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Eddie46
Joined: 05 Dec 2016
Posts: 135
Location: cardiff,UK
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 Posted: Thu Sep 07, 2017 9:41 pm Post subject: Vivitar 70-150 f3.8 |
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Eddie46 wrote:
I recently acquired the above lens on a PK mount.Very Impressive!
However I have a question that I hope a Vivitar fan can help with.
The lens is the older type I believe with the Rotary zoom function as opposed to Slide or Pump zoom.
Just below the Zoom ring and above the Aperture ring is another 'knurled' grip ring.
I have found that this ring also rotates for some reason. It seems to be on a thread as it moves a couple millimetres up or down from end to end,about eight turns in all.
Does anyone have a clue what this is doing,if anything!
Thanks in advance. |
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NACEOD
Joined: 04 Jan 2015
Posts: 12
Location: Arizona
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| Posted: Thu Sep 07, 2017 11:54 pm Post subject: |
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NACEOD wrote:
I don't have the lens but this may help: http://www.boggys.co.uk/page24.html |
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visualopsins
Joined: 05 Mar 2009
Posts: 10540
Location: California
Expire: 2025-04-11
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| Posted: Fri Sep 08, 2017 12:12 am Post subject: |
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visualopsins wrote:
You mean the Close Focus mode actuation ring?
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., 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
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount 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 (Kiron)
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Eddie46
Joined: 05 Dec 2016
Posts: 135
Location: cardiff,UK
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| Posted: Fri Sep 08, 2017 12:17 am Post subject: |
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Eddie46 wrote:
| visualopsins wrote: |
| You mean the Close Focus mode actuation ring? |
I dont think so,close focus is by going past the 70mm stop on Focal length,moved a different element. |
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Eddie46
Joined: 05 Dec 2016
Posts: 135
Location: cardiff,UK
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| Posted: Fri Sep 08, 2017 12:20 am Post subject: |
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Eddie46 wrote:
Nice find,Bookmarked! Thanks. |
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Oldhand
Joined: 01 Apr 2013
Posts: 6008
Location: Mid North Coast NSW - Australia
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| Posted: Fri Sep 08, 2017 8:25 am Post subject: |
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Oldhand wrote:
Is this ring the open/close aperture ring.
I can see that the aperture is set by the back aperture ring, but that may work together with the next ring like a pre-set lens does.
Just a thought
T |
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visualopsins
Joined: 05 Mar 2009
Posts: 10540
Location: California
Expire: 2025-04-11
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| Posted: Fri Sep 08, 2017 8:30 am Post subject: |
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visualopsins wrote:
I think a set screw has become loose allowing that adjustment ring to turn. I suspect the adjustment sets a focus, perhaps infinity, perhaps to adjust close-focus element repositioning.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., 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
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount 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 (Kiron)
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TAo2
Joined: 09 Mar 2012
Posts: 319
Location: Scotland
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| Posted: Fri Sep 08, 2017 12:21 pm Post subject: |
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TAo2 wrote:
Visualopsins is correct. It is the close focus/macro ring. Ye set the zoom at 70mm then use the 3rd. ring (close focus) for just that...close focus. It's probable as visualopsins said that a screw on that ring is loose or missing.  |
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planet.groove
Joined: 20 Apr 2016
Posts: 73
Location: Berlin, Germany
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| Posted: Sat Sep 09, 2017 6:43 am Post subject: |
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planet.groove wrote:
hi,
i had the same problem with this lens. this ring is just for holding the lens, there is no special function. it is screwable and i screwed it against the aperture ring until it was fixed. there is no little screw to fix it. now it looks and works like my other vivitar 70 -150mm lenses.
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https://www.flickr.com/photos/planetgroove |
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Eddie46
Joined: 05 Dec 2016
Posts: 135
Location: cardiff,UK
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| Posted: Sun Sep 10, 2017 7:12 pm Post subject: |
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Eddie46 wrote:
Planet.groove.thank you.That was my impression,it definitely screws and unscrews for something and I,m certain its part of the construction as opposed to a function.Confidence restored. |
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