Just installed the Ee-S Focusing screen on my 5D

Just as a datapoint, the camera is now -much- easier to manually focus. I use either f4.0 or f2.8 lenses and the view thorugh the finder is plenty bright. If I stop down to f20 or so and use the DOF preview, the view (even in bright light) becomes too dim to see, but it pretty much did that with the stock screen anyway.

With the stock screen I literally could not tell if the subject was in correct focus.

I give this product a two thumbs up.

Installation took about two minutes including reading the instructions.

(Low post count disclaimer: not affiliated with Canon or any photo retailer. I shoot as a hobby)

well, you'll get a very dim viewfinder at f20 regardless... should be 64 times dimmer than at f2.8.. that's very dim...

Exactly. I think that's what I said. The reviews that I read for the Ee-S all say that it shouldn't be used with lenses slower that f2.8 because the image would be dark. I didn't notice that until the lenses has been stopped down way beyond that.

How does the Ee-S screen compare to the standard screen with a f4 lens at say, f6.3?

To be honest, I couldn't tell the difference in brightness. The focus "pop" is just crisper. I was always frustrated with the out-of-the-box screen since I had to trust the auto focus to do its job without being able to verify it with the viewfinder. It could just be my vision. . .

I am just looking for any advantage for focusing in low light.

Can't give you personal advice on that yet. I've only had it for a day so far. Sorry.

I just wanted to bump this...

I installed one on my 5d tonight.. HUGE difference, I recommend it to all 5d owners.

nice I'll be giving it a shot too.
Just hope the viewfinder doesn't look too shabby with F/4 lenses cos i really like my 24-105mm

cowpix wrote in post #2350263
How does the Ee-S screen compare to the standard screen with a f4 lens at say, f6.3?

The screen don't work like you're thinking. If you stop down to f6.3 the lens is still wide open to it's widest aperture. The lens will only stop down to f6.3 when you press the shutter button to take the picture so the viewfinder is still showing its widest even though it's stopped down...

unless you are using older manual aperture lenses.. then it will be dark

I got the equivalent for the 5D2 about a week after I bought the camera.

Honestly, I don't see enough of a difference in viewfinder brightness that would even begin to offset the increased confidence it gives you in all focusing situations.

I used it to shoot a party a few weekends ago in some VERY dim clubs, and the lack of brightness was never an issue for composition. Unfortunately, the lighting was too dim for manual focus, but the AF worked great, and the darkening of the viewfinder was a non-issue.

It's definitely a highly-recommended upgrade.

Now if anyone made one for the 1D3...

Is the 5D2 equivalent the Eg-S screen??

Think I need one for focussing my TSE24

Yes, the Eg-s is the correct part for the 5D2.

Honestly, the camera should just come with this screen, it's so much better than the stock screen.

big_g wrote in post #11795570
Is the 5D2 equivalent the Eg-S screen??

Think I need one for focussing my TSE24

I had the ee-s screen in my 5d classic and loved it. I'm sure the eg-s screen is great in the 5d2 but.....you have live view. I feel like that would be way more valuable than a matte screen, when playing with a ts-e lens.