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Forum: Pentax SLR Lens Discussion
02-23-2013, 02:47 AM
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Hello!
I never had any problem with that, so i left it intact! But PLEASE, take photos you aswell and put up here, so that people in the future can find this thread and solve their problems properly aswell! :D
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Forum: Pentax SLR Lens Discussion
02-14-2013, 03:00 AM
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Haha, yeah now that i've reasembled it again, im not scared of opening up more lenses! Once i understood that that tiny little spring was suppose to close the aperture, i felt much relieved, and understood that the tech. inside isnt't that "hardcore", it's all common sence! :D
Now i just need to find some more "broken" lenses that i can fix! :D
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Forum: Pentax SLR Lens Discussion
02-13-2013, 12:56 PM
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Hello again! Im very very pleased to let you know that i now have a perfectly working lens! I went over the aperture-blades 4-5 times with what we in sweden call "T-Röd", or "T-Red" in english, it's some sort of alcohol, and that seemed to do the trick!
It has been very good for my "fix-stuff-skills", i just wished more people, especially from my generation (late 80's), would learn how to fix stuff instead of just buying new ones! :)
Thanks a million Just1MoreDave, you helped me a lot! :)
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Forum: Pentax SLR Lens Discussion
02-13-2013, 11:21 AM
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By the way, can you also see two pins that when moved on, effects the aperture blades?
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Forum: Pentax SLR Lens Discussion
02-13-2013, 11:20 AM
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Whoa, first of all, NICE pics mate!
Im gonna do as you say, and really get all that stinkin' oil out of there! You reckin it will close by itself after that?
By the way, it's really fun to take lenses apart, being gentle and systematic! :D
Alcohol (Pure alcohol, not whisky or that type), might that work or is it too harch on the materials?
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Forum: Pentax SLR Lens Discussion
02-13-2013, 10:58 AM
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Awesome! Yeah, iv'e done some removing of oil already, but there seems to be more to it than just that, i mean, what part of the construction is in charge of closing the blades?
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Forum: Pentax SLR Lens Discussion
02-13-2013, 09:28 AM
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I should point out that all of the glasses isn't removed, it's just the last part that i refitted in order to keep things in order, and to remember how it was built together! :)
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Forum: Pentax SLR Lens Discussion
02-13-2013, 09:23 AM
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Okey guys, now comes some fun stuff, and by that, i mean video-time! :D
Im having a cold at the moment, so excuse me for mumbling some times!
Youtu.be
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src="https://www.youtube.com/embed/DdwvzJuuu-g?controls=1" allowfullscreen>
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I want to point out that in my head, the pin on the mount should work "the other way", at least that's what my minds tell me :S Is it works now, there are two pins that can open up the aperture, but nothing that closes it again!
Enjoy!
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Forum: Pentax SLR Lens Discussion
02-13-2013, 05:55 AM
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Indeed! Im gonna try to take some photos for you later on, i just need to borrow a lens from my roommate for that shoot!
I'll keep you posted with pics later tonight! :)
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Forum: Pentax SLR Lens Discussion
02-13-2013, 03:21 AM
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Hello my dear friends, Im a new member here on PF, although i've been here doing research earlier! :) Since im a Swede, i want to start off by excusing for my lack of proper english grammar, and hope that you can understand what i mean!
My first thread is going to be about how the aperture works, and how it's constructed inside the lens! :rolleyes:
The thing here is that i bought myself a very cheap lens, a RMC Tokina, 28mm f/2.8 whose aperture had stopped at full opening (f/2.8),
and since im very keen on learning how stuff works and most of all, how to repair them, i set off in order to try to repair the problem with the stuck aperture!
I now have the lens taken apart, all the glass is out from the tube, and left on the barrel is the aperture-mechanics and the focus-ring!
The problem that i now have, is trying to figure out how the little pin that is sticking out in the back of the lens-mount is gonna be able to regulate the aperture-opening!
I tested on one of my other lenses, and when i push that pin, it opens up the aperture inside the lens, but no matter how much i try, i cant figure out how the "lens-mount-part" is going to be fitted in order to work properly!
Is there someone here that has opened up a lens before, and know's how i should attach the aperture-linking in order to get it working properly again!
There are two spokes that iv'e found, one is normally bound to the aperture ring, and the other one seems to have the task of opening up the blades again!
As i said, im sorry that my english isn't very technical, but i hope that you understand what i need help with? :)
The very best of regards,
// Daniel :o
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