Focal length

Discussion in 'Photography Beginners' Forum' started by julie32, May 30, 2008.

  1. julie32

    julie32 TPF Noob!

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    Morning.....

    Where is it that I can tell what my focal length was on a certain shot? I have a canon, and I usually shoot with the info on the screen (histogram, file size, speed, iso and so forth......) but nowhere that I'm seeing does it say the focal length.

    Thanks for your help.
     
  2. Alfred D.

    Alfred D. TPF Noob!

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    Hi Julie,

    every photo file contains a little sub file – the 'EXIF data' – that lists all the values pertaining to that photo. Dozens of values. The focal length used is one of them. Many photo editing apps can make the EXIF data visible. If yours can't: there are also dedicated little EXIF 'viewers' you can download from the internet.

    Example of EXIF data (bold face mine):
    Have fun!
     
  3. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    Open the image with EOS Utility, Digital Photo Pro, Photoshop etc. The focal length will be in the EXIF data.
     
  4. julie32

    julie32 TPF Noob!

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    I'm sorry I didn't specify, I mean on the camera at the time of the shot like the other data I can see..... Sorry.
     
  5. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    If it's not on the info/histogram screen...then I'm not sure that you could find the exact focal length of shots that you have taken.
     
  6. patrickt

    patrickt TPF Noob!

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    My zooms have a scale on them that will tell me, approximately, the focal length I'm shooting. I don't have any reason to use the scale but it's there. My priority is to frame the shot the way I want and not the focal length.

    Primes don't have the scale because they are always the same focal length.
     
  7. julie32

    julie32 TPF Noob!

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    ok thanks for the fast replies. I'll just find it once the photo is on my computer instead of just on the LCD. Thanks again guys.
     
  8. JimmyO

    JimmyO TPF Noob!

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    When going through the pics you've taken you should be able to set it that for each shot it shows the exif infront of the shot, sorry, i dont know how to do this with canon cameras.
     
  9. mrodgers

    mrodgers No longer a newbie, moving up!

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    I have a superzoom (Fuji S5700) and my problem with focal length listed in the exif is, it is always listed at 63 mm at my longest. My camera is 38-380 mm at the 35 mm equivalent.

    I'm looking at one of my photos on photobucket and the details there state "Focal Length: 10.9mm (35mm equivalent: 264mm). I don't get this with any of my photo software or with the exif viewer in Firefox. Flickr also states the low focal length as well.

    I don't know what the 10.9 mm is relating to in my example above. That is zoomed out probably longer than 3/4 of my zoom, but exif in software only states it as 10.9. I think at my widest angle it states 6.3.
     
  10. Alex_B

    Alex_B No longer a newbie, moving up!

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    normally the lens tells you when you take the shot. at least approximately.
     

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