Lens Summary
Brand: Pentax
Also Known As: Pentax 645 Macro 90mm f/2.8
Lens Type: Prime Lens
Format: Pentax 645 / MF
Focus: Autofocus
Lens Mount: Pentax 645
Release Date: 2012-09-10
MSRP Price: $4499.95
Made in: Japan
Infrared Rating: Good
Production Status: In Production
Lens Description: The Pentax 90mm f/2.8 D FA 645 Macro ED AW SR Lens is a fast, medium-length lens (equivalent to 71mm in 35mm-format) for use with Pentax 645-mount medium format cameras. The f/2.8 maximum aperture provides greater control over depth of field and features rounded 9-blade diaphragm construction. This lens has the Pentax Quick-Shift Focus System for rapid switching between auto and manual focus modes, and integrates a Shake Reduction mechanism for countering the effects of camera shake or image blur.
Pentax HD PENTAX-D FA 645 Macro 90mm f/2.8 ED AW SR Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Prime Lens |
| Focal Length | 90mm |
| Mount Type | Pentax 645 |
| Format | Pentax 645 / MF |
| Compatible Format(s) | Pentax 645 |
| Compatible with Teleconverters | No |
| Maximum Reproduction Ratio | 0.5x |
| Shake Reduction (Image Stabilization) | Yes |
| Aperture Information | |
| Aperture Ring | No |
| Maximim Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (APS-C or smaller format) | 34° |
| Optical Information | |
| Lens Elements | 11 |
| Lens Groups | 9 |
| Diaphragm Blades | 9 |
| Fluorine Coating | Yes |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| Minimum Focus Distance | 0.41m |
| Filter Information | |
| Filter Size | 67mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Dimensions | 6.35 x 3.81cm |
| Weight | 1040g |
| Other Information | |
| Available in Colors | Black |
Reviewer says no Weather/Dust Sealing. However, this lens does offer the Pentax AW (all weather) rating, and indeed I consider this an important feature. You can walk around and capture all sorts of bugs in rain storm!