12 votes
Accepted

Do focusing screens exist for modern DSLRs?

What you are showing isn't just a focusing screen. It is a focusing screen with two special focusing aids. First, it has a split prism, which works as a tiny rangefinder — when the two sides are ...
user avatar
  • 140k
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 ...
user avatar
  • 49.2k
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-...
user avatar
  • 9,192
5 votes

How does ground glass work when focussing?

The physics... The ground glass (or plastic) screen acts as a diffuser, scattering light passing through it randomly rather than simply letting it pass through unaffected. An image can be brought to ...
user avatar
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 ...
user avatar
  • 168k
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 ...
user avatar
  • 168k
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 ...
user avatar
  • 49.2k
4 votes

How does ground glass work when focussing?

The ground glass, or focusing screen, is, in the simplest case, literally just a piece of glass that has been ground, so one of its sides has a rough/matte surface (see also the article Ground glass ...
user avatar
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 ...
user avatar
  • 26.3k
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 ...
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 ...
user avatar
  • 8,334
3 votes
Accepted

Possible to draw a custom grid on a focusing screen?

I would suggest rather than drawing directly on the ground glass focusing screen that you use a piece of clear laminate material to draw on. If you draw your desired lines onto paper, tape the plastic ...
user avatar
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 ...
user avatar
2 votes

Focusing Screen for a Canon 60D using an 85mm f1.2 lens

Focusing screens for cameras with autofocus tend to be - almost per definition - optimized for use with autofocus lenses, which tend to be relatively "slow" with an aperture in the f/3.5-5.6 range. In ...
user avatar
  • 7,364
2 votes

How should I clean my focusing screen?

Take it to a repair shop. Nine times out of ten you make it worse when trying to fix these kind of things at home.
user avatar
  • 21
2 votes

Are Nikon focus screens cross compatible?

My experience with Nikon bodies is that each body takes a slightly different shaped focusing screen. Even the second link in your question points out that there are different screens for the F4 and ...
user avatar
  • 21
2 votes
Accepted

What are the differences between different types of focusing screens?

There are generally three main different types of focusing screens: Split circle with a prism collar Matte Gridded And umpteen variants of each of these. But the first type was more common in film ...
user avatar
  • 49.2k
2 votes

What is a good focus point for street photography when using zone focusing?

It is true that for a camera with a 23mm lens and crop factor 1.52 (inferring from your 35mm) that at f/8 the hyperfocal distance is a little over 10 feet (closer to 11 actually). "Is it correct" is ...
user avatar
  • 1,087
2 votes
Accepted

Best approach for accurate & fast focusing of fully manual lenses without live view. Focus chip, focusing screen or another approach?

This is probably opinion-based, but in my personal experience, hands-down, the focus screen is the way to go. I've used AF-confirm chipped adapter rings with manual lenses, and I've also swapped out ...
user avatar
  • 49.2k
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 ...
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 ...
user avatar
2 votes

Do focusing screens exist for modern DSLRs?

Simple answer: yes. Inexpensive option: 'Bresson'. Here's a review. I have one for my 5100.
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 ...
user avatar
  • 26.3k
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 ...
user avatar
  • 168k
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 ...
user avatar
  • 31.2k
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-...
user avatar
  • 168k
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 ...
user avatar
  • 168k
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 ...
user avatar
  • 168k
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 ...
user avatar
  • 168k
1 vote

What is a good focus point for street photography when using zone focusing?

I do the same with my camera because it's a pain to focus manually (Olympus XA). I suggest that rather than just taking someone's word for it, that you play around with a DOF/hyperfocal calculator ...
user avatar
  • 131

Only top scored, non community-wiki answers of a minimum length are eligible