Specifications#
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 60 mm | At 122 mm | At 250 mm | Equiv. aperture (DoF) |
|---|---|---|---|---|
| APS-C | 90 mm · 26° | 183 mm · 13° | 375 mm · 6° | f/6.0 |
| APS-C (Canon) | 96 mm · 25° | 195 mm · 13° | 400 mm · 6° | f/6.4 |
| Micro Four Thirds | 120 mm · 20° | 244 mm · 10° | 500 mm · 5° | f/8.0 |
Depth of field & background blur#
Computed on its native APS-C format (CoC 20 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 50 mm f/4 on aps-c.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 60 mm | f/4 | 4.1 cm | 16.9 cm | 1.09 m | 4.53 m | 46.1 m | 2.0% |
| 60 mm | f/8 | 8.2 cm | 34.0 cm | 2.25 m | 10.6 m | 23.1 m | 1.0% |
| 122 mm | f/4 | 0.9 cm | 3.9 cm | 25.7 cm | 1.04 m | 190 m | 8.4% |
| 122 mm | f/8 | 1.8 cm | 7.9 cm | 51.4 cm | 2.10 m | 95.3 m | 4.2% |
| 250 mm | f/4 | 0.2 cm | 0.9 cm | 5.9 cm | 24.4 cm | 799 m | 38.0% |
| 250 mm | f/8 | 0.4 cm | 1.8 cm | 11.9 cm | 48.8 cm | 400 m | 19.0% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 60 mm | NPF at 60 mm, f/4 |
|---|---|---|---|
| APS-C | 1/400 s | 6 s | 4 s |
| APS-C (Canon) | 1/400 s | 5 s | 4 s |
| Micro Four Thirds | 1/500 s | 4 s | 4 s |
Compatible cameras#
Bodies in our database with a native Pentax K mount. Full-frame bodies switch to an APS-C crop with this lens.
- Ricoh Pentax KF 2022
- Ricoh Pentax K-3 Mark III 2021
- Pentax K-1 II crop mode
- Ricoh Pentax KP 2017
- Ricoh Pentax K-1 crop mode
- Ricoh Pentax K-70 2016
- Ricoh Pentax K-3 II 2015
- Pentax K-3 2013
- Pentax K-50 2013
- Pentax K-01 2012
- Pentax K-5 II 2012
- Pentax K-30 2012
- Pentax K-5 IIs 2012
- Pentax K-5 2010
- Pentax K-r 2010
- Pentax K-x 2010
- Pentax K200D 2008
- Pentax K20D 2008
- Pentax K-m 2008
- Pentax K110D 2006
- Pentax K100D 2006
- Pentax K10D 2006
- Pentax *ist DL2 2006
- Pentax *ist DL 2005
- Pentax *ist DS 2004
- Pentax *ist D 2003
- Pentax MZ-S crop mode
- Pentax LX crop mode
- Pentax ME crop mode
- Ricoh XR-1 crop mode
- Pentax MX crop mode
- Pentax K-7
- Pentax K-S1
- Pentax K-S2
- Pentax K2000
- Pentax *ist DS2
- Pentax K100D Super
- Samsung GX-10
- Samsung GX-1L
- Samsung GX-1S
Adapt it to other systems#
Similar lenses#
- Pentax HD Pentax-DA 55-300mm f/4-5.8 ED WR f/4–5.8
- Pentax HD Pentax-DA 55-300mm f/4.5-6.3 ED PLM WR RE f/4.5–6.3
- Pentax smc Pentax-DA 55-300mm f/4-5.8 ED f/4–5.8
- Pentax smc Pentax-DA L 55-300mm f/4-5.8 ED f/4–5.8
- Sigma 55-200mm f/4-5.6 DC f/4–5.6
- Pentax HD Pentax-D FA* 70-200mm f/2.8 ED DC AW f/2.8
- Sigma 70-200mm f/2.8 EX DG HSM f/2.8
- Sigma 70-200mm f/2.8 EX DG OS HSM f/2.8
- Sigma 70-300mm f/4-5.6 DG OS f/4–5.6
- Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED f/4–5.6
- Pentax smc Pentax-DA L 50-200mm f/4-5.6 ED WR f/4–5.6
- Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM f/2.8
Frequently asked questions#
Is the Pentax smc Pentax DA* 60-250mm f/4 IF SDM full frame?
No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.
What is the Pentax smc Pentax DA* 60-250mm f/4 IF SDM equivalent to on APS-C?
Its focal length is already the real value for APS-C: 60–250 mm frames like 92–383 mm on full frame.
What is the Pentax smc Pentax DA* 60-250mm f/4 IF SDM good for?
As a telephoto zoom it suits sport, wildlife, events and compressed landscapes.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources