Before the rush

Before the rush
by evan-pak

Submit your Photo
Hall of Fame

Please participate in Meta
and help us grow.

Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I know that this marker on my Canon EOS shows me where my sensor is:

image showing camera body

Form technical point of view this is interesting, but is there benefit for me as a photographer to know exactly on which level my sensor is?

Is there a similar marker on DSLR of other brands, like Nikon?

share|improve this question
To answer your second question. It's the same marker pretty much everywhere, and it's on all serious cameras of any make (including Nikon, etc...). – Fake Name Dec 1 '13 at 13:50
possible duplicate of What is an "image plane indicator"? – mattdm Dec 1 '13 at 14:05
Hmm... the recommended duplicate isn't asking the same question, it's just by chance that the answer there contains relevant information. – John Cavan Dec 1 '13 at 22:47
@mattdm. Thanks for the links to the other questions -> Helps me also. Thinks that is not a duplicate in question self, but sure the answers overlap. – Micha Dec 2 '13 at 9:54
up vote 6 down vote accepted

it is used to precisely measure the distance of the subject from the camera. so you can adjust the focus on the distance scale on your lens. it is also used to determine(calculate) the reproduction ratio / Macro Mode Maximum Magnification.

share|improve this answer
Thanks for answer (+1 for that). Very interesting point. So you need the marker (only) for very precise measurements? – Micha Dec 2 '13 at 9:56
at least as far as i know. and i haven't found anything more about this topic. thanks for up – user2664856 Dec 2 '13 at 11:04

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.