Pentax's telephoto for 645 system — 200mm f/4 for medium format portrait and nature work.
The Pentax-A 645 200mm f/4 is a telephoto prime for Pentax's 645 medium format system — providing approximately 125mm equivalent on 645 format. The A designation indicates compatibility with programmed auto exposure.
Optically good — 200mm on 645 provides moderate telephoto compression at approximately 125mm equivalent. The f/4 is adequate. The 645 format provides significantly more detail than 35mm at the same perspective.
Pentax 645 mount. A-series — program auto compatible. 200mm at f/4. Manual focus with the A-series auto exposure compatibility. The 645 system provides practical medium format handling.
Available used at budget to mid-range prices. The Pentax 645 system provides quality medium format at accessible prices. The 200mm is the standard telephoto for the system. For 645 medium format portrait and nature work.