Does the Sigma 100-400mm f/5-6.3 DG DN OS take a teleconverter?

L-Mount · 100-400mm f/5-6.3 · thread and mount data verified 2026-08-29

2 teleconverters are supported. A teleconverter multiplies the focal length and costs you light — and on a crop body the framing multiplies again.

Both converters are supported and both stay usable: 140-560mm at f/7.1-9 with the 1.4x, 200-800mm at f/10-13 with the 2x. On a lens this fast the 2x is the unusual case of a 2x that does not cost you autofocus.

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which lenses we compare.

Teleconverter	Supported	Reach	Max aperture	On APS-C	On Micro Four Thirds
Sigma TC-1411	Yes — Firmware of both lens and TC must be updated. Becomes 140-560mm F7-9.	140-560mm	f/7.1-9	210-840mm	—
Sigma TC-2011	Yes — Firmware of both lens and TC must be updated. Becomes 200-800mm F10-12.6.	200-800mm	f/10-13	300-1200mm	—

At f/10-13 some older bodies restrict autofocus to the centre point.

What each converter gives you

Sigma TC-1411 — 140-560mm at f/7.1-9 on this lens, autofocus retained.

Sigma TC-2011 — 200-800mm at f/10-13 on this lens, autofocus retained.

The lens itself: Sigma 100-400mm f/5-6.3 DG DN OS · every L-Mount lens: L-Mount lens index · all teleconverter compatibility

Compatibility sourced from the manufacturers' own published teleconverter compatibility statements (manufacturer teleconverter compatibility statements (Sony, Canon USA, Nikon, Fujifilm, Sigma, Panasonic, OM System) — each row carries its own source URL) and verified 2026-08-29. Reach and aperture figures are computed from the lens's own published focal length and maximum aperture — a 1.4x multiplies focal length by 1.4 and costs 1 stop; a 2x multiplies by 2 and costs 2 stops. Lenses whose compatibility we could not verify from a manufacturer statement are omitted rather than guessed. Methodology