Question 1

Does the Sigma 17-50mm f/2.8 EX DC OS HSM work on a Nikon Z mirrorless camera?

Accepted Answer

Technically yes, but with trade-offs. You need a Nikon FTZ or FTZ II adapter to mount this Nikon F lens on a Z-series body. On a full-frame Nikon Z camera it will only shoot in DX crop mode, reducing resolution significantly. It works best on an APS-C Nikon F DSLR, which is what it was designed for. If you're moving to Nikon Z mirrorless, it's worth considering a native Z-mount lens instead.

Question 2

Is the f/2.8 aperture really constant across the full 17-50mm zoom range?

Accepted Answer

Yes — f/2.8 is maintained from 17mm all the way to 50mm. This is a big practical advantage over variable-aperture kit zooms, because your exposure settings and depth of field stay consistent as you zoom. It means you don't need to bump ISO when you zoom in, which matters in venues with tricky lighting like reception halls or churches.

Question 3

How close can the Sigma 17-50mm 2.8 focus?

Accepted Answer

The minimum focus distance is 0.28m — that's just under 30cm from the sensor plane. At 50mm and f/2.8, getting that close lets you isolate small subjects with a nicely blurred background, which is more than you'd expect from a standard zoom. It makes this lens genuinely useful for product detail shots and close environmental portraits.

Question 4

Is the image stabilisation (OS) useful at these focal lengths?

Accepted Answer

More than you'd think. On an APS-C sensor, 50mm is equivalent to about 75mm — long enough that camera shake becomes visible at slower shutter speeds. The optical stabiliser helps when you're shooting handheld in dim light without wanting to push ISO too high. It's especially handy for travel and indoor event photography where a tripod isn't practical.

Question 5

Is buying a used Sigma 17-50mm f/2.8 EX DC OS HSM a safe choice?

Accepted Answer

It's a well-built lens with EX (Excellence) series construction, so used copies tend to hold up well mechanically. When buying second-hand, check that the HSM autofocus is snappy and that the OS engages smoothly. All used lenses on Camera-tweedehands.nl are individually inspected and come with a minimum 12 months warranty, so you're covered if anything turns up after purchase. It's one of the more reliable second-hand buys in this category.

Question 6

What filter size does the Sigma 17-50mm f/2.8 EX DC OS HSM take?

Accepted Answer

It uses a 77mm filter thread — the same size as many professional zoom lenses. That's larger than average for an APS-C lens, but the upside is you can share filters (ND, circular polariser) with other 77mm lenses you might already own, like the Nikon AF-S DX NIKKOR 17-55mm f/2.8G IF-ED. Keep in mind the front element does not rotate during autofocus, which makes using polarising filters much easier.

Mount	Nikon F
Focal range	Ultra Wide-Angle
Prime / Zoom	Zoom
Focal length (min)	17 mm
Focal length (max)	50 mm
Max. aperture	f/2.8
Stabilisation
Weight (Grams)	565
Year of release	2010
Auto Focus

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Sigma 17-50mm f/2.8 EX DC OS HSM - Nikon F

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About the Sigma 17-50mm f/2.8 EX DC OS HSM - Nikon F

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