Sigma 50-200mm F4-5.6 DC OS HSM is a Variable aperture Auto Focus (AF)
Telephoto Zoom lens with Optical Image stabilization and APS-C / DX max sensor coverage, and it is designed to be used with
KAF3 Mount cameras.
The Sigma 50-200mm F4-5.6 DC OS HSM is also available in the Canon EF , Sony Alpha, Sigma SA and Nikon F (DX) mounts.
What type of photography is the Sigma 50-200mm F4-5.6 DC OS HSM lens good for?
The choice of photography type for which you intend to use the Sigma 50-200mm F4-5.6 DC OS HSM is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
Reasons to Buy the Sigma 50-200mm F4-5.6 DC OS HSM Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 50-200mm F4-5.6 DC OS HSM lens in a list form to assist you in determining whether it offers the features you need.
| Optical Image Stabilization |
| Autofocus |
| Distance Scale |
| Hood supplied |
| 8 Diaphragm Blades for Smooth Bokeh |
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| No Weather Sealing |
| Lens Extends while zooming |
| Slow Aperture at Tele end |
| Variable Aperture |
Lens Mount
Sigma 50-200mm F4-5.6 DC OS HSM is compatible with cameras that have a Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with the Pentax KAF3 lenses are , and .
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Sigma 50-200mm F4-5.6 DC OS HSM has a maximum diameter of 74mm and a total length of 102mm when not extended. It weighs 420g / 14.8 oz.
Sigma 50-200mm F4-5.6 DC OS HSM has a filter thread of 55mm. Below are links to the filters that we recommend you to consider for your Sigma 50-200mm F4-5.6 DC OS HSM:
You can also check All Pentax KAF Mount Lenses with 55mm Filter Thread Size to find the matching lenses.
Focal Range
Sigma 50-200mm F4-5.6 DC OS HSM has a focal range of 50-200mm and 4.0X zoom ratio which has a 35mm equivalent focal range of 75-300mm when used on a APS-C / DX format camera.
Optical Image Stabilization
The Sigma 50-200mm F4-5.6 DC OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Zoom Method
Sigma 50-200mm F4-5.6 DC OS HSM features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 50-200mm F4-5.6 DC OS HSM has a Max Magnification Ratio of 0.22x with a minimum focusing distance of 1.1m.
Sigma 70-200mm F2.8 EX DG HSM II is the only Telephoto Zoom type Pentax KAF3 mount lens with higher max magnification than the Sigma 50-200mm F4-5.6 DC OS HSM.
Aperture
Sigma 50-200mm F4-5.6 DC OS HSM is a variable aperture lens with a max aperture of f4 and a minimum aperture of f22 at 50mm, and a max aperture of f5.6 and minimum aperture of f32 at 200mm .
| Focal Length |
Max Aperture |
Min Aperture |
|
50mm
|
F4 |
F22 |
|
200mm
|
F5.6 |
F32 |
Optical Formula
Sigma 50-200mm F4-5.6 DC OS HSM's optical formula consists of 14 elements in 10 groups . Special elements used in this design is 1 SLD glass element.
Lens Hood
Sigma 50-200mm F4-5.6 DC OS HSM comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Sigma 50-200mm F4-5.6 DC OS HSM
Here are the 8 most popular comparisons of the Sigma 50-200mm F4-5.6 DC OS HSM amongst Camera Decision readers.
Top Alternatives of Sigma 50-200mm F4-5.6 DC OS HSM Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Sigma 50-200mm F4-5.6 DC OS HSM.
Top Alternatives of Sigma 50-200mm F4-5.6 DC OS HSM in Other Lens Mounts
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