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paulalin31
Joined: 19 Sep 2018 Posts: 4
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Posted: Thu Sep 20, 2018 5:11 am Post subject: help aperture blades |
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paulalin31 wrote:
someone can help me with that problem?:how can i put back aperture blades (7 ) on Sonnar 180/2.8 medium format ? thanks a lot |
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visualopsins
Joined: 05 Mar 2009 Posts: 10462 Location: California
Expire: 2021-06-22
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Posted: Mon Sep 24, 2018 2:08 am Post subject: |
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visualopsins wrote:
Welcome paulalin31
You have blades? _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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paulalin31
Joined: 19 Sep 2018 Posts: 4
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Posted: Wed Sep 26, 2018 4:57 am Post subject: |
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paulalin31 wrote:
yes i have blades. 7 blades |
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visualopsins
Joined: 05 Mar 2009 Posts: 10462 Location: California
Expire: 2021-06-22
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Posted: Wed Sep 26, 2018 7:21 am Post subject: |
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visualopsins wrote:
Please post photo of one blade. Somebody can then show us how blades are positioned to produce an iris. Then should be simple to rebuild iris inside lens. _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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paulalin31
Joined: 19 Sep 2018 Posts: 4
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Posted: Wed Sep 26, 2018 10:59 am Post subject: |
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paulalin31 wrote:
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Himself
Joined: 01 Mar 2007 Posts: 3209 Location: Montreal
Expire: 2013-05-30
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Posted: Wed Sep 26, 2018 3:00 pm Post subject: |
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Himself wrote:
Something tells me that you're in way, way over your head.
But, given the fact that it's a big lens it's much easier than if it was a CZJ 135/3.5.
Zebra version to be more specific.
Now, you need a wooden dowel inside the barrel with the same diameter as the barrel itself and then you can start laying down the blades.
The tricky part is that every blade but the first one, obviously, should be positioned UNDER ( not above ) the one before it. The second one goes under the first one , the 3rd under the 2nd, so on and so forth.
If you don't do that it will not open correctly.
As usual it might be other methods to skin the proverbial cat but this is the way I did it. _________________ Moderator Himself |
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cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
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Posted: Wed Sep 26, 2018 3:29 pm Post subject: |
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cooltouch wrote:
I recommend you do a search on YouTube for aperture blade reassembly. I'll bet you get hits. These videos should help.
Here are a couple examples of what I found. I did a search on 'lens aperture blades'.
https://www.youtube.com/watch?v=-8Ha1blxeEA
https://www.youtube.com/watch?v=M4T0RQSfnyk _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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paulalin31
Joined: 19 Sep 2018 Posts: 4
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Posted: Sun Sep 30, 2018 2:09 pm Post subject: |
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paulalin31 wrote:
thanks all for help |
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