Dumb question Focal Length

[Photofarmer]

Is there a programme/app which can tell average focal length.

Example have 700 images from a night rodeo all taking with 70/200 rf 2.8 trying to establish average focal length.

Reson toying with idea of prime for second rodeo camera for side kick (the wife) either 135 rf 1.8 or 85mm rf 1.2 gut feel 135mm might be close to average but the extra stops of light with 1.2 is big as well for night rodeo.

cheers all

 

[Dean Wilson]

I have heard of, but never used, a program called "Exposure Plot".

Exposure Plot website

 

[ShipleyNW]

I'm not sure I've ever seen software that will aggregate exif data from multiple image files. You could build your own using something like exiftool software to scrape the focal length data from individual image files, then throw that data into a spreadsheet to calculate the average.

 

[chipman]

Screen shot from 10+ year old version of exposure plot. I should update it but don't use it that much.