Background Blur Calculator
Calculate how blurred your background will be based on lens settings and distances. Perfect for portrait photographers seeking subject isolation.
Shooting Parameters
Full frame = 36mm, APS-C = 23.5mm
Background Blur Circle
1.104 mm
Strong
BBlur Diameter
1104 um
FFrame Coverage
3.07%
RDistance Ratio
3.2x
QBlur Rating
Strong
Blur at Different Focal Lengths
35mm0.187 mm
50mm0.382 mm
85mm1.104 mm
105mm1.684 mm
135mm2.784 mm
200mm6.111 mm
Recommended Background Distances
Moderate Blur2.5 m
Strong Blur2.5 m
Very Strong Blur2.5 m