| View previous topic :: View next topic |
| Author |
Message |
Pancolart
Joined: 04 Feb 2008
Posts: 3698
Location: Slovenia, EU
Expire: 2013-11-18
|
 Posted: Fri Oct 27, 2023 8:46 am Post subject: Cosina 3.5-4.5/28-50mm 12 elements design |
 |
|
Pancolart wrote:
Cemented on 4 places. Did a complete CLA. Test to follow. Sorry for crappy drawing.
_________________
---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
|
| Back to top |
|
 |
D1N0
Joined: 07 Aug 2012
Posts: 2530
|
| Posted: Fri Oct 27, 2023 10:42 am Post subject: |
|
|
D1N0 wrote:
looks decentered 
_________________
pentaxian |
|
| Back to top |
|
|
Ultrapix
Joined: 06 Jan 2012
Posts: 563
Location: Italy
|
| Posted: Fri Oct 27, 2023 11:46 am Post subject: |
|
|
Ultrapix wrote:
| D1N0 wrote: |
| looks decentered |
 |
|
| Back to top |
|
|
eggplant
Joined: 27 May 2020
Posts: 517
|
| Posted: Fri Oct 27, 2023 1:46 pm Post subject: |
|
|
eggplant wrote:
I see what structure that's intending to be, up to all the details.
My memory here is going, and I will have to consult the forums on who Cosina made lenses for and how to identify them (here of this era). Particularly for the style of lens below, which I assume is the one as a Cosinon-Z.
(Photos taken from eBay listing):
I have seen Miranda (Dixons in UK photographic brand) lenses be Cosina ones around early 1980s (when they acquired the branding?).
_________________
UK |
|
| Back to top |
|
|
D1N0
Joined: 07 Aug 2012
Posts: 2530
|
| Posted: Fri Oct 27, 2023 1:58 pm Post subject: |
|
|
D1N0 wrote:
When I did research for my 28-50mm topic I found the Cosina in Petri, Hoya, Cosinon and Vivitar
_________________
pentaxian |
|
| Back to top |
|
|
alex_d
Joined: 19 Jan 2019
Posts: 365
|
| Posted: Fri Oct 27, 2023 4:46 pm Post subject: |
|
|
alex_d wrote:
| D1N0 wrote: |
| looks decentered |
but it has great 3d pop & bucket !
... |
|
| Back to top |
|
|
Pancolart
Joined: 04 Feb 2008
Posts: 3698
Location: Slovenia, EU
Expire: 2013-11-18
|
| Posted: Fri Oct 27, 2023 5:58 pm Post subject: |
|
|
Pancolart wrote:
| alex_d wrote: |
| D1N0 wrote: |
| looks decentered |
but it has great 3d pop & bucket !
... |
LOL i see it made an impact.
Yes, Eggplant it is the same as on your photos Cosinon-Z.
_________________
---------------------------------
The Peculiar Apparatus Of Victorian Steampunk Photography: 100+ Genuine Steampunk Camera Designs https://www.amazon.com/dp/B0B92829NS |
|
| Back to top |
|
|
alex_d
Joined: 19 Jan 2019
Posts: 365
|
| Posted: Fri Oct 27, 2023 6:33 pm Post subject: |
|
|
alex_d wrote:
well something is strange to me here, i have somewhere a small cosinon zoom branded as petri
it does look a bit different. its i think late '70 or early '80 lens
[small]lousy bucket ...[/small] |
|
| Back to top |
|
|
stevemark
Joined: 29 Apr 2011
Posts: 3900
Location: Switzerland
|
| Posted: Fri Oct 27, 2023 7:51 pm Post subject: Re: Cosina 3.5-4.5/28-50mm 12 elements design |
|
|
stevemark wrote:
| Pancolart wrote: |
| Cemented on 4 places. Did a complete CLA. |
Awesome!
| Pancolart wrote: |
| Sorry for crappy drawing. |
[/quote]
Uh-oh ... not so awesome
Anyway, seems like a pretty complicated design (Mamiya ZE 3.5-4.5/28-50mm has only 9 lenses and certainly isn't worse)!
S
_________________
www.artaphot.ch |
|
| Back to top |
|
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
