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Rubber protective cover for Sigma 105mm lens tripod socket

SIGMA

SIGMA Protective Cover PT-21 for 105mm Lenses camera accessory

SKU CH-DDWX-3W2QY

Protective cover shields 105mm lens tripod socket from dust, scratches and impacts

  • Shields 105mm lens from dust and scratches with superior protection
  • Robust construction resists daily wear for enhanced durability
  • Weather-resistant design guards against moisture and debris outdoors
  • Engineered specifically for Sigma 105mm lenses ensuring perfect fit
  • Rubber ring protects lens tripod socket rollers from damage

Purpose-built protection for 105mm lenses

The SIGMA PT-21 protective cover is made for photographers who own a compatible 105mm lens and want to shield the tripod socket rollers from dust, scratches and impacts. It slips over the mount area to preserve the optical surfaces and mechanical parts during transport, storage or outdoor work.

Rubber construction with a snug fit

A rubber ring forms the cover, giving a tactile, non-slip surface that resists daily wear and tear. The design is engineered specifically for the 105mm fitting, so it stays securely in place without accidental dislodging when the lens is moved or packed.

Weather resistance for outdoor use

The cover withstands moisture and debris, letting you keep shooting in damp or dusty conditions without exposing the socket rollers. No power draw, no noise and no thermal concerns — it is a passive accessory that simply stays on the lens until you remove it.

How it compares

Measured against everything we stock in Camera Extras & Accessory Packs, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 66% of the 2,266 comparable items (median $39.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the PT-21 cover protect the tripod socket rollers on my 105mm lens?

Yes, the rubber ring design shields the tripod socket rollers from dust and damage during use or storage.

Will the PT-21 fit tightly on my Sigma 105mm lens without slipping off?

It is engineered specifically for Sigma 105mm lenses, giving a snug, secure attachment that resists accidental dislodging.

How do I install the PT-21 cover and what mistake should I avoid?

Stretch the rubber ring over the lens barrel and seat it fully over the tripod socket rollers; the common error is leaving the rollers partially exposed.

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