Lens · prime
SMC Pentax-A 200mm f/4
Pentax · 1984-1989
Vintage35mm
Pentax's A-series telephoto with program mode compatibility. SMC Pentax-A 200mm f/4: 6 elements in 6 groups, 8 aperture blades, 1.9m minimum focus, 52mm filter thread, 405g.
- Focal length
- 200mm
- Max aperture
- f/4
- Mount
- Pentax K
- Format
- 35mm
- Elements / groups
- 6 / 6
Known for
- Wildlife
- Sports
- Events
- Compact telephoto
Considerations
- f/4 limits low light
- Front element rotates during focus
Optical characteristics
Silverlog's editorial rating: our own judgement, not measured data.
Sharpness (wide)4, level 4 of 5
Sharpness (stopped)5, level 5 of 5
Contrast5, level 5 of 5
Flare resistance5, level 5 of 5
CA control4, level 4 of 5
Vignetting control4, level 4 of 5
Distortion control5, level 5 of 5
Bokeh: Smooth telephoto
Rendering: Sharp, punchy
Colour: Neutral
Silverlog's editorial rating, 1 to 5; five is best. Not lab-measured.
Common issues
- Hood mechanism wear
- Focus ring stiffness
Buying guide
Check hood mechanism and focus smoothness.
Specifications
| Mount | Pentax K |
| Focal Length | 200mm |
| Max Aperture | f/4 |
| Min Aperture | f/32 |
| Aperture Blades | 8 |
| Min Focus | 1.9m |
| Filter Size | 52mm |
| Weight | 405g |
Optical design
| Formula | Telephoto |
| Elements | 6 |
| Groups | 6 |
| Coating | SMC (Pentax) |
Pricing
- Typical used price
- £50 - £95
- Mint
- ~£130
Indicative, no dated source.