Spreadsheet for calculating distance to the bird (1 Viewer)

janvangastel

Well-known member

• Aug 10, 2014

• #1

Now that the Digiscope calculator website is down for some time already, I have made a spreadsheet to calculate the distance to the bird, from the photograph. If you are interested, it can be downloaded from this page, bottom, left side.

 

proudpapa56

Where'd you go, stay put!

• Aug 20, 2014

• #2

35 mm equivalent

Was looking at your 35mm equivalent tele length calc and would like to know if I've got this right for my set-up.

30 (Swaro STX/95 mag) x 30 (TLS-APO focal length) x 2.7 (Nikon V3 crop factor) = 2430 35mm equivalent

If that's correct, it's quite a bit more than I thought.

Thanks

 

janvangastel

Well-known member

• Aug 21, 2014

• #3

Yes, that's right.

 

proudpapa56

Where'd you go, stay put!

• Aug 21, 2014

• #4

Thanks again. That actually puts things in better perspective in my head. My brain was trying to compare apples to oranges when it should have been apples to grapefruits.

 

Last edited: Aug 21, 2014