Question 1

Is the Sigma 105mm f/1.4 DG HSM Art sharp at f/1.4?

Accepted Answer

At f/1.4 the lens delivers impressive centre sharpness, though the very edges of the frame are softer — which is typical for any lens at maximum aperture. For portrait work this is rarely a problem: your subject's eyes are sharp while the background melts away. Stopping down to f/2 or f/2.8 brings noticeably more uniform sharpness across the frame.

Question 2

What is the filter size of the Sigma 105mm 1.4 Art?

Accepted Answer

The filter thread is 105mm — one of the largest you'll encounter on a non-fisheye lens. Standard 77mm or 82mm filters won't fit. Budget for 105mm filters if you plan to use ND or polarising glass, as they are significantly more expensive than smaller sizes.

Question 3

How heavy is the Sigma 105mm 1.4 DG HSM Art?

Accepted Answer

It weighs 1,640g, which makes it one of the heaviest short telephoto primes on the market. A sturdy camera strap or a monopod is a practical addition for longer shooting sessions. On Canon EF bodies the balance is manageable, but hand-holding for extended periods will tire most shooters.

Question 4

Does the Sigma 105mm f/1.4 Art have image stabilisation?

Accepted Answer

No, this lens has no optical image stabilisation. At 105mm you'll want to keep your shutter speed at 1/125s or faster when hand-holding to avoid camera-shake blur. In low light, the f/1.4 aperture compensates by letting in significantly more light than stabilised f/2.8 zooms.

Question 5

Is the Sigma 105mm 1.4 Art good for portraits?

Accepted Answer

It's one of the most discussed portrait lenses in its class. The 105mm focal length gives you enough distance to avoid facial distortion, the f/1.4 aperture creates strong subject-background separation, and the 9-blade rounded aperture produces smooth bokeh circles. The 1-metre minimum focus distance works well for tight headshots and three-quarter-length shots.

Question 6

Will this Canon EF version work on mirrorless Canon RF cameras?

Accepted Answer

Yes, with Canon's EF-to-RF mount adapter. Autofocus through the HSM motor continues to function with the adapter, though performance may vary depending on the adapter version and camera body. If you're shooting primarily on an RF-mount body, check Canon's adapter compatibility list for your specific camera before buying.

Question 7

Is buying a used Sigma 105mm f/1.4 Art a good idea?

Accepted Answer

Buying a used or second-hand copy is a smart way to access a premium prime at a lower entry point. Each pre-owned lens on Camera-tweedehands.nl is individually inspected and photographed, and comes with a minimum 12 months warranty. The lens's robust build quality means a well-kept copy can perform identically to a new one. Check the listed condition grade and photos carefully — the large front element and lens hood mount are the areas most prone to cosmetic wear.

Question 8

How does the Sigma 105mm 1.4 compare to the Canon EF 135mm f/2L USM?

Accepted Answer

The Canon EF 135mm f/2L USM is lighter and faster to focus, and its 135mm focal length gives slightly more compression for portraits. The Sigma 105mm f/1.4 edges it out on maximum aperture (f/1.4 vs f/2) and delivers stronger background blur at equivalent distances. Photographers who prioritise the shallowest possible depth of field tend to favour the Sigma; those who want a more compact, snappy-focusing telephoto often prefer the Canon 135mm.

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Sigma 105mm f/1.4 DG HSM Art - Canon EF

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