Lens cover for Sigma 8mm fisheye?

[Mazero]

I just got my manual focus Sigma 8mm fisheye lens and I simply love it. It's just that I am afraid to take it out because there is no lens cover.

Could someone recommend me a solution? It has a lens diameter of 7 centimeters.

[F16SUNSHINE]

Can you show us a photo of the lens?
I've made lens caps out of some pretty goofy shit before.
With fisheye the front element needs special attention from the cap.
Post a pic and something will be figured out.

[Mazero]

Here's the picture. I found a shop who provided soft lens covers for fitting lenses. They wanted around $25 for it, which is pretty absurd.

[F16SUNSHINE]

Here are three from B+H photo priced from $5-$10
The first one and cheapest looks like a good bet. It has a convex front that you could line the inside of with Micro-fibre cloth for extra protection.
These are usually a mm or so larger than the stated diameter so you can use gaffers tape around the inside for a bit of extra grip

http://www.bhphotovideo.com/c/product/475569-REG/B_W_65069709__300_70mm_Push_On_Lens.html

http://www.bhphotovideo.com/c/product/125298-REG/Kaiser_206970_70mm_Push_On_Lens_Cap.html

http://www.bhphotovideo.com/c/product/157555-REG/Schneider_65069709_70mm_Push_On_Lens_Cap.html

[Mazero]

[F16SUNSHINE]

The shipping is a standard quote. You should send them a email for a real price. This cap will fit an envelope and should not be more than 8eur ($12) to ship it. You could always make one from a pvc tube as well.

[koji]

I have Sigma fisheye 8mm, the cap is almost useless IMO. Instead you
should use a pouch like beside the lens in your photo, of course much
shallower one you may need. For the further protection, you can pad it
from the inside.
My 2 yen.