Canon 35/1.8 cleaning

[CZeni]

Just scored a nice little 35/1.8 Canon lens...has a bit of haze inside I'd like to clean out. Any tips on how to get into the lens to allow this?

Thanks...

CZ
NC

 

[back alley]

i think this has come up before.
have you done a search of this section of the forum?

joe

 

[CZeni]

i think this has come up before.
have you done a search of this section of the forum?

joe

For my 50/1.4, yes...that's where it came up and found it in a search.

Was I smart enough to search this time? No...

But curiously enough, the 35/1.8 comes apart in exactly the same fashion as the 50/1.4...so I've waded in, cleaned it, and put it back together 🙂

 

[back alley]

very cool!
i just did a search also and it was a 50/1.8 that i found.

so you already took it apart and cleaned it?

i wish i had that skill/courage.

where did you find your lens and i'm curious what you will think about it after using it a bit.

joe

 

[CZeni]

very cool!
i just did a search also and it was a 50/1.8 that i found.

so you already took it apart and cleaned it?

i wish i had that skill/courage.

where did you find your lens and i'm curious what you will think about it after using it a bit.

joe

Courage is proportional to the money I have invested...this lens was fairly inexpensive so I had rather a lot of courage...I would need a LOT of fortitude to think about opening a Leica lens.

I am very fortunate to have an outstanding camera shop nearby. He took this lens in along with an M3, a 'cron and a Canon 135mm lens. He gets enough of my business that he knows what I'm a sucker for, and puts it aside for me...neither one of us had a clue as to the value of the lens, so when he said $100 I said sure...I figure it's worth at least that 🙂

 

[back alley]

very nice price, especially with being able to clean it up yourself.

looking forward to seeing some pics from it.

joe

 

[John Shriver]

The ring just inside the focusing cam on the rear of the lens, with two spanner slots, is what holds the whole lens assembly into the focusing mount. Use a spanner wrench to remove that. Don't mess with the inner spanner ring, it's quite unlikely that you need to remove that lens element.

The haze is probably on the surfaces facing the iris. There are two lens blocks that screw into the iris assembly. Scribe them first, so that you tighten them back up just as tight as they were. Then unscrew, clean, blow out dust, and reassemble.

 

[taffer]

That element behind the Canon lens' iris seems to be a haze attraction, my on transit 35/1.8 was described to have a very slight haze as well and in fact I think my 50/1.2 has developed more haze since I bought it 😡

I'm looking forward to see some results Craig, so that I can drool thinking on when my own one will show up 🙂

Oscar