The Pentax SMC DA 200mm f/2.8 ED [IF] SDM is a high-performance telephoto prime lens designed for Pentax APS-C format DSLR cameras, though it is also full-frame compatible. With a bright f/2.8 aperture, it excels in sports, wildlife, and portrait photography, offering sharp image quality and fast autofocus.

Key Features:

• Optical Construction: 9 elements in 8 groups, including extra-low dispersion (ED) glass to minimize chromatic aberrations.
• Autofocus System: Features Supersonic Drive Motor (SDM) for smooth and silent autofocus, with Quick-Shift Focus for manual fine-tuning.
• Weather Resistance: AW (All-Weather) sealing protects against dust and moisture, ensuring durability in challenging environments.
• Internal Focusing (IF): The lens maintains its length while focusing, improving handling and balance.
• Super Multi-Coating (SMC) & Super Protect (SP) Coating: Reduces flare and ghosting while repelling water, dust, and grease.
• Rounded 9-Blade Diaphragm: Produces smooth and natural bokeh for artistic depth-of-field effects.
• Filter Compatibility: Accepts 77mm filters, with a deep lens hood for glare reduction.

This lens is a premium telephoto prime, offering exceptional sharpness, fast aperture, and professional-grade weather sealing, making it a great choice for action, wildlife, and portrait photographers. 

Specifications for the Pentax SMC DA 200mm f/2.8 ED [IF] SDM: