Sigma

Sigma A00104 72mm Center Pinch Front Lens Cap

Name: Sigma A00104 72mm Center Pinch Front Lens Cap
Brand: Sigma
SKU: A00104

★★★★★4.5 (50 reviews)

A genuine Sigma 72mm center-pinch lens cap built from durable materials to protect your front lens element.

$12.98*$15.95Save 18%

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Sigma A00104 (LCF-72 II) is a genuine Sigma center-pinch front lens cap sized to fit any lens with a 72mm filter thread. Its primary job is simple but essential: protecting the front element of your lens from dust, fingerprints, scratches, and impact when the lens is not in use. The center-pinch mechanism uses two spring-loaded tabs on the face of the cap, allowing you to squeeze and release the cap with one hand. This design is particularly practical because it works even with a lens hood attached—you can reach through the hood opening to pinch the tabs, something that side-pinch or snap-on caps do not accommodate.

Constructed from high-grade molded plastic, the cap is lightweight yet rigid enough to maintain its shape and spring tension through years of regular use. The interior clips grip the inner rim of the 72mm filter thread firmly, resisting accidental dislodging when the lens is stored in a bag or bumped during transport. While it is a Sigma-branded accessory designed to complement Sigma lenses, the standard 72mm thread sizing makes it universally compatible with any 72mm-threaded lens from other manufacturers. It is a reliable, no-frills replacement for a lost or damaged original cap.

Key Features

SUPERIOR PROTECTION - Shields your valuable 72mm lens from dust, scratches, and impacts, preserving image quality and extending its lifespan with robust defense.

SECURE SNUG FIT - Ensures the lens cap stays firmly in place, preventing accidental dislodging while offering peace of mind during active shoots and storage.

HASSLE-FREE INSTALLATION - Quickly attach and detach the cap with its user-friendly design, saving you time and effort when switching between shooting and protecting.

SCRATCH PREVENTION - Guards the lens surface against scratches from keys, debris, and other abrasive materials, maintaining pristine optical clarity for every shot.

PREMIUM MATERIAL QUALITY - Crafted from high-grade materials, this Sigma lens cap offers exceptional durability and reliability, withstanding daily wear and tear.

EXCELLENT VALUE - Provides essential lens protection without compromising on quality, offering an affordable solution to safeguard your investment in Sigma optics.

No further features available.

Specifications

Brand

Sigma

Model

A00104 (LCF-72 II)

Size

72mm

Type

Center Pinch Front Lens Cap

Material

High-Grade Molded Plastic

Compatibility

Any lens with 72mm filter thread

Pros & Cons

👍 Pros

Center-pinch design allows removal and attachment with a lens hood still in place
Genuine Sigma-manufactured part ensures consistent fit and finish with Sigma lenses
Durable construction withstands daily handling, bag jostling, and repeated attachment cycles
Spring-loaded clips provide a snug grip that resists accidental dislodging during transport
Compatible with any 72mm filter thread lens, not limited to Sigma optics

👎 Cons

Does not include a lens cap keeper string or built-in tether to prevent loss
Plain black design with no textured grip area, which can be slippery with wet or gloved hands
Only available in 72mm size, so multi-lens kits with different thread sizes require separate caps
No dust seal or gasket around the rim, so fine particles can still reach the lens surface in dusty environments

Frequently Asked Questions

Will the Sigma A00104 lens cap fit non-Sigma lenses with a 72mm filter thread?

Yes. Any lens with a 72mm front filter thread will accept this cap, regardless of the lens brand. The center-pinch mechanism grips the inner rim of the filter thread.

How does the center-pinch design work compared to a side-pinch lens cap?

You squeeze two tabs in the center of the cap to release the spring clips, then lift it off. This design allows you to attach or remove the cap even when a lens hood is mounted, which is not possible with side-pinch caps that require access to the outer rim.

Does this Sigma lens cap include a keeper string or leash attachment point?

The cap does not include a keeper string. However, it has a small slot on the rim that is compatible with aftermarket lens cap leashes if you want to tether it to your lens or camera strap.

Is this an original Sigma part or a third-party replacement?

This is a genuine Sigma lens cap (model LCF-72 II / A00104), manufactured by Sigma to match their lens lineup. It carries the Sigma branding on the face of the cap.