Sigma 50-100mm F1.8 A is a Fixed aperture Auto Focus (AF)
Telephoto Zoom lens with APS-C / DX max sensor coverage, and it is designed to be used with
SA Mount cameras.
What type of photography is the Sigma 50-100mm F1.8 A lens good for?
The type of photography that you are planning to use the Sigma 50-100mm F1.8 A is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Sigma 50-100mm F1.8 A is a member of Sigma's Art series of lenses. Below you can see the latest lenses in this series.
Art Series Lenses in Sigma SA Mount
Reasons to Buy Sigma 50-100mm F1.8 DC HSM Art Lens
Here we've included a summary of the advantages and disadvantages of the Sigma 50-100mm F1.8 DC HSM Art lens in a list form to help you determine whether it offers the features you need.
| Autofocus |
| Hood supplied |
| Internal Focusing |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f1.8 aperture throughout the range |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 50-100mm F1.8 A from Amazon or B&H PHOTO
Lens Mount
Sigma 50-100mm F1.8 A is compatible with cameras that have a Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma SD1 Merrill, Sigma SD1 and .
Sigma 50-100mm F1.8 A is also available in Canon EF and Nikon F (DX) mounts.
Check Our latest Video Lens Review - Don't forget to Subscribe!
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 50-100mm F1.8 A has a maximum diameter of 94mm and total length of 171mm. It weighs 1490g / 52.6 oz.
Sigma 50-100mm F1.8 A has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 50-100mm F1.8 A:
Focal Range
Sigma 50-100mm F1.8 A has a focal range of 50-100mm and 2.0X zoom ratio which has a 35mm equivalent focal range of 75-150mm when used on a APS-C / DX format camera.
Optical Image Stabilization
Sigma 50-100mm F1.8 A doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Zoom Method
Sigma 50-100mm F1.8 A features Rotary (internal) zoom method where the length of the lens doesn't change while you are zooming in or out. Even though this design has a size disadvantage in general compared to extending designs, it has the benefits of better sealing against dust and moisture, no zoom creep and no weight balance shift while zooming.
Maximum Magnification Ratio
Sigma 50-100mm F1.8 A has a Max Magnification Ratio of 0.15x and has a minimum focusing distance of 0.95m. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.
Below are the 3 Telephoto Zoom type Sigma SA mount lens alternatives with highest max magnification ratios:
Aperture
Sigma 50-100mm F1.8 A is a fixed aperture lens with a constant max aperture of f1.8 from 50mm all the way to the 100mm .
| Focal Length |
Max Aperture |
Min Aperture |
|
50mm
|
F1.8 |
F16 |
|
100mm
|
F1.8 |
F16 |
Optical Formula
Sigma 50-100mm F1.8 A's optical formula consists of 21 elements in 15 groups . Following special elements are used in this design:
- Three FLD
- one SLD
- one HRI elements
Lens Hood
Sigma 50-100mm F1.8 A comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Sigma 50-100mm F1.8 A is available in Black color.
Popular Comparisons of Sigma 50-100mm F1.8 A
Here are the eight most popular comparisons of the Sigma 50-100mm F1.8 A amongst Camera Decision readers.
Top Alternatives of Sigma 50-100mm F1.8 A Lens
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate, I earn from qualifying purchases.