THK Photo Products, Inc.

Both are diffusion type filters but DIFFUSER gives a soft-focus effect due to its irregularly uneven surface while DUTO has fine concentric lines etched on its surface.

The center of the picture is usually sharp with DUTO but DIFFUSER gives an overall soft-focus effect.

Both are particularly effective in portraiture and commercial photography

Available sizes and coatings for 'DIFFUSER'

Size	39.0	46.0	49.0	50.0 Bayonet	52.0	55.0	58.0
Standard	o	o	o	o	o	o	o
HMC	-	-	-	-	-	-	-
S-HMC	-	-	-	-	-	-	-

Size	60.0 Bayonet	62.0	67.0	72.0	77.0	82.0	86.0	95.0
Standard	o	o	o	o	o	o	-	-
HMC	-	-	-	-	-	-	-	-
S-HMC	-	-	-	-	-	-	-	-

Available sizes and coatings for 'DUTO'

Size	39.0	46.0	49.0	50.0 Bayonet	52.0	55.0	58.0
Standard	o	o	o	-	o	o	o
HMC	-	-	-	-	-	-	-
S-HMC	-	-	-	-	-	-	-

Size	60.0 Bayonet	62.0	67.0	72.0	77.0	82.0	86.0	95.0
Standard	-	o	o	o	o	o	-	-
HMC	-	-	-	-	-	-	-	-
S-HMC	-	-	-	-	-	-	-	-

Bayonet 50: Used on older Hasselblad lenses.
Bayonet 60: Used on current Hasselblad lenses.