Sigma's 50-120mm F2.8 Makes the Best Case for APS-C in Years

APS-C cameras have always promised less weight. Then you mount a big fast telephoto lens and the kit weighs about the same as full frame. Well Sigma just lightened the load and they’re taking preorders now. 

The new 50-120mm F2.8 DC OS Contemporary is a constant-aperture telezoom for Sony E, Fujifilm X and Canon RF. It weighs 390 grams, costs $799 and ships October 22. 

Alongside it, Sigma announced a Nikon Z version of its 16-300mm F3.5-6.7 DC OS Contemporary, a lens that first arrived in 2025 for other mounts. This one lands November 5 at $769.  

One lens built for speed, one built for everything. Let’s take a look at both.

The Specs at a Glance

Specification	50-120mm F2.8 DC OS	16-300mm F3.5-6.7 DC OS (Nikon Z)
Status	New lens	New Nikon Z version of a 2025 design
Mounts	Sony E, Fujifilm X, Canon RF	Nikon Z (also L, RF, X, E)
Full-frame equivalent	75-180mm (E, X), about 80-192mm (RF)	24-450mm
Maximum aperture	Constant f/2.8	f/3.5 to f/6.7
Stabilization (Sigma, CIPA rated	6.5 stops at 50mm, 4.5 at 120mm	6 stops at 16mm, 4.5 at 300mm
Autofocus	HLA linear motor	HLA linear motor, Z-specific control
Minimum focus	23cm wide, 55cm tele	17cm wide, 105cm tele
Maximum magnification	1:3 wide, 1:4.7 tele	1:2 at 70mm, 1:3 wide, 1:4 tele
Optical design	18 elements in 13 groups	20 elements in 14 groups
Aperture blades	11, rounded	9, rounded
Filter	55mm	67mm
Size	66.8 x 99mm (E), 66.8 x 99.3mm (X), 69 x 97mm (RF)	73.8 x 125.4mm
Weight	390g (E, X), 410g (RF)	630g
Weather sealing	Dust and splash resistant, repellent front coating	Dust and splash resistant, repellent front coating
Price and ship date	$799, October 22, 2026	$769, November 5, 2026

The APS-C Lens We’ve Been Looking For?

Sony and Canon each sell APS-C bodies with NO native constant-f/2.8 telezooms to go with the cameras. Fujifilm makes one, the XF 50-140mm F2.8, and it’s excellent. It’s also 995 grams and $1,899.95.

Sigma’s new lens weighs 390 grams in E and X mount and measures about 99mm long. That’s smaller than lots of other standard zooms.

A quick word about crop factor: Multiply by the crop factor and the 50-120mm frames like a 75-180mm on Sony and Fujifilm (1.5x crop), or about 80-192mm on Canon (1.6x crop). 

That crop factor number describes how to think about the field of view. 

Exposure is fast and stays at f/2.8, which is wonderful in a dark gym or reception hall.

A Three-Lens Kit Under a Kilogram

Here’s where the story gets smaller.  Sigma now has three APS-C f/2.8 zooms that cover 10mm to 120mm, about 15-180mm equivalent. In E mount, they add up to 935 grams.

Lens	Equivalent (1.5x)	Weight (E mount)	Filter	Worth knowing
10-18mm F2.8 DC DN	15-27mm	255g	67mm	Unstabilized
18-50mm F2.8 DC DN	27-75mm	290g	55mm	Unstabilized, no aperture ring
50-120mm F2.8 DC OS	75-180mm	390g	55mm	Stops short of 200mm equivalent
Total	15-180mm	935g

You can carry all three for less than Fujifilm’s single 50-140mm. That’s awesome if you’re trying to build a lightweight kit. 

The set has a few quirks. Only the 50-120mm has stabilization and an aperture ring, and the ultra-wide takes a 67mm filter while the other two share 55mm. It’s a great optical kit with slightly mismatched controls.

What the 50-120mm Does Well

• Size for speed. Constant f/2.8 telephoto in a 390g package.
• Price. $799 is less than half the list price of Fujifilm’s 50-140mm.
• Stabilization. Sigma rates it at 6.5 stops wide and 4.5 stops long. That’s a big deal on the Canon R10 and R50, which lack in-body stabilization.
• Autofocus. HLA stands for High-response Linear Actuator, a linear motor that drives focus quickly and quietly. DPReview’s early hands-on found it swift and reliable, though demanding sports testing is still ahead.
• Hybrid friendly. Sigma says focus breathing (the shift in framing as you rack focus) stays minimal, and the physical aperture ring gives direct exposure control.
• Close focus. 23cm at 50mm gives 1:3 magnification. Fujifilm’s 50-140mm tops out at 0.12x.
• Shared filters. Same 55mm thread as the 18-50mm F2.8.
• Weather resistance. Dust and splash resistant, with a water- and oil-repellent front element. Sigma stops short of calling it waterproof.

The Trade-offs

• Reach. 180mm equivalent on Sony and Fujifilm falls short of a classic 70-200mm.
• Wide end. 75mm equivalent (80mm on Canon) can feel tight in cramped venues and courtside.
• Extending barrel. DPReview reports it grows about 25% at full zoom. Pro telezooms zoom internally, and the shifting balance means rebalancing on a gimbal.
• Fewer switches. AF/MF and stabilization settings live in your camera menu.
• Click-only aperture ring. Sigma lists no de-click switch, so smooth exposure pulls in video are out.
• Tripod collar. Sigma skips one. At 390g, most people won’t need it.
• Mounts. Nikon Z and L-Mount versions are absent at launch.
• Teleconverters. Sigma leaves this lens off its compatibility list, so consider 120mm as the top focal length.
• Close-focus corners. DPReview saw soft, swirly corners on flat subjects near minimum focus at 50mm, while overall sharpness looked strong. Call that preliminary until production samples get tested.
• Depth of field. At matched framing, f/2.8 on APS-C looks like about f/4.2 on full frame (f/4.5 on Canon). You get f/2.8 exposure with a little less background blur.

A strong fit

• Canon shooters gain the most. R7, R10 and R50 owners had no native constant-f/2.8 telezoom at all, and the built-in stabilization matters even more on bodies without IBIS.
• For portrait and headshot photographers who want compression without a full-frame 70-200
• Wedding and event shooters running two APS-C bodies, if 75mm is wide enough for the room
• Indoor and youth sports photographers on Sony, Fujifilm or Canon
• Hybrid creators building lightweight rigs
• Travel and street photographers who want telephoto compression in a smaller kit
• Fujifilm shooters who value weight and price over the 50-140mm’s extra reach and pro build

Better served elsewhere

• Field sports and wildlife specialists who need more than 180mm equivalent
• Full-frame owners, since this DC lens covers an APS-C image circle
• Pros who need internal zoom, a tripod collar or teleconverter support

How It Stacks Up

Lens	Format	Equivalent range	Weight	Length	Price	Main advantage
Sigma 50-120mm F2.8 DC OS	APS-C	75-180mm (E, X), 80-192mm (RF)	390-410g	97-99.3mm	$799	Portability and value
Fujifilm XF 50-140mm F2.8 OIS WR	APS-C	76-213mm	995g	175.9mm	$1,899.95	Reach, internal zoom, pro handling
Tamron 70-180mm F2.8 G2	Full frame	70-180mm	855g (E), 865g (Z)	156.5mm	About $1,099	Full-frame coverage, strong close focus

Against the Fujifilm, the Sigma is about 61% lighter and $1,100 cheaper. It gives up 20mm, internal zooming, a tripod collar and teleconverter support. Call it the first credible lightweight alternative.

Nikon Z Gets the 16-300mm

Nikon shooters, your lens is the opposite philosophy. The 16-300mm F3.5-6.7 DC OS uses the same optics Sigma released for other mounts in 2025. What’s new is the mount. It’s Sigma’s first Z-mount zoom, with AF-C support, in-camera aberration correction and a focus algorithm tuned for Nikon Z.

The range is the real deal: 24-450mm equivalent in one weather-resistant lens. Interiors, landscapes, portraits, field sports, zoo animals and aircraft, very versatile – all without a lens change.

Nikon’s Z DX 18-140mm starts at 27mm equivalent. The Sigma starts at 24mm, a small but noticeable difference in a small room or a tight city street. It also reaches more than twice as far. 

The cost is weight: 630g against the Nikon’s 315g.

• Close-up ability. 1:2 at 70mm, 1:3 wide and 1:4 at 300mm.
• Autofocus. Independent reviews found the HLA motor quick and reliable for everyday action and wildlife.
• Stabilization. Sigma rates it at 6 stops wide and 4.5 long, useful on DX bodies that lean on lens stabilization.
• Image quality. Fstoppers found sharpness outstanding at 16mm, even wide open, with the biggest drop around 150mm.
• Travel details. Weather resistant, 125.4mm long, with a zoom lock and suppressed focus breathing for video.

The trade-offs are classic superzoom:

• The aperture slows fast and ends at f/6.7, so expect higher ISOs in dim light.
• Corners stay soft. PetaPixel saw corner blur at 16mm, and Fstoppers found soft corners at 300mm at every aperture.
• Expect barrel distortion wide and pincushion through the middle of the range, so lens profiles matter.
• Bokeh is busy. PetaPixel saw soap-bubble highlights and onion rings, and called bokeh the lens’s weak point.
• The 1:2 setting is useful, with softer detail at the closest distances. PetaPixel also found you’re about an inch from the front element, which can cast a shadow on your subject.
• PetaPixel flagged that the zoom lock can engage by accident.

It’s built for family and travel photographers, hikers, daylight field sports, zoo and aviation shooters, and Z50-series, Z fc and Z30 owners who want the widest native range. 

Low-light sports and stage photographers, corner-critical landscape shooters and portrait specialists will do better with faster glass.

Price and Availability

• 50-120mm F2.8 DC OS Contemporary: $799 (€799 in Europe), ships October 22, 2026, in Sony E, Fujifilm X and Canon RF. Preorders are open at B&H.
• 16-300mm F3.5-6.7 DC OS Contemporary for Nikon Z: $769, ships November 5, 2026.

Two Ways to Travel Light

Sigma just offered two ways to pack light. One is a fast three-lens kit that weighs less than a single pro telezoom. The other is one lens that covers almost everything and keeps the dust out of your sensor.

Both lenses give APS-C a complete system worth building around. 

Pick what fits how you work, and go find some light.

Sources

• Sigma: 50-120mm F2.8 DC OS Contemporary product page
• DPReview: Sigma’s 50-120mm F2.8 OS DC is an APS-C legend in the making, for just $799
• PetaPixel: Sigma 50-120mm f/2.8 Contemporary Review: You’ll Want to Take This Lens Everywhere
• PetaPixel: The Sigma 50-120mm f/2.8 Completes Its Ultra-Compact APS-C Trinity
• PetaPixel: Sigma 16-300mm f/3.5-6.7 DC OS Review: A Long-Awaited Return
• CineD: SIGMA 16-300mm f/3.5-6.7 DC OS Contemporary for Nikon Z Mount Announced
• B&H Explora: Sigma Announces Compact 50-120mm f/2.8, Brings 16-300mm to Z Mount
• Sigma: 16-300mm F3.5-6.7 DC OS Contemporary original announcement (2025)
• Fstoppers: Versatile Zoom, Real-World Tradeoffs: A Review of the Sigma 16-300mm f/3.5-6.7 DC OS Contemporary Lens