Providing a wide-angle field of view on Pentax HD D FA645 35mm f/3.5 AL IF Lens645-series medium format cameras, the Pentax HD D FA645 35mm f/3.5 AL IF Lensblends 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.

Contrasting the broad, wide-angle perspective is an apt close-focusing system that provides a minimum focusing distance of 11.8" along with a 0.25x maximum magnification for working with nearby subjects. The integrated autofocus motor benefits from an inner-focusing mechanism that quickens focusing performance and also limits the overall lens length for more intuitive handling. A rounded nine-blade diaphragm also contributes to a pleasing bokeh quality when working with selective focusing techniques. Rounding out the feature-set, the 35mm f/3.5 lens also features a Super Protect coating on the front element to prevent moisture, dust, and smudging from affecting image quality and the included petal-shaped lens hood incorporates a polarizer filter window to permit filter adjustment without having to remove the hood during use.

Pentax 645 Mount    27.5mm (35mm Equivalent)    Aperture Range: f/3.5 to f/32    Two Aspherical Elements    High Refractive Low Dispersion Element    HD and Super Protect Lens Coatings    Internal Focusing Mechanism    Rounded 9-Blade Diaphragm    Minimum Focusing Distance: 11.8"    Front Filter Thread: 82mm

Wide-angle prime 35mm f/3.5 lens is designed for Pentax 645 medium format digital cameras, where it provides a 35mm-equivalent 27.5mm focal length, as well as 645 film cameras, where the equivalent focal length is 21.5mm.

The 10 elements in 7 groups construction incorporates one glass-molded aspherical element, one hybrid aspherical element, and one high refractive index low dispersion element, which all combine to significantly reduce chromatic and spherical aberrations, as well as provide edge-to-edge sharpness and illumination.

An HD coating has been applied to individual elements to minimize lens flare and ghosting for increased contrast and color fidelity when working in strong lighting conditions and backlit situations.

An 11.8" minimum focusing distance pairs with a 1:4 maximum magnification ratio for working with close-up subjects.

The integrated autofocus motor benefits from an inner-focusing mechanism for quick, responsive performance. This design also maintains the overall lens length during use for easier handling.

Rounded nine-blade diaphragm produces a smooth out-of-focus quality when working with selective focus and shallow depth of field techniques.

A Super Protect coating has been applied to the front element to guard against dust, moisture, and smudging.

The included lens hood incorporates a polarizer filter window to permit adjustment over the filter orientation without having to remove the lens hood during use.

Related Questions and Answers

Q: 1. Will it fit in my little q series

A: Not without an adapter like this one from Pentax. B&H # PEAQKM

Q: 2. What is the difference (other than about $30 in price) between this lens and the Pentax smc P-FA 35mm F2.0 AL? I have a Pentax K70 and it appears per specs that either will work with autofocus.

A: The HD lens has better elements and coatings for sharper images and reduced flare.

Q: 3. Hi team, will this fit on the Pentax K100D?

A: Yes, the Pentax DA 18-55mm f/3.5-5.6 AL WR Zoom Lens is compatible with the Pentax K100D Digital Camera.

Q: 4. Is this the DAL or DA version of the 18-55mm AL WR?

A: This is the weather resistant DA, which has a metal mount ring. The DAL (meaning lightweight , perhaps) has a plastic mounting.

Q: 5. Does this lens autofocus on a K10d body? I have had issues with some lenses saying they autofocus, but don't.

A: I use the Pentax K10, K20 and the K3 Limited Edition and it works as autofocus on all of the, My K1000 however it is a manual focus.

Q: 6. Will this lense work well with my Kx or K70?

A: Yes, the Pentax HD Pentax-FA 35mm f/2 Lens would be fully compatible for use on both the Pentax K-x DSLR Camera and the Pentax K70 DSLR Camera.

Q: 7. Can this lens be used on a Pentax 645N Or 645NII?

A: Yes, you can use the lens with either camera.

Q: 8. Does this lens work with Pentax 645NII?

A: Yes, it does work with the Pentax 645N II. The mount is the same.

Q: 9. will this work with my "me Super" non-digital SLR?

A: Any Pentax camera body based with a Pentax K lens mount will adapt to the lens.

Q: 10. One of the reviews mentions they didn't like the manual aperture but the picture shows an A setting on the aperture ring which I assume means auto. Thus I would expect that the aperture could be controlled with the control dial either directly or adjusting the shutter speed. Can someone provide the answer?

A: When the lens aperture is set to 'A' the aperture is controlled by the camera and auto aperture control modes, or through the camera controls in manual aperture control modes.This is the same on all Pentax 645 lenses with the 'A' in the lens name, and you can verify by setting if the aperture ring has an 'A' setting.The aperture ring merely gives you the option to go full legacy manual mode, which is sometimes handy, but for the most part I leave mine on 'A' and even if I take a picture in manual exposure, I set the aperture with the camera wheel.