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Great Shot! Mix Photography and Drinking with a Converted Zoom Lens Cup

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Picture of Great Shot! Mix Photography and Drinking with a Converted Zoom Lens Cup
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How about drinking a Canoncino, Takumar Sunrise, or just a Zeiss cold beer?

I'm sure you have all seen the photoshopped picture of the Zoom Lens Coffee Mug.  I thought it was a ridiculous idea but deep inside I wanted one.  How hard could it be to take the optical glass out of an old lens and put in a drinking glass.  As it turned out, not that hard at all!

Now you can make your own.  But don't stop at something that looks like a zoom lens, make one out of a real zoom lens that still zooms, focuses, and changes aperture.  In fact, with the lens cap on, no one would ever know!

Seriously, please let me know what you think, ask questions, post pics of your own conversions, and if you like it, rate it!

 
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Step 1: Find a Lens

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How many times have you been searching on E-bay or at the local thrift store and found an old zoom lens that was going for a couple of dollars because it had scratched, cloudy, or fungus-ridden optics?  Now you know what to do with it.

Bigger is definitely better in lens cups, so a big long zoom or telephoto, especially one with a large front lens will make a generous coffee cup or cocktail glass, but you could make shot glasses out of 50mm lenses (if you can find a shot glass that will fit).

The one I found was around NZ$5 and was a Star-D brand 80-205mm f 3.8 lens.  I wanted a bigger one but I didn't want to spend too much before I knew whether it was going to work or not.

I also like the old 1-touch zooms (same grip zooms and focuses) so it seemed like a perfect "doner" lens. 

Step 2: Disassembly - Part 1 - Outer Optics

So what you want to do is remove all the lenses and mechanisms from lens so you can fit the largest possible drinking glass in their place.  Every lens is different but you are likely to find similar construction methods.

The front lens can be the most difficult but it is much easier if you aren't worried about scratching anything.  Usually, the front lens is held by a ring that has all the words and numbers on it.  If you look closely where the lens cap hooks on, you'll see it is a very fine thread.  This is the thread that filters screw onto and it is what the ring is screwed onto as well.

Camera techs have different sized rubber rings called lens wrenches that they push onto the ring and twist to "unscrew" them.  I used a small screwdriver and pushed it counter clockwise. It didn't take too much force to loosen it, then it's just a matter of unscrewing it with your fingers.

Under that lens was another, also held in by a ring with a notch on it so same technique.

Under that was one held in by 4 screws, then another with a threaded ring.

Keep going until you can't remove any more lenses from the front.

Step 3: Disassembly - Part 2 - Inner Optics

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You might have to start from the bayonet mount and work out, but this one had three screws on the side so the back of the lens could be separated (and set aside).

Just keep taking pieces off like you did in the last step until you get the outer cylinder separated from the inner zoom mechanism.

Take off the rubber grip to access screws that could help separate the zoom mechanism.

Step 4: Disassembly - Part 3 - Zoom Mechanism

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Now you need to work out which parts of the lens are visible when it is together and how little of the lens is needed to keep it together.

I found that there was a front section, a back section, and central tube that connected the front to the back.  Then there was the zoom grip that slid over the three parts and that was basically all that was needed to get the lens back together.

So the last two photos are these skeleton pieces in their most collapsed then their most expanded configuration.

Now its time to go drinking glass shopping! 

Step 5: Shopping for a drinking glass

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So now you can take your skeleton zoom lens to your favourite second hand shop and find the perfect drinking glass.

I took my skeleton lens to the Christchurch Supershed (our city recycling centre) where I found a few likely contenders.  Two glasses seemed to fit ("rounded base" and "tall shot glass" in the pic) so I payed 25 cents each for them.

I liked "rounded base" glass because it was bigger but the only way to make it work was to not use the original center tube of the lens and somehow attach (glue or screw) the inner section to the sliding zoom section, then attach it to the outer section (glue or screw).

Because the "tall shot" glass was wide at the mouth then tapered, it was smaller in diameter than center section.  This was great because I could attach it to the re-assembled.

Step 6: Lens Cup Assembly

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After re-assembling the lens, I ended up with a hollow cylinder (pic 1) with nothing between the aperture and the front.

Because the lip of my glass was just smaller than the opening, it sat a bit too low to be secure so I added a spacer that came from another part of the lens to raise it a fraction (pic 3).

With the glass in place (pic 4) I then screwed down the original outer ring and tightened it using a small screwdriver (like I loosened it in the first place).

You can see in pic 6 that the outer ring just holds it by the lip of the glass but it is very secure and doesn't move at all.

That's all there is to it! 

Step 7: Finished Product!

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 So here it is, the hopefully popular, zoom lens drinking cup conversion.

As you can see, you can drink wide open (f3.8 in pic 2) or with increased depth of field (f22 in pic 3).

You can also zoom and focus while drinking, and if you are away from your drink, you could put the lens cap on it to keep dust and your mates out of it.

You might also be able to take photos with it....  I didn't have a camera with a Pentax K bayonet mount, but I don't think the shot glass offers much in the way of optic.

Please let me know what you think, ask questions, and if you like it, rate it!
santy223 years ago
Hah, best idea.
Specially when compared to the store-bought zoom lens mugs, which are often poor quality (yes that is a real thing and you can look it up)

I bet you can do some interesting stuff with the optics and assorted parts you extracted from the lens, too.
ehagen3 years ago
I'm in the process of taking apart a lens nearly identical to the one here. I'm stuck on the zoom mechanism. How did you get yours apart, as I don't see any good pictures or tips on that here.
tewharau (author)  ehagen3 years ago
Basically, there are three common ways to disassemble most lenses.

1) unscrew rings holding the glass elements at the end. Old school lenses can usually be unscrewed and newer lenses may have rings glued on. They have to be removed first,

2) Remove small screws at the base or on the side of the lens.

3) Remove screws under the rubber grip.

Hope this helps
sjoobbani5 years ago
 Definatly want to do this, but I can't find a lens anywhere.
tewharau (author)  sjoobbani5 years ago
 Your profile doesn't say where you are, but I'd try your local thrift store.  People are always getting rid of film cameras.  You could also ask at a second hand camera shop for fungus-ridden or scratched lenses.
 I'm in oregon, I can go anywhere in ORegon and washington though.
tewharau (author)  sjoobbani5 years ago
I just found this site which seems to have a Goodwill site (with a store search) and Finders Keepers looks like a good place to look because it has more than just clothing.  You can also look at pawn shops and even put an ad in any local classified ad papers.....

oregon.uscity.net/Thrift_Stores/
Awesome, no doubt that I have to try this.
I'm visioning a completely tricked out travel mug.

I just bought two second hand lenses off trademe, so if they turn out to be crap hello new mug!
tewharau (author)  misscourtzie5 years ago
I ran into the opposite problem.  I was looking for crap lenses (under $10) on trademe but the first three were too nice to tear apart!

Post pics when you do your mug!

lmao yellow snow hahahahahaha

nepheron5 years ago
AHAHAHAHHAHAHAHAHAHAHAH
AHAHAHAHAHAHAHHAHAHAHAHA
AHAHAHAHAHA
HEHEHEHE
HOHO hehe
haha ho he
hah

This is a winner. 5*
Make the lens cap watertight add a bigger lense and some insulation foam and you have a thermos !!
tewharau (author)  stephenniall5 years ago
 Awesome idea! I'm looking forward to the photos!
Ninzerbean5 years ago
 I LOVE this idea, I never saw the photoshopped one before but if I had I too would have had to have/make one. Great job.
Very creative and would make an excellent gift for a photographer friend/relative!
 
tewharau (author)  AngryRedhead5 years ago
 Thanks for the encouraging comment.  I hope others make conversions and share their experiences (and photos!).
Beautiful! I've wanted to do this but never gotten around to finding an old lens and tearing it apart.