The 40.5mm Front Lens Cap by Pentax is designed to fit the Pentax 01 Standard Prime and the Pentax 02 Standard Zoom Lenses for the Q-series Interchangeable Lens cameras. This is a dedicated Pentax brand lens cap suitable for 40.5mm filter threads. It is a squeeze type lens cap that clicks in place, essential to keep your lenses free of dust, moisture, and smudges and to protect them from accidental impacts and scratches.

Cap for Pentax Q-mount 01 & 02 Lenses    Squeeze-type Lens Cap

Related Questions and Answers

Q: 1. What does this lens weigh?

A: Pentax HD PENTAX D FA 150-450mm f/4.5-5.6 DC AW Lens weighs 4.41 lb

Q: 2. what is the best Quick Release Plate to use with this lens?

A: It all depends on the type of quick release system one has.Many are Arca-Swiss style but not all are exactly the same and some do not work with others.If you are using an Arca-Style quick release system the P-20 is a good one for a lens that heavy and long.

Q: 3. Is this lens compatible with the Rear Converter 1.4x L? I accept that the converter will not do auto focus. Only need to know if it will fit and the Aperture function will work correctly.

A: Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses p/n 37962 The rear converter works flawlessly with both the camera-driven AF system and the lens-driven AF system, including that of the SDM and DC-series lenses. The camera's firmware must be updated to the latest version before using the autofocus function. It is a Full format converter

Q: 4. what is included with this lens?

A: Includes front and rear caps, lens hood, tripod mount and a protective carrying case with shoulder strap.

Q: 5. Where can I get a replacement PH-RBA86? Its the sliding "window" in the lens hood that allows access to a polarizer fitted to the lens.

A: The best way to get replacement parts for it would be to go to the MFR: Pentax Website https://us.ricoh-imaging.com/repairs/

Q: 6. Is this compatible with full frame cameras, ie: the upcoming Pentax K-1?

A: Yes, it covers the full frame and was designed specifically for the full frame. Any Pentax lens designated DFA is full frame. APS C coverage lenses are designated DA or DA*. It's a great lens by the way. I've been using it on my K3, and it will be used on my K-1, as soon as that camera arrives.

Q: 7. Is the tripod mount arca swiss compatible or is a separate adapter needed?

A: The tripod collar mount is a standard 1/4 -20 thread.

Q: 8. Can anyone please describe what, in their opinion, is the kind of printed image quality difference can I expect moving from a Canon 5D III and Canon prime 14mm to a Pentax 656z and this lens?

A: Any prime lens should have a better resolution than any zoom from the samecompany. Also, all zooms are sharper at the wide end. The main question, to ask yourself, is: Do you need/want to spend $12,000+ for a new camera and new lens or can you still work/earn money with your Canon 5DIII, which is still one of the best on the market. How big do you want to print. And, If you are thinking about having exhibitions and think you need larger prints... Try this... Show the gallery your work at the largest/best size with your Canon and then buy the Pentax, after you get a contract/fixed date for a show. Don't spend money on a fantasy. I owned a photo gallery in NYC, I know how it works.

Q: 9. does either focusing or zooming change the length of the lens?

A: The lens would offer internal focus and zoom, which would not change the length of the lens.

Q: 10. What is the spacing between the two mounting holes on the tripod foot? I have a TeleVue tripod head with bolt holes 39mm apart, and it would be a wonderful coincidence if both could be used.

A: just measured -- 40 MM center to center of the holes.