[Sir Nameless]

My Pentax 10-17 fisheye (old SMC version) came from its original owner with a pinch-on lens cap that grips the inside of the anti-reflection baffles. It protects the front element from scratches OK, but lets in a lot of dust. So I went looking for an original slip-on type, and it's $60!!! Ugh. Anybody have any suggestions for a better lens cap that will keep dust out and won't cost as much as a M50 f/1.7?

[BigDave]

OK, not having the lens, what is the size of the lens cap?

[luftfluss]

There's one on the auction site for $27.47

[luftfluss]

OK, not having the lens, what is the size of the lens cap?

I don't know the size, but it's a push-on type carefully designed to go over the bulbous front element without scratching it.

[Sir Nameless]

@BigDave The pinch cap is 58mm, but that's to grip the inside of the hood, not go over the outside.
@Luftfluss I'll check that out thanks! I did look before, but came up empty. Figured more people would lose a lens cap than a lens, so not to many surplus caps around haha.

[luftfluss]

@BigDave The pinch cap is 58mm, but that's to grip the inside of the hood, not go over the outside.
@Luftfluss I'll check that out thanks! I did look before, but came up empty. Figured more people would lose a lens cap than a lens, so not to many surplus caps around haha.

I just PM'd you the link.

I have an older lens with a similar issue, although not as bad as with the 10-17.

[slartibartfast01]

SRS microsystems in the UK are selling the lens cap for £7.99.
https://www.srsmicrosystems.co.uk/pentax-lens-cap-for-10-17-mm-fisheye-lens.html

[aaacb]

I saw that a brand named Kaiser makes push-on plastic caps, so it should be the same as the one for 10-17 but not metal. You could also try a rubber lens cap, I've never tried those though and they seem to be more expensive than the plastic ones.

[amstel78]

The universal lens caps from KUVRD seem to get good reviews. They're stretchy and padded and are water tight.

[luftfluss]

SRS microsystems in the UK are selling the lens cap for £7.99.
Pentax Lens Cap for 10-17 mm Fisheye Lens

Wow, that's a great price! Bummer they don't ship to the USA.

[Sir Nameless]

SRS microsystems in the UK are selling the lens cap for £7.99.
Pentax Lens Cap for 10-17 mm Fisheye Lens

Thanks for the link. It looked like a good option, but they don't ship to the US.

---------- Post added 12-14-19 at 10:28 AM ----------

The universal lens caps from KUVRD seem to get good reviews. They're stretchy and padded and are water tight.

Thanks for this. Those look really interesting.

[hypermodern]

Srs ❤️

[THoog]

Since the 10-17 was also sold by Tokina in other mounts, I did a search for replacement lens caps for that, and found a thread where the B+W 60mm plastic push-on cap is reported to work well. I think it is around six dollars at B&H. I'm tempted to try it just because my metal cap likes to come off and rattle around the bag.

Edit: It looks like the cap is sold by B+W, but every picture of the cap has the Schneider-Kreuznach logo molded into it. Since my 10-17 is actually the Samsung-badged version, and Samsung paid Schneider-Kreuznach to use their name on lenses (even though neither Samsung nor Schneider-Kreuznach had anything to do with the design), I guess I have to buy one now.

[luftfluss]

^^^ Good thinking!

[Sir Nameless]

I'm tempted to try it just because my metal cap likes to come off and rattle around the bag.

I might try to get something for my 35 macro too while I’m at it for just that reason.