There are 2104 lenses in our database and 3495 owners opinions.

You can also
compare lenses side-by-side

Search by:

Pentax smc FA 31 mm f/1.8 AL

Manufacturer Pentax
Model smc FA 31 mm f/1.8 AL
Lens style Wide angle
Focal length 31 mm
Maximum aperture f/1.8
Angle of view 69.8 o
Closest focusing distance 0.3 m
Maximum magnification 1:6.25
Minimum aperture 22
Number of diaphragm blades 9
Auto focus type AF
Lens Construction 9 elements / 7 groups
Filter diameter 58 mm
Macro No
Available mounts Pentax K
Dimensions 66 x 68.5 mm
Weight 345 g
Additional information
Average rating (5 owners reviews)
Build quality
Optical quality
Value for money


4.80 Good
Owners reviews (5)
  1. vrrattko
    vrrattko 18 July 2017, 06:21
    Build quality
    Optical quality
    Value for money


    IP 109.81.x.x
    Owner since: 6 years
    Price: 600 eur
    User profile: Amateur

    Cons: Only cons I can think of: not weather sealed build in hood prevents mounting filter holders for lee or cokin.....although this is easily corrected by adding some extender rings

    Pros: Oustanding build quality, relatively small size, but feels substantial in hand. Build in metal hood. Fast AF. Aesthetics - premium design. Optics - great bokeh for wide angle. Very sharp and plenty of microcontrast. Small chromatic aberations for an old lens. F1.8 aperture. 58mm filter thread.

    Summary: Truly premium lens - etalon of Pentax limited lenses. Bokeh rendering + sharpness at low apertures gives photos special interesting look, that is unique.

  2. robbiec
    robbiec 12 May 2013, 21:35
    Build quality
    Optical quality
    Value for money


    IP 109.76.x.x
    Owner since: 6 months
    Price: $850
    User profile: Amateur

    Cons: Its front heavy and large compared to its peers the 43 and 77

    Pros: Build quality is superb. Image quality is draw dropping, its difficult to describe until you use it to take an image yourself, images just seem more alive, could be micro contrast or the vividness of light transmission but it is doing something special.

    Summary: Not a lens to be judged purely on benchmarks, it needs to be judged on the image you receive. Price wise, can be expensive but don't forget you are buying a lens aristocrat :-) I got mine 2nd hand and it equated to €675 which to me is a bargain for what it delivers.

  3. Antoine
    Antoine 17 May 2012, 10:59
    Build quality
    Optical quality
    Value for money


    IP 77.194.x.x
    Owner since: 4 years
    Price: 832 US$
    User profile: Amateur

    Cons: Expensive

    Pros: Outstanding image quality, even at full aperture Excellent colour rendition Beautiful Bokeh

    Summary: Highly recommended Note: my sample was made in Japan

  4. Arnold
    Arnold 19 February 2010, 15:55
    Build quality
    Optical quality
    Value for money


    IP 134.100.x.x
    Owner since: 5 years
    Price: 899 Euros
    User profile: Amateur

    Cons: Relatively large, heavy, and expensive.

    Pros: Outstanding image and build quality.

    Summary: My standard normal lens on the K20D. My standard wide-angle on the LX. Near to perfect image quality. However, when size and weight matter, I sometimes replace it with the A28/2.

  5. florinn
    florinn 23 October 2009, 13:11
    Build quality
    Optical quality
    Value for money


    IP 79.183.x.x
    Owner since: 1 month
    Price: 960 US$
    User profile: Amateur

    Cons: Excellent build Very sharp

    Pros: Expensive

    Summary: Recommended

Add your opinion

Build quality 0 1 2 3 4 5
Optical quality 0 1 2 3 4 5
Value for money 0 1 2 3 4 5