![Pentax HD PENTAX-D FA645 35mm f3.5 AL [IF]](https://photographylife.com/cdn-cgi/imagedelivery/GrQZt6ZFhE4jsKqjDEtqRA/photographylife.com/2016/02/Pentax-HD-PENTAX-D-FA645-35mm-f3.5-AL-IF.jpg/w=500,h=500,fit=crop)
Lens Summary
Brand: Pentax
Also Known As: Pentax 645 35mm f/3.5
Lens Type: Prime Lens
Format: Pentax 645 / MF
Focus: Autofocus
Lens Mount: Pentax 645
Release Date: 2015-11-11
MSRP Price: $1599.95
Made in: Japan
Production Status: In Production
Lens Description: Providing a wide-angle field of view on Pentax 645-series medium format cameras, the HD PENTAX-D FA645 35mm f/3.5 AL [IF] Lens blends an expansive perspective favored by interior, architectural, and landscape photographers with a sophisticated optical design for notable sharpness and even illumination. The 10 elements in 7 groups design incorporates one glass-molded aspherical element, one hybrid aspherical element, and one high refractive index low dispersion element, all of which combine to suppress chromatic and spherical aberrations and other distortions. Complementing the optical layout is an HD lens coating, which has been applied to individual elements to control flare and ghosting for contrast-rich, color-accurate results.
Pentax HD PENTAX-D FA645 35mm f/3.5 AL [IF] Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Prime Lens |
| Focal Length | 35mm |
| Mount Type | Pentax 645 |
| Format | Pentax 645 / MF |
| Compatible Format(s) | 645 Medium Format |
| Compatible with Teleconverters | No |
| Shake Reduction (Image Stabilization) | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximim Aperture | f/3.5 |
| Minimum Aperture | f/32 |
| Maximum Angle of View (Full frame or larger format) | 76° (with 645D/Z body), 90° (with 645 Film body) |
| Optical Information | |
| Lens Elements | 10 |
| Lens Groups | 7 |
| Diaphragm Blades | 9 (Rounded) |
| Low Dispersion Glass Elements | 1 |
| Aspherical Elements | 2 |
| HD Coating | Yes |
| Super-Multi Coating (SMC) | Yes |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| Internal Focusing | Yes |
| Filter Information | |
| Filter Size | 82mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Dimensions | 88 x 90mm |
| Weight | 570g |
| Other Information | |
| Available in Colors | Black |
Lens Construction
![Pentax HD PENTAX-D FA645 35mm f/3.5 AL [IF] Lens Construction](https://photographylife.com/cdn-cgi/imagedelivery/GrQZt6ZFhE4jsKqjDEtqRA/photographylife.com/2016/02/Pentax-HD-PENTAX-D-FA645-35mm-f3.5-AL-IF-Lens-Construction.jpg/w=9999)
MTF Chart
![Pentax HD PENTAX-D FA645 35mm f3.5 AL [IF] MTF Chart](https://photographylife.com/cdn-cgi/imagedelivery/GrQZt6ZFhE4jsKqjDEtqRA/photographylife.com/2016/02/Pentax-HD-PENTAX-D-FA645-35mm-f3.5-AL-IF-MTF-Chart.png/w=9999)