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08-11-2011, 05:36 PM   #1
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SMC Pentax 50mm f/1.4 disassemble

I took it all apart I just can't find how to get to the optics to clean them....yea this thing was dropped in the water...someone help me?






Last edited by Pentaxguy22; 08-11-2011 at 05:54 PM.
08-11-2011, 05:56 PM   #2
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Hi
Look Here

Pentax 50mm repair 1
08-11-2011, 05:57 PM   #3
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Slightly different lens - but it may offer help.
https://www.pentaxforums.com/forums/do-yourself/153858-how-remove-fungus-50mm-f1-7-lens.html
Looking at it - you just need the sink plug to remove the name ring and some spanner wrench or equivalent to open up the group.
08-11-2011, 06:12 PM   #4
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WOW thanks everyone

08-11-2011, 06:31 PM   #5
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okay I try a rubber stopper but that not working what is this spinner wrench?
08-11-2011, 06:59 PM   #6
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A spanner wrench isn't going to get you started. It is a tool that looks basically like 2 small screw drivers joined by a metal bar(s). If you look at the lens element itself, you'll see 2 small slots on either side. The spanner wrench (is supposed to) go in those slots so you can twist the lens elements off. In order to do that, you're going to have to get that retaining ring off.

I Hope you made detailed notes on how you took this apart.

08-11-2011, 07:18 PM   #7
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Yea I taken apart a Pentax 28-80mm lens got it back togeather after I clean it the eletronics was damaged when I got it so I took them out and use it as manual lens, anyone have any other ideas to remove the front plate? rubber stopper not working for me.
08-11-2011, 07:24 PM   #8
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QuoteOriginally posted by Pentaxlover22 Quote
...anyone have any other ideas to remove the front plate?
Try Blu-Tack stuck to the rim of a toilet paper roll core. Works for me.

You need to find the right balance between pressure on the ring and torque.

08-11-2011, 07:37 PM   #9
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QuoteOriginally posted by Pentaxlover22 Quote
I took it all apart I just can't find how to get to the optics to clean them....yea this thing was dropped in the water...someone help me?
Time for you to take break and watch a youtube video linked here (how to clean a M 50mm f1.4)
08-11-2011, 07:41 PM   #10
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I got it off!!! thanks!!
I so happy I really want to clean this thing, this be my first f/1.4 best $24 I spend!
I will still need the wrench lol
08-11-2011, 07:46 PM   #11
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WOW this just gets cooler, wrench aside I unscew it by turning it on the carpet
haha I am desperate to clean this lens lol



Thanks for the help everyone! this best site ever!
Looks like a few hours of cleaning off rust lol

Last edited by Pentaxguy22; 08-11-2011 at 07:53 PM.
08-11-2011, 08:16 PM   #12
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The blades so rusty they came apart
I think I should left them alone, this thing must been in water for a while, I guess it can only be used as f/1.4 now, it will have to be for low light shots only, anyone think it worth more or what I pay for it even that this happen?
I know I can get good photos once I clean the optics.
08-11-2011, 08:46 PM   #13
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It'll make a great bokeh lens and the next one, you'll know exactly what to do
08-13-2011, 11:00 AM - 1 Like   #14
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If you're feeling adventurous, you could do this with your lens:

DIY - Create Your Own Bokeh | DIYPhotography.net

It's essentially creating your own external aperture. The shape could be round, or a custom shape like in that link there.
But just because it doesn't have an aperture doesn't mean you can't make one.
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