Fovi AS - Pentax Pro Shop

• Apparent field of view of 85°, the widest viewing angle in the XW series, suitable for observing nebulae and star clusters.
• A new optical system with 7 elements in 5 groups that surpasses the conventional XW series to obtain sharp star images all the way to the edge of the field of view.
• Original multilayer coating for outstanding light transmission efficiency
• Advanced light-shielding technology for improved image contrast
• Weather-resistant (JIS Class 4) construction for all-weather viewing (note cannot be used under water).

Specifications

	XW23	XW16.5
Focal Length	23mm	16.5mm
Lens Construction [Elements/Groups]	7/5	7/5
Apparent Angle of View	85°	85°
Eye Relief*	20mm (12mm)	20mm (12mm)
Sleeve Size	50.8mm	50.8mm
Length & Diameter [mm]	125 x 76	142 x 76
Weight [g]	770g	745g
Lens Construction Diagram