Jock Elliott
Hall of Famer
- Location
- Troy, NY
Is it f/stop times crop factor?
Cheers, Jock
Cheers, Jock
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How does one compute equivalent aperture?
- Thread starter Jock Elliott
- Start date
Boid
All-Pro
- Location
- Bangalore, India
- Name
- Rajiv
Amin wrote a treatise about it a while ago. Also enlisted google to help out in the calculations
https://www.photographerslounge.org/showthread.php?t=11338&highlight=equivalent+depth+field
https://www.photographerslounge.org/showthread.php?t=11338&highlight=equivalent+depth+field
Jock Elliott
Hall of Famer
- Location
- Troy, NY
Chris2500dk
Top Veteran
- Location
- Copenhagen, Denmark
The really quick and dirty version is to multiply the lens aperture with the crop factor to get the f stop in fullframe equivalent.
For example Sony RX100, f1.8-4.9 crop factor 2.7 = f4.9-13 FF equivalent
It does get a bit messy with sensors not in the 3:2 form factor, but for a rough comparison it's certainly accurate enough, it's not like you can tell a huge difference between f10.5 and f11.5 DoF anyway.
For example Sony RX100, f1.8-4.9 crop factor 2.7 = f4.9-13 FF equivalent
It does get a bit messy with sensors not in the 3:2 form factor, but for a rough comparison it's certainly accurate enough, it's not like you can tell a huge difference between f10.5 and f11.5 DoF anyway.
