This Lens Cover for the Pentax FA 400mm F5.6 Telephoto Lens in forest green camo from LensCoat offers your valuable equipment protection from minor scrapes and bumps, preserving its resale value. It also helps break up the shape of your lens, making it less noticeable to wildlife. Manufactured from 100% closed-cell neoprene, this case offers waterproof protection while providing a thermal barrier to protect your hands from the cold lens surface when shooting in low temperatures. This cover features a clear plastic window over the auto focus controls.

100% Closed-Cell Neoprene    Protects from Scrapes and Bumps    Helps Hide Lens from Wildlife    Clear Plastic Window over AF Controls

Related Questions and Answers

Q: 1. Is it weather sealed ?

A: No, the Pentax HD PENTAX-FA 50mm f/1.4 Lens is not weather sealed.

Q: 2. I am confused. If a full frame sensor is smaller than 645, shouldn't the effective focal length increase instead of decrease?

A: Typically, angle-of-view and focal length are described relative to full-frame 35mm as it is more widespread in use. Crop factors would be then be 1x for 35mm, 1.5x for APS-C, and 0.6~0.8 (rough estimate) for medium format sensors. Since this lens is still technically (from physical distance measured stand-point) 400mm from the sensor, it's a 400mm lens. However, its angle-of-view would be equivalent to a 315mm on a full-frame.

Q: 3. The 100-400 contracts as the focal length is changed from 400-100. How does the barrel cover contract when the barrel becomes shorter?

A: The cover section for the extended barrel on the lens has velcro so you can easily remove it when you need to zoom in. This piece was designed to be used only when the lens is fully extended.

Q: 4. Is this a face lift of the 35mm f/2.0 SMCP-FA AL Lens (B&H #PE352ALFA) or an entirely new optical formulation?

A: It has HD coatings and improved optics.

Q: 5. What is the internal volume of the lens sack?

A: If the dimensions of the beanbag are 19.5 x 11.5 inches (49.5 x 29.2 cm), then the overall volume is 224.25 cubic inches (1445.4 cubic centimeters). That converts to about 1.0 US gallon, specifically 0.971 gallon (3.675 liters). Anything more accurate than that could be provided by the manufacturer.

Q: 6. With this lenscoat attached, will the lens still fit securely in the Nikon case?

A: The LensCoat is very tight to the lens and like a skin. It should be fine and not prevent it from fitting in the case.It has not been tested specifically but there is usually enough room to squeeze it in to a case.

Q: 7. Is this cover easy to remove once applied?

A: Yes. You can remove the lens cover on this easyCover Lens Oak Neoprene Cover for Sony FE 100-400mm F4.5-5.6 GM OSS Lens (Green Camo).

Q: 8. Follow up to K1000 question-does the K1000 have full functionality or does it only work with the largest aperture?

A: The Pentax HD PENTAX-FA 50mm f/1.4 Lens is fully compatible with K-mount film cameras, this lens allows you to retain all camera functions. The Pentax K1000 Film Camera will be work with the maximum aperture of f/1.4 and the minimum aperture of f/22.

Q: 9. Will this lens work on the Pentax K-3 III?

A: Not directly, Pentax smc FA 645 400mm f/5.6 ED IF Lens has a Pentax 645 medium format native mount.Pentax K-3 Mark III DSLR Camera has a K-mount. You can use a lens adapter to connect Pentax 645 lenses to Pentax K-mount cameras. All the current adapters are strictly under full manual operations.

Q: 10. Since it has an aperture ring, will it work on older film camera's like the K1000 & similiar cameras?

A: This lens should work with any Pentax K Mount camera.