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Pentax 31526 49mm Front Lens Cap — main product image
Pentax

Pentax 31526 49mm Front Lens Cap

★★★★★4.7 (134 reviews)

Genuine Pentax 49mm front lens cap designed to fit DA 50-200mm WR and D-FA 100mm Macro WR lenses.

$8.21*$9.95Save 17%
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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 Pentax 31526 49mm Front Lens Cap is a genuine OEM accessory built to protect the front element of compatible Pentax lenses. Designed specifically for the DA 50-200mm WR and D-FA 100mm Macro WR, this cap snaps firmly onto the 49mm filter thread to shield the glass from dust, moisture, scratches, and accidental contact when the lens is not in use. At just 0.32 ounces and roughly 3 by 3.5 inches in dimension, it adds virtually no weight or bulk to your kit.

While aftermarket lens caps are widely available, opting for the genuine Pentax cap ensures a factory-spec fit that won't slip off unexpectedly during transport. This is especially important for weather-resistant lenses like the DA 50-200mm WR, where a secure cap helps keep the front element clean and ready for shooting in challenging conditions. It is a simple but essential accessory for any Pentax shooter who wants to keep their glass in top condition.

Key Features

Product description : Pentax 31526

Product type : front lens cap

Compatible with: front lens cap (49 mm) for DA 50-200 mm WR, D-FA 100 mm Macro WR

Specifications

Brand
Pentax
Model
31526
Type
Front Lens Cap
Diameter
49mm
Compatibility
DA 50-200mm WR, D-FA 100mm Macro WR
Dimensions
3 x 0.2 x 3.5 inches
Weight
0.32 ounces

Pros & Cons

👍 Pros

  • Genuine Pentax accessory ensures precise fit on compatible lenses.
  • Extremely lightweight at 0.32 ounces, adding no meaningful bulk.
  • Protects the front element from dust, fingerprints, and scratches when not shooting.
  • Compact and slim profile at just 0.2 inches thick for easy storage.

👎 Cons

  • Only fits 49mm thread lenses, so it cannot be shared across lenses with different filter sizes.
  • Compatible with just two specific Pentax lens models, limiting versatility.
  • No built-in leash or tether, so it can be easily lost in the field.
  • Plain snap-on design with no rubberized grip, which may make removal tricky with cold fingers.

Frequently Asked Questions

It is designed for Pentax DA 50-200mm WR and D-FA 100mm Macro WR lenses with a 49mm filter thread.
It is a snap-on front lens cap that clips onto the front of the lens via a center-pinch or side-pinch mechanism.
While it is sized at 49mm, it is specifically designed for Pentax lenses. It may physically fit other 49mm lenses, but Pentax only guarantees compatibility with its own listed models.
It weighs just 0.32 ounces, making it virtually unnoticeable in a camera bag.

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