Sigma 100-400mm F5-6.3 OS is a Variable aperture Auto Focus (AF)
Super Telephoto Zoom lens with Optical Image stabilization and 35mm FF max sensor coverage, and it is designed to be used with
L Mount cameras.
What type of photography is the Sigma 100-400mm F5-6.3 OS lens good for?
The type of photography that you are planning to use the Sigma 100-400mm F5-6.3 OS is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Lenses in Leica L Mount with Same Focal and Aperture Range
Sigma 100-400mm F5-6.3 OS is a member of Sigma's Contemporary series of lenses. Below you can see the latest lenses in this series.
Contemporary Series Lenses in Leica L Mount
Reasons to Buy Sigma 100-400mm F5-6.3 DG DN OS Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 100-400mm F5-6.3 DG DN OS lens in a list form to help you determine whether it offers the features you need.
| Optical Image Stabilization |
| Weather-sealed |
| Autofocus |
| Distance Scale |
| Compatible with Sigma Teleconverters |
| Hood supplied |
| Tripod Collar |
| Full-time Manual Focusing |
| Focus Distance Limiter |
| Zoom Lock |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
| 400mm reach great for Wildlife Photography |
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| Lens Extends while zooming |
| Slow Aperture at Wide end |
| Slow Aperture at Tele end |
| Variable Aperture |
| Heavy |
Lens Mount
Sigma 100-400mm F5-6.3 OS is compatible with cameras that have a Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
Sigma 100-400mm F5-6.3 OS is also available in Sony E and Fujifilm X 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 100-400mm F5-6.3 OS has a maximum diameter of 86mm and total length of 197mm when not extended. It weighs 1135g / 40.0 oz.
Below you can find a scaled side-by-side image of Sigma 100-400mm F5-6.3 OS and Leica SL 100-400 f5-6.3 (Leica L mount) to get a better idea of how their sizes compare in real life. Check the detailed comparison of these two lenses here.
Comparison image of the Sigma 100-400mm F5-6.3 OS and the Leica SL 100-400 f5-6.3 Size and Weight
![https://cameradecision.com/lenses/img/other/Sigma-100-400mm-F5-6.3-DG-DN-OS-Leica-SL-inhand.jpg]()
Sigma 100-400mm F5-6.3 OS Size
Sigma 100-400mm F5-6.3 OS has a filter thread of 67mm. Below are links to the filters that we recommend you to consider for your Sigma 100-400mm F5-6.3 OS:
Focal Range
Sigma 100-400mm F5-6.3 OS has a focal range of 100-400mm and 4.0X zoom ratio.
Teleconverter Compatibility
Sigma 100-400mm F5-6.3 OS is compatible with the Teleconverters below. With the use of these TC/extenders, you can find how the total focal reach and effective aperture of your Sigma 100-400mm F5-6.3 OS changes below:
Sigma 100-400mm F5-6.3 OS Focal Range and Aperture Change with Teleconverter
Weather Sealings
The Sigma 100-400mm F5-6.3 OS is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Sigma 100-400mm F5-6.3 OS with a weather-sealed camera body such as the Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
Optical Image Stabilization
The Sigma 100-400mm F5-6.3 OS features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Tripod Collar
With a total length of 197mm and a weight of 1135g, the Sigma 100-400mm F5-6.3 OS is a large lens. Fortunately, it comes with a tripod collar which you can use to attach the lens directly to a tripod or monopod instead of attaching the camera. This connection helps to better balance the lens/kit combination.
Zoom Method
Sigma 100-400mm F5-6.3 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.
![https://cameradecision.com/lenses/img/other/Sigma-100-400mm-F5-6.3-DG-DN-OS-Leica-SL-extended.jpg]()
Sigma 100-400mm F5-6.3 OS Extended State
Zoom Lock
Sigma 100-400mm F5-6.3 OS has a Zoom lock feature which eliminates Zoom creep where focal length of the lens changes with gravity when it's held downwards or upwards.
Maximum Magnification Ratio
Sigma 100-400mm F5-6.3 OS has a Max Magnification Ratio of 0.24x and has a minimum focusing distance of 1.1m.
Below are the 3 Super Telephoto Zoom type Leica L mount lens alternatives with highest max magnification ratios:
Aperture
Sigma 100-400mm F5-6.3 OS is a variable aperture lens with a max aperture of f5 and a minimum aperture of f22 at 100mm, and a max aperture of f6.3 and minimum aperture of f29 at 400mm .
| Focal Length |
Max Aperture |
Min Aperture |
|
100mm
|
F5 |
F22 |
|
400mm
|
F6.3 |
F29 |
Optical Formula
Sigma 100-400mm F5-6.3 OS's optical formula consists of 22 elements in 16 groups . Following special elements are used in this design:
Lens Hood
Sigma 100-400mm F5-6.3 OS comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
![https://cameradecision.com/lenses/img/other/Sigma-100-400mm-F5-6.3-DG-DN-OS-Leica-SL-hood.jpg]()
Sigma 100-400mm F5-6.3 OS Lens Hood
Body Colour
Sigma 100-400mm F5-6.3 OS is available in Black color.
![https://cameradecision.com/lenses/img/other/Sigma-100-400mm-F5-6.3-DG-DN-OS-Leica-SL-withcamera.jpg]()
Sigma 100-400mm F5-6.3 OS Attached to a camera
Popular Comparisons of Sigma 100-400mm F5-6.3 OS
Here are the eight most popular comparisons of the Sigma 100-400mm F5-6.3 OS amongst Camera Decision readers.
Top Alternatives of Sigma 100-400mm F5-6.3 OS Lens
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