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dr.volkan
Joined: 14 Nov 2008
Posts: 436
Location: Turkey_istanbul
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 Posted: Tue Nov 15, 2011 8:42 am Post subject: my pentax 20mm 4 but the outer part of the lens different |
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dr.volkan wrote:
i bought 20 mm 4 smc k bayonet last year its outer part of the glass was scrathed and i found 35-80 cosina lens and modified it.. now it is some where smaller than 20 mm 17mm vs
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blende8
Joined: 29 Sep 2007
Posts: 260
Location: Bremen, Germany
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| Posted: Tue Nov 15, 2011 12:40 pm Post subject: Re: my pentax 20mm 4 but the outer part of the lens differen |
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blende8 wrote:
| dr.volkan wrote: |
| i bought 20 mm 4 smc k bayonet last year its outer part of the glass was scrathed and i found 35-80 cosina lens and modified it.. now it is some where smaller than 20 mm 17mm vs |
What did you do?
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Pentax, mysterium quod absconditum fuit ... |
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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Tue Nov 15, 2011 12:41 pm Post subject: |
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ManualFocus-G wrote:
So you swapped the Cosina glass into the Nikon?! That's brilliant! I notice the bottom left corner looks a bit soft though?
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Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
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Minolfan
Joined: 30 Dec 2008
Posts: 3438
Location: Netherlands
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| Posted: Tue Nov 15, 2011 1:39 pm Post subject: |
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Minolfan wrote:
| dr.volkan wrote: |
| I bought 20 mm 4 smc k bayonet last year |
| ManualFocus-G wrote: |
| So you swapped the Cosina glass into the Nikon?! That's brilliant! |
Thats very special and brilliant indeed, a Nikon 20mm SMC with K bayonet   |
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kuuan
Joined: 14 Jan 2008
Posts: 4569
Location: right now: Austria
Expire: 2014-12-26
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| Posted: Tue Nov 15, 2011 1:43 pm Post subject: |
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kuuan wrote:
| ManualFocus-G wrote: |
| So you swapped the Cosina glass into the Nikon?! That's brilliant! I notice the bottom left corner looks a bit soft though? |
wow, really brilliant and amazing that the results are that good!
( Graham it's a Pentax, not a Nikon  )
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dr.volkan
Joined: 14 Nov 2008
Posts: 436
Location: Turkey_istanbul
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| Posted: Tue Nov 15, 2011 4:14 pm Post subject: smc takumar 20 mm 4 not nikon |
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dr.volkan wrote:
there is a mistake.first i bought smc takumar pentax lens= 20 mm f4 but its front glass was scrathed and i try to fix it with some polish compounds but it became very bad than i take out the first outer glass and replaced it with cosina zoom lens first glass but its viev became wider some where like 15-17 mm...thats it
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dr.volkan
Joined: 14 Nov 2008
Posts: 436
Location: Turkey_istanbul
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| Posted: Tue Nov 15, 2011 4:32 pm Post subject: hear is the lens smc takumar 20 mm-17mm cosina |
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dr.volkan wrote:
thank you for replies
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15679
Expire: 2014-01-07
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| Posted: Tue Nov 15, 2011 5:10 pm Post subject: |
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iangreenhalgh1 wrote:
That is fantastic work, you were lucky the front elements were so similar, certainly hasn't spoilt the IQ!
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Pancolart
Joined: 04 Feb 2008
Posts: 3702
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Thu Nov 17, 2011 8:35 pm Post subject: |
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Pancolart wrote:
What a steampunk job - Splendid! I agree with Ian, you were very lucky to find just the right element.
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