Format Comparison Spreadsheet+

Brown crested nuthatch

A
Brown crested nuthatch

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Double Self-Portrait

A
Double Self-Portrait

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IMG_0728l.jpg

D
IMG_0728l.jpg

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  • 1
  • 89
Metalwork still life

A
Metalwork still life

  • 9
  • 3
  • 125

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craigclu

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I open this from time to time when I forget the diagonal of a format, etc. It shows the film area and diagonals for the basic formats. I first did this some years ago and I believe I used the frame on film measurements from exposed images on my own equipment so it may not be at an accepted standard but should serve as a good general reference. Please point out any errors you spot as this wasn't meant for "prime time" but just a handy, quick reference for my own use. Maybe some panoramics would be interesting to add for calculating an "ideal" enlarging lens focal length, etc?
 

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  • formats.xls
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ic-racer

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Feb 25, 2007
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Your diagonals are within a millimeter of those I have measured on my equipment. I have a similar spreadsheet that goes on to do the math for all the focal length equivalents (based on the diagonals).
 

Ian Grant

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Joined
Aug 2, 2004
Messages
23,262
Location
West Midland
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Craig, if you want to take it a few steps further it's useful to add half-frame, and 10x8 as well as 6x12 and 6x17. In my own table I also have 9x12cm as that's a sheet film format I'm using.

Then have a comparison of lenses & coverage - particularly useful for Large format work because it ties in with the diagonal of the film formats. Just a few thoughts.

Ian
 
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