Sigma 70-300mm F4-5.6 DG OS is a Variable aperture Auto Focus (AF)
Telephoto Zoom lens with Optical Image stabilization and 35mm FF max sensor coverage, and it is designed to be used with
A Mount cameras.
What type of photography is the Sigma 70-300mm F4-5.6 DG OS lens good for?
The type of photography that you are planning to use the Sigma 70-300mm F4-5.6 DG OS is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Lenses in Sony Alpha Mount with Same Focal and Aperture Range
Reasons to Buy Sigma 70-300mm F4-5.6 DG OS Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 70-300mm F4-5.6 DG OS lens in a list form to help you determine whether it offers the features you need.
| Optical Image Stabilization |
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Covers Full-Frame Sensor |
| 9 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 70-300mm F4-5.6 DG OS is compatible with cameras that have a Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Sigma 70-300mm F4-5.6 DG OS is also available in Canon EF , Nikon F (FX), Pentax KAF3 and Sigma SA mounts.
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Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 70-300mm F4-5.6 DG OS has a maximum diameter of 77mm and total length of 126mm when not extended. It weighs 610g / 21.5 oz.
Sigma 70-300mm F4-5.6 DG OS has a filter thread of 58mm. Below are links to the filters that we recommend you to consider for your Sigma 70-300mm F4-5.6 DG OS:
Focal Range
Sigma 70-300mm F4-5.6 DG OS has a focal range of 70-300mm and 4.3X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 105 - 450mm.
Optical Image Stabilization
The Sigma 70-300mm F4-5.6 DG OS features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Zoom Method
Sigma 70-300mm F4-5.6 DG OS 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 70-300mm F4-5.6 DG OS has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 1.5m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Telephoto Zoom type Sony Alpha mount lens alternatives with highest max magnification ratios:
Aperture
Sigma 70-300mm F4-5.6 DG OS is a variable aperture lens with a max aperture of f4 and a minimum aperture of f22 at 70mm, and a max aperture of f5.6 and minimum aperture of f32 at 300mm .
| Focal Length |
Max Aperture |
Min Aperture |
|
70mm
|
F4 |
F22 |
|
300mm
|
F5.6 |
F32 |
Optical Formula
Sigma 70-300mm F4-5.6 DG OS's optical formula consists of 16 elements in 11 groups . Special elements used in this design is 1 SLD glass element.
Lens Hood
Sigma 70-300mm F4-5.6 DG OS comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Sigma 70-300mm F4-5.6 DG OS
Here are the eight most popular comparisons of the Sigma 70-300mm F4-5.6 DG OS amongst Camera Decision readers.
Top Alternatives of Sigma 70-300mm F4-5.6 DG OS Lens
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