Focusing Screen

[slkfis]

I can't find my answer by searching this forum so I'll ask.

A friend gave me a EF CZR-9566 grided focusing screen that he said would fit my 40D.

Will this type of screen help a newbie with bifocals learn to manually focus better? My manuals don't do to well and I've read many threads about bifocals.

All replies appreciated.

thxs

slkfis
Bob

[gjl711]

Not really, but it will help you get horizons straight. For manual focusing it might be better if you adjust the camera diopter so that you shoot without glasses.

[net_tech]

Ef-D is the focusing screen for 40d (just got one myself) figured it would be easier to look at the grid in the viewfinder than at the HOT SHOE TWO AXIS BUBBLE LEVEL on the top of the camera

[Wilt]

A focusing screen really does not help someone with bifocals...it is more beneficial to first adjust the adjustable diopter control next to the eyepiece, so that you can look into the viewfinder and see a sharp image of the focus points. Remove the lens to adjust the diopter control, since you will be better able to concentrate on how well/poorly you see the focus points.

[slkfis]

Hi Folks,
I appreciate the replies. I have adjusted the diopter and this helps a lot. Some how I felt there might be some magic in the different focusing screen.

Thxs very much

slkfis
good ol bob

[Wilt]

Hi Folks,
I appreciate the replies. I have adjusted the diopter and this helps a lot. Some how I felt there might be some magic in the different focusing screen.

Thxs very much

slkfis
good ol bob

If you weren't seeing the screen well, a different focusing screen would not make it better. A screen like the EF-S for the 40D will improve the focusing with f/2.8 lenses simply because it is a bit coarser than the standard screen. The standard screens are made for best screen brightness at the expense of fineness of focus, since part of the light is lost because it is diverted thru the half-silvered mirror to the AF sensor.

[beeng]

Doesn't the 40D have a dioptric adjuster so that you can use it without glasses? I don't wear glasses, so I don't know much about this stuff. I just remember reading something about it in my 10d manual ages ago.

[20droger]

Doesn't the 40D have a dioptric adjuster so that you can use it without glasses? I don't wear glasses, so I don't know much about this stuff. I just remember reading something about it in my 10d manual ages ago.
Yes, it does. It's the lttle wheel right next to the eyepiece.

Turn the camera off and set the lens to "MF", point the camera at a blank wall, intentionally misfocus it so the wall is soft and fuzzy in the eyepiece, then adjust the diopter wheel until the little autofocus squares are as sharp as possible. This will bring the eyepiece into focus on the focus screen for your individual eye.

[Wilt]

Yes, it does. It's the lttle wheel right next to the eyepiece.

Turn the camera off and set the lens to "MF", point the camera at a blank wall, intentionally misfocus it so the wall is soft and fuzzy in the eyepiece, then adjust the diopter wheel until the little autofocus squares are as sharp as possible. This will bring the eyepiece into focus on the focus screen for your individual eye.

Or just remove the lens to adjust the diopter