7 votes

Why don't DSLRs come equipped with "classic" focusing screens (split prism, etc)?

You'll find most split-circle focusing screens in manual focus film SLRs. In these cameras, the mirror is very efficient, and reflects all of the light up into the viewfinder. A little gets diverted ...
inkista's user avatar
  • 52k
6 votes
Accepted

Are focusing aids part of the lens or the body?

These focusing aids are part of the focusing screen, which is part of the viewing system within the camera body. Some cameras have user-interchangeable focusing screens, others have factory-...
osullic's user avatar
  • 12k
5 votes
Accepted

Which side on an EOS focusing screen shall face up?

Every Canon camera I've ever seen that has a user replaceable focusing screen has the large tab, intended as the point of contact for the custom tool Canon supplies with all replacement screens, on ...
Michael C's user avatar
  • 175k
5 votes
Accepted

Canon 5D MkIV one focus point is unmovable, flashing

You can register a frequently-used AF point to the camera. You can then use the Custom Controls menu to select either the 'Depth of Field' button or the lens' 'AF Stop' button (if the lens is so ...
Michael C's user avatar
  • 175k
4 votes
Accepted

How can I make it easier to focus with my manual f/1.4 lens without making it worse for slower lenses?

Sounds to me like you've never actually used a different focus screen on your 6D, and you're obsessing about something you've read online. Just get the super-precision matte screen (Eg-S). I've ...
inkista's user avatar
  • 52k
3 votes

Will a split prism indicator still work if installed well off center?

An off-center split prism should work fine to assist manual focusing at the spot it's located. Lens resolution tends to drop off toward the edges. So the farther off-center the focus point, the lower ...
xiota's user avatar
  • 27k
3 votes
Accepted

Canon 100D focusing screen

Your focus screen fell out with its' metal carrier ring attached? If that is actually the case then the focus screen cannot be replaced w/o a major service... it will almost certainly be cheaper to ...
Steven Kersting's user avatar
3 votes
Accepted

Just how much light does the Eg-S Focusing Screen reduce?

It seems that f/4 lens can get a bit too dark using Canon Eg-S screen. On this forum, one user said: I tried 24-105 f/4L and for indoor uses or outdoors at evening I believe VF is too dark. It's ...
aaaaa says reinstate Monica's user avatar
3 votes

Are focusing aids part of the lens or the body?

If the focusing aid was part of the lens, it would be visible in the image. That's because they are optical elements themselves, which means they change the properties of the light that goes through ...
null's user avatar
  • 8,514
2 votes
Accepted

Donuts in the bokeh through the viewfinder of Canon 6D

I went to a camera store today and looked through the viewfinder of their floor model using my same 180 mm f/3.5 lens. I was able to see the same little donuts at the center of the defocused ...
Tony Pulokas's user avatar
2 votes

Donuts in the bokeh through the viewfinder of Canon 6D

There are three things you should inspect, mirror focus screen and viewfinder. Check this link, to clean your DSLR You view is blurry because you need to Calibrat the Diopter on Your Camera While ...
71m383nd3r's user avatar
2 votes

Any ideas on how to attach a bigger focusing screen on an existing SLR?

Changing the size of the focusing screen is not reasonably possible. jarnbjo explains why the focusing screen is the same size as the film format: The focusing screen is always the same distance ...
xiota's user avatar
  • 27k
1 vote

Does an offset split-focus screen exist?

The basic factors of the problem: Although modern focus systems allow you to choose from several points to tell the camera what spot or area you want the camera to focus on, this has not always been ...
Michael C's user avatar
  • 175k
1 vote
Accepted

Does an offset split-focus screen exist?

When I do this, I guess the slight movement of the camera as I've tilted it down has thrown the focus off and I often see hairs 4/5cm behind the eyes in focus instead of the eyes. If you're careful ...
Caleb's user avatar
  • 31.7k
1 vote
Accepted

Canon Eos 1V focusing screen EC-CIV

Although I can't recall ever seeing it officially confirmed by Canon, I think the general wisdom back in the day was that the laser-matte screens with a Roman numeral in the name worked better at C.Fn-...
Michael C's user avatar
  • 175k
1 vote

Is it Possible to Remove the Autofocus Points From the Viewfinder When Using a Split Focusing Screen?

Is there any way to forgo the autofocus points in my viewfinder? Perhaps replace the second piece of glass with a blank one? You would need to replace the piece in question with another piece that is ...
Michael C's user avatar
  • 175k
1 vote

Focus points only visible in the dark on my EOS 550D

Many EOS cameras have a menu or custom function option regarding when AF points light up in the viewfinder and when they don't. The default setting is "automatic", which means they light up in darker ...
Michael C's user avatar
  • 175k
1 vote

Donuts in the bokeh through the viewfinder of Canon 6D

The "donut" bokeh you are seeing in the viewfinder is probably related to the way the reflex mirror is made in modern DSLRs. The center of the mirror is not as reflective as the outer edges are. This ...
Michael C's user avatar
  • 175k

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