[mico]

I wanted to get a fisheye lens and jumped on the Rokinon 8mm for $199. Later that same day, I ran across a deal on a new DA 10-17 for $250. The lens was in the display case and is perfect except for missing the lens cap. Adorama and B&H sell the replacement lens cap for $40. Does anyone know where I can get a cheaper version for this lens?

[EarlVonTapia]

You could just use a regular 58mm lens cap. The sides will be exposed, but not by much, and overall the front element should still be pretty much protected.

[Adam]

You could just use a regular 58mm lens cap. The sides will be exposed, but not by much, and overall the front element should still be pretty much protected.

That's pretty clever!

[Sandy Hancock]

The spring loaded clamps on that lens cap must get dangerously close to the front element.

[Hornet]

i found a soft pvc pipe cap end in the Home Depot plumbing section that fit perfectly over the front of this lens. Not pretty but cheap and functional

[scole]

Get a Hood Hat from OP/Tech. I have these now for all my lenses except the 55-300 (I still use the wrap pouch that it came with).

[EarlVonTapia]

The spring loaded clamps on that lens cap must get dangerously close to the front element.

I checked for that. It does come close, but a piece of paper is able to slip from one open side through to the other with no resistance, which I take as a sign that there is space between the front element and the cap. Also, the cap is quite sturdy, and I can't imagine it flexing, even in extreme heat.

Of course, I've only tested it with the cap I had pictured there. Your mileage may vary with other cap designs, Pentax or otherwise.

[Just1MoreDave]

For my previous fisheye, I used three plastic-rimmed 67mm filters permanently slipped over the outside, then a 67mm cap. That works on the Zenitar also. They worked so well, I forgot to remove them when I took some shots with my film camera. The DA 10-17 exterior diameter is something less than a 62mm filter opening. I have a short metal 58mm thread hood with a 62mm opening that slips over it. I think that would work OK with felt lining and a cap on the end.

[mico]

Thanks for the suggestions.

Does anyone know if this will work? B+W #300 60mm Push-On Lens Cap 65-030522 B&H Photo Video

[THoog]

Thanks for the suggestions.

Does anyone know if this will work? B+W #300 60mm Push-On Lens Cap 65-030522 B&H Photo Video

It probably will work. The outside diameter on my 10-17 is right at 60mm, and I found a comment on flickr from someone who is using that cap on the Tokina version of the 10-17. The Tokina also has a built-in petal hood with 58mm filter threads on the inside (a fairly unusual feature), so if the hoods aren't from the same mold, they are very similar in dimensions.

[mico]

It probably will work. The outside diameter on my 10-17 is right at 60mm, and I found a comment on flickr from someone who is using that cap on the Tokina version of the 10-17. The Tokina also has a built-in petal hood with 58mm filter threads on the inside (a fairly unusual feature), so if the hoods aren't from the same mold, they are very similar in dimensions.

Thanks. I just ordered this item and I'll update the post after I receive it to let you know if it fits.

[mico]

Received the cap today and it fits perfectly!