Lens Compression Calculator
Understand how focal length affects perspective and background compression.
Scene Setup
Portrait Recommendations
headshot:135mm ideal
half Body:85mm ideal
full Body:50mm ideal
environmental:35mm ideal
Compression Effect
1.70x
Natural perspective
Scene Analysis
Subject to BG Ratio1:6.67
BG Magnification1.70x vs 50mm
Effective FL85mm
Lens TypeTelephoto
Compression by Focal Length
24mm0.48x at 0.8m
Exaggerated depth
35mm0.70x at 1.2m
Exaggerated depth
50mm1.00x at 1.8m
Natural perspective
85mm1.70x at 3.0m
Compressed depth
135mm2.70x at 4.8m
Compressed depth
200mm4.00x at 7.1m
Compressed depth
300mm6.00x at 10.6m
Compressed depth
Background Blur by Aperture
f/1.4344.0mm blur - Creamy blur
f/2240.8mm blur - Creamy blur
f/2.8172.0mm blur - Creamy blur
f/4120.4mm blur - Creamy blur
f/5.686.0mm blur - Creamy blur
f/860.2mm blur - Creamy blur