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Marco Raugei | profile | all galleries >> Technique >> Focal Length equivalents tree view | thumbnails | slideshow

Focal Length equivalents

The following is just a handy little table providing the approximate equivalent Focal Lengths (based on their corresponding Diagonal Angles Of View) for a range of common lens types and photographic formats.

Lens type (D-AOV) 35mm film / 'Full Frame' digital (24x36mm) APS-C size digital (~ 16x24mm) m43 size digital (~ 18x13.5mm) Medium Format digital (33x44mm / 30x45mm) 6x4.5 film 6x7 film 4x5" film 8x10" film
Ultrawide-angle (> 90 deg) < 21 < 14 < 11 < 25 < 35 < 40 < 75 < 150
Wide-angle (85-65 deg) 24-35 16-23 12-18 30-45 40-60 50-70 90-130 180-260
NORMAL (~ 50 deg) 40-55 27-35 20-30 50-70 65-90 80-110 150-200 300-400
Medium tele (30-18 deg) 75-135 50-90 40-70 95-180 120-220 150-270 280-500 550-1000
Long Tele (< 12 deg) > 200 > 135 > 100 > 250 > 300 > 400 > 750 > 1500
FL and angle of view
FL and angle of view