from the rest of the camera

Ok quick erratum, not completely independent as there's the AF/AE system in the middle.

There are many other parameters that you may be interested in, like mirror blackout time, mirror delay, mirror shock...

How well the AF algorithm can track motion during mirror blackout. What shutter speeds that may be affected by mirror shock....

It just that EVF works differently and there is a different set of parameters that affect the use of the camera and how you can work around them.

Every camera has a number of compromises in the design, and you need to decide what is good enough for you. The perfect camera will never exist.

- an EVF is described by a much larger number of parameters, and its quality highly depends on the camera itself:

- as it's the image captured by the sensor, the sensor has a huge impact (high ISO noise, readout speeds, could explain why experience of Z5 and Z6 is different)

- it has common live view configuration (preview exposure or not), but also many others (which is great)

- and then it has all the characteristics of a screen, resolution definition colors contrast refresh rate max lumens ... But also battery consumption.

- you could also test EVF behavior when battery gets low as the camera might activate energy saving measures ( sorry )

I'd say the MPX count of the evf might be the least interesting thing to know about it nowadays.