This video explains what that mystery symbol on your camera is

Jul 17, 2018

John Aldred

John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter – and occasional beta tester – of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

This video explains what that mystery symbol on your camera is

Jul 17, 2018

John Aldred

John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter – and occasional beta tester – of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

Join the Discussion

Share on:

YouTube video

There are many symbols on our cameras these days. Most of them are next to buttons that have a function. And we usually instinctively know what those functions are. Or, we can soon learn by pushing them and playing around.

There’s one symbol that exists on almost all cameras today, though, that has no button, no function, and often no explanation in the manual. But here, ZY Productions explains exactly what it is and what it’s for.

You can see the symbol in the YouTube thumbnail above, but if you grab your camera, I’d bet you’ll see it on there, too. It’s a circle with a long line through it. And what it does is highlight the position of the film plane. Or, in the case of digital, the sensor plane.

Why is this important? Well, it’s because when it comes to the focus distance of lenses, this is where it’s measured from. The film/sensor plane. It’s a common misconception that the focus distance is the distance from the front of the lens to your subject. But that’s not true. it’s the distance from the film plane to your subject.

With modern autofocus systems, this isn’t as important as it might once have been for stills photography. But for video, where manual focus is still prevalent, knowing your actual focus distance can be important. Some cameras even have a protruding part to which you can hook a tape measure and physically measure distances.

I don’t know when this symbol first appeared on cameras. It’s there on my 50+ year old Nikkormat FTn cameras. But, it’s absent from my Nikon N90s (1992-2001). And it reappears again on the top of the Nikon F100 and all of my Nikon & Canon DSLRs. So, it’s not something that seems to have been kept up with consistently by all manufacturers.

It’s there on pretty much all DSLR and mirrorless cameras from the main manufacturers these days, though.

So, if you ever wondered what it meant, now you know

Filed Under:

Tagged With:

Find this interesting? Share it with your friends!

John Aldred

John Aldred

John Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter – and occasional beta tester – of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

Join the Discussion

DIYP Comment Policy
Be nice, be on-topic, no personal information or flames.

Leave a Reply

Your email address will not be published. Required fields are marked *

6 responses to “This video explains what that mystery symbol on your camera is”

  1. Edward Philip Maria Nafzger Avatar
    Edward Philip Maria Nafzger

    Focal plane it is where the sensor is hosted.

    1. Adrian Gordon Avatar
      Adrian Gordon

      #saynotoclickbait

    2. Edward Philip Maria Nafzger Avatar
      Edward Philip Maria Nafzger

      i knew that click

  2. Mike Avatar
    Mike

    Always wondered what that little symbol was, thanks for the article. You learn something new everyday.

  3. Davide Dag Cardella Avatar
    Davide Dag Cardella

    Mystery symbol…

  4. Gael Gahewir Avatar
    Gael Gahewir

    strange that he don’t mention his usage in Panorama Making process..