Yoshizen's Blog

Homemade Lens Cap

While walking in the town with my camera on my shoulder, I realized, I’ve dropped a lens hood

and a cap of my Fish-eye Lens.   Because of the fish-eye lens is protruding on its front, the

Lens cap is a special type.  To buy this type must cost more than £ 50 and may need to order.

—– any how, I didn’t even check the price. I know it is extortionately expensive.

I absolutely have no will to buy it.


Since when the camera industry started, their business model is always the same. Like Kodak

and their Brawny camera, camera itself was sold cheap = can be sold even without profit.

The profit was made from the sale of film and its print making process. Polaroid did the same.

But what about the camera maker who is not selling the film. = While selling the camera itself

cheap, their profit came from the sale of accessories such as interchangeable lens, flash light

even a piece of plastic, such as a lens cap, so, the price is kept such high.

—– Many years ago, a boss of big camera company complained me “ We are effectively

making promotional incentive goods to sell the film. The more we work hard and sell more

attractive cameras which makes more people taking photo, it only creates the more profit to

the Film company, not for us 😦 ”


Then, the Digital revolution completely changed the rules of the game.

Photography no longer need to use the film, hence both Kodak and Polaroid bankrupted.

(Fuji Film escaped this by investing digital imaging technology long before digital cameras

appeared, such as working with Xerox and bought Electronic Scanner’s maker, Crossfield,

then utilizing their film emulsion technology, they diversified, expanded even into forefront

of nano technology).


Thanks to have, such as image-sensor manufacturer, like Toshiba, Sony next door, Japanese

Digital camera evolved very quick though I didn’t buy them until I was fully convinced

that the sensor reached to the level of a film camera. ( I’m not implying such as a

top grade DSLR reached as good as Film camera, but when I saw the sample photos of

Canon 5D, I found the photo showed a flaw of the lens, it’s mean the resolution

of the sensor was reached to the limit of average lens = good enough for average

use) —– So that I bought 5D Mk-2  for my first ever Digital Camera.

(I waited a full-frame DSLR for my collection of ultra-wide and fisheye lenses)

—– comparing the cost of film and its process, still it is cheap, and no need

to mention its convenience to use in the Internet environment.


But coming down to a low-tech, just for a molded plastic lens cap, I wouldn’t pay a price of

hi-tech camera.   I’m an humble, or more precisely mean, poor person. (In principle 🙂 )

So, I decided to make it myself and went to Pound-shop to find the best suited material.

= basically, cap for Fish-eye lens is a pan-shaped shallow cap.  Only a matter is, its diameter.

On the photo right, what I found were a fancy color-changing light and moisturizing hand

cream (of its container, not the cream of cause 😀 )

Light housing has bayonet craw which somewhat fit to the lens front bayonet though, it was

made by Styrole Plastic, hence it may easily brake when it got impact. The cream jar was

made by Polypropylene, hence having certain flexibility to grip the lens top with right fiction.

So that, I’ve chosen to use cream jar. And for top lid, I found a junk Pendulum

of old clock 😉  = Cut the jar to a shallow ring and hot-glued the metal disc of pendulum.

Voilà, a lens cap which cost me only £1 —– still I need to work a bit more to prevent it

accidentally come off and lost again.

So, this is the finished product with some stitching work.  = Over the metal cap,

I cover it with chamois and the additional Velcro strap is to tether the cap

to the lens. 


As I’ve been keep saying, this kind of DIY work is a game. = the more free minded

approach, it would be a fun.   (Not mention, it would save the cost too.

It’s far better to use the same money to a memory card kind) 😀 —– only remaining

headache is “ What to do with a moisturizing cream now kept in honey jar ?” I don’t take or

use any artificial things include the medicine on to my body, especially what can you expect

from £1 cream.—– Anyhow, sweet peach smelled, smooth skin Yoshizen may not be

anything near to sexy.  Yuck ! Ha ha ha 😀


PS:   Strangely, I lost the Lens cap again, and I had to make yet another one.

—– As I don’t have anymore clock pendulum, instead I used a cap of pickles jar.

And in this time I got nice colored leather for a cover.   (Click the photo to enlarge and

see the hand stitch = it is a simple practice, hence good Buddhist’s practice of Mushin.  😀 )

Cap works, with a hint of vinegar smell, and if I press its center, it makes a click sound.  😀



10 Responses

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  1. jmnartsy said, on May 16, 2012 at 08:45

    You are one clever Yoshi…..I’m impressed!

    • yoshizen said, on May 16, 2012 at 10:03

      May be it’s not a matter of cleverness but just a tenacity to find a solution.
      Couldn’t be without a lens cap = necessity is the mother of invention,
      and desperate needs calls desperate measure —– that’s all. 😀

  2. […] Somebody asked me “ How I could cut a plastic jar (in Lens Cap post = link here) […]

  3. fivereflections said, on May 20, 2012 at 19:37

    hmmm couldn’t you just order a lens cap from Canon 🙂

    David in Maine USA

    • yoshizen said, on May 20, 2012 at 20:17

      Hi David.—- That’s what I wrote. Instead to pay £50 for a cap, I made it in £1 and some work
      which was a fun = like stitching, it was very simple work = pushing a needle side to side
      = it doesn’t need a brain but got to be precise = it is a good Buddhist’s practice 😀
      While saving £49 and come closer to enlightenment = it isn’t too bad.
      Don’t you agree ? Ha ha ha 😀

      • fivereflections said, on May 20, 2012 at 21:20

        i understand – a great savings!

  4. Lemony (Gr)Egghead said, on June 5, 2012 at 18:59

    Very inventive and resourceful. Nice work!

    • yoshizen said, on June 5, 2012 at 22:41

      That’s what people says ” Needs is the mother of invention” =
      I can’t go without lens cap = I got to do. Ha ha ha 😀

  5. URL said, on August 22, 2013 at 09:36

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  6. elektrische zahnbürsten braun said, on September 5, 2013 at 10:21

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