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FA* 24/2 AL [IF]

General Description

This lens is quite large and heavy, but features an attractive widest aperture and excellent build quality. Unfortunately, as with all silver star-lenses, the silver paint is quite easy to scratch. If you need the f/2 aperture, this is your only choice from Pentax.

Product Information
Exact NameSMC PENTAX-FA* 1:2 24mm IF & AL
Colorsilver-black
Years of Production1991 ~ 2004
Availabilityused, several times a month
Catalog Number22630
Sold with Hoodbayonet hood: PH-RBB67
Sold with Casesoft case: S90-100

Technical Specifications

Optics
Optical Formula11 elements in 9 groups
Aperture Rangef/2 ~ f/22
Number of Aperture Blades8
Minimum Focusing Distance0.3 m
Maximum Magnification0.125 X
Special Featuresaspherical element(s), internal focusing
Mechanics
Filter Diameter67 mm
Maximum Diameter73 mm
Length66 mm
Weight405 g
Special FeaturesAF/MF clutch
Accessories
Capplastic clip-on cap, 67 mm
Fitting Hood(s)bayonet hood: PH-RBB67
Fitting Case(s)soft case: S90-100

Subjective Evaluation

The opinions on this lens differ quite widely. Some are very satisfied with its performance and happy about its widest aperture, others are less enthusiastic. All agree that the lens is very sharp at narrow apertures, but some complain about poor corner sharpness at wide apertures. Since there exists 24/2.8, the most important reason to get this lens is its f/2.0 aperture. But if it is not that good at f/2.0, why should get it in the first place? In addition some say that this lens performs less well on digital bodies as with film, in particular with respect to cromatic aberation. Apparently geometric distortion is also not that great, but this should be less of an issue with cropped digital sensors.