User manual
Pentax HD Pentax DA 20-40mm f

User Manual for Pentax HD Pentax DA 20-40mm f 2.8-4 ED Limited DC WR Lens

• Product category: SLR Lenses Pentax
• Brand: Pentax
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Pentax SLR Lenses

Product description

30.5 to 61.5mm Focal Length Equivalency and f/2.8 Maximum Aperture
• With its 2x zoom coverage of 20-40mm, this lens offers focal length coverage from 30.5 to 61.5mm in the 35mm format when mounted on a PENTAX K-series DSLR. This covers a practical set of frequently used focal lengths and is ideal as a versatile everyday lens. Its maximum aperture of f/2.8 at the wide-angle end of the zoom is effective in low light and provides shallow depth of field focus.

HD Lens Coating
• This lens has been treated with the PENTAX-developed HD coating, a high grade, multi-layer coating that reduces unwanted reflection, allowing the user to capture high-contrast images free of flare and ghosting.

DC Autofocus Motor
• Shoot discreetly with in-lens, direct current (DC) Auto Focus motor operation for smooth & quiet performance.

Quick-Shift Focus System
• The Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.

Weather-Resistant Construction and Durable Aluminum Barrel
• With seven special seals to prevent intrusion of water, moisture and dust, this is the first lens of the "Limited" series to feature the PENTAX-original weather-resistant construction. With a handsome and durable aluminum alloy barrel and weather-sealing, this lens is able to perform in almost any shooting condition.

SP Lens Coating
• The PENTAX SP (Super Protect) coating on the front and rear lens elements repels dust, water and grease to keep your lens clean and your images sharp.

Optical Design
• The ED (Extra-low Dispersion) glass and a super-low dispersion glass element in this lens' optics deliver clear, high resolution imagery with edge-to-edge sharpness, throughout the entire zoom range.

Rounded Diaphragm Blades
• Enhanced with a rounded nine-blade diaphragm at the wide apertures for optimal optical performance and gorgeous bokeh effects.

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Technical parameters

Pentax DA 20-40mm f/2.8-4 ED Limited DC WR Specs

Focal Length	20 to 40mm (35mm Equivalent Focal Length: 30.5 to 61.5mm)
Maximum Aperture	f/2.8 to 4
Minimum Aperture	f/22 to 32
Lens Mount	Pentax K
Format Compatibility	APS-C
Angle of View	70 Rating 96% users recommend this product to others. And what about you? This product has already been rated by 46 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR