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A bit of DIY with the Zenitar

 
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Jieffe



Level 2

Joined: 04 Nov 2007
Posts: 297
Location: Brugelette, Belgium

PostPosted: Mon Jan 21, 2008 10:31 am    Post subject: A bit of DIY with the Zenitar Reply with quote

I've got the flu and decided to stay home today. As I'm getting bored, I though I could share with you the little (non-destructive) modifications made to my Zenitar 16mm.

First of all, it's the K-mount version. Used on a digital Pentax body, you need to use it in manual mode. Most of the time, I forget to push the Ae-l button to mesure the exposure. Therefore, I wanted my lens to behave like a M42 fitted with a K adapter.
Very easy to do : just unscrew the clear filter then remove the black circle (3 screws). You remove the 2 screws fixing the lever and voil?, you can use the Av mode.



I then turned my attention to the (lack of) front filter ring.

Some internet sources suggests to fit a 60 to 62 step-up ring but this proved to be the difficult part. B&H list one but the sending costs to Europe are too high. On Ebay, most adapters are for Hasseblad, not compatible with a 60mm thread. I finally found this one : Click here to see on Ebay. To secure the ring, I cut 2 fine strips of electrician tape which I placed on the hood threads, then I simply screwed the ring. Finished with a strip of electrician tape around the lens to avoid light leaks.

Beauty shot (made with the little brother Samsung S630) :

Fitted with a Cokin P Filter Holder :

No vignetting on my camera (1,5 crop factor).
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The gear I use : Samsung GX1s, a few Tamron, Pentax, East German and Russian lenses (Modded Canon G2 for IR).
Gimp & Ufraw on Linux Zenwalk
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Jesito



Level 3

Joined: 24 Aug 2007
Posts: 2366
Location: Sitges, (Spain)

PostPosted: Sat Feb 02, 2008 10:49 am    Post subject: Reply with quote

Nice findings, Jieffe... I've just seen this thread.
I'm thinking in getting a Zenitar. How do you like it?
Could you please post same samples?

Thanks!.
Jes.
_________________
Jesito's backsack:
Zooms Sigma 18-200, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro (Adaptall)
Fixed CZJ Planar 50mm 1.7, Helios 44-2, Cosinon 28mm, CZJ Sonnar 135, Industar-61, Jupiter-9, Industar-50, CZJ Pancolar 50/1.8, Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Weltblick 135mm
DSLR Canon 350D, Pentax K10D
TLR/6x6/645 YashicaMat, Mamiya 645E, Petri 6x45, Nettar
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, Pentax SF7, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S,
Rangefinders Chinon 35EE, Konica C35 auto, Olympus 35RC, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3, Regula Cita III, Voigtlander Vitoret LR, Welta Welti-I, Argus C4, Kodak Signette 25, Zorki-4, Bessa-R
Compact Film Konica C35V, Voigtlander Vitorets, Minox 35 ML, Canon Prima Super 105
Compact Digital Caplio GX100, Aiptek Slim 3000, Canon Powershot 520


Life is that boring wasted time in between two pictures
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Richard_D



Level 3

Joined: 21 Oct 2007
Posts: 2396
Location: Faversham Kent UK

PostPosted: Sat Feb 02, 2008 12:33 pm    Post subject: Reply with quote

A useful little tutorial - thanks
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Richard

The interesting bit:

Nikkors: 20mm f2.8 AIS, 24mm f2.8 AIS, 28mm f2.8 AIS, 35mm f2 AIS, 50mm f1.4 AI, 50mm f1.48AI, 50m f2 AI,
55mm f3.5 AI'd, 105mm f4 AI, 135mm f2.8 AI'd, 135mm f3.5 AI'd, 200mm f4 AI'd
.
Nikon E Series: 100mm f2.8 .
Soviet Nikon Mount: Zenitar 16mm f2.8, Arsat/arax/photex 85mm T&S f2.8 .
Other: Asahi Super Takumar 55 mm f2 (M42) ,Tamron 300mm f5.6 SP, Tamron 500mm f8 SP.

DSLR: Nikon D700. 35mm SLRsNikon FE, Pentax S1a.
TLR: Rolliecord II.
Sub-Minature: Pentax Auto 110, 18mm f2.8, 24mm f2.8, 50mm f2.8.

More to come...
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Juanma



Level 2

Joined: 01 Jan 2008
Posts: 259
Location: Cambrils, Spain

PostPosted: Sat Feb 02, 2008 4:53 pm    Post subject: Reply with quote

Jesito wrote:
Nice findings, Jieffe... I've just seen this thread.
I'm thinking in getting a Zenitar. How do you like it?
Could you please post same samples?

Thanks!.
Jes.


If you like the fish-eye effect, a Peleng 8mm is far better for a crop camera like yours. The Zenitar is best for a full frame camera. On a crop camera the effect is mild (if you compare it to the Peleng)
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Juanma

Canon EOS 600 | Praktica MTL5B | Zorki 4K | Jupiter 8 | Flektogon 4/20 | Pentacon 2,8/29 | Flektogon 2,4/35 | Tessar 2,8/50 | Industar 50-2 | Jupiter 9 | Sonnar 3,5/135 | Some AF stuff | A couple of MF lenses coming...
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Flor27



Level 3

Joined: 13 Sep 2007
Posts: 1197
Location: Paris, France

PostPosted: Sat Feb 02, 2008 8:11 pm    Post subject: Reply with quote

A Peleng on an APS-C cropped sensor has approx. the same field of view of a 16mm Fisheye on 24x36mm frame.
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Switching from M42 to Minolta MD & Contax/Yashica
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Juanma



Level 2

Joined: 01 Jan 2008
Posts: 259
Location: Cambrils, Spain

PostPosted: Sat Feb 02, 2008 10:17 pm    Post subject: Reply with quote

Flor27 wrote:
A Peleng on an APS-C cropped sensor has approx. the same field of view of a 16mm Fisheye on 24x36mm frame.


Exactly, that's the point. Very Happy

Thanks, Florent.
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Juanma

Canon EOS 600 | Praktica MTL5B | Zorki 4K | Jupiter 8 | Flektogon 4/20 | Pentacon 2,8/29 | Flektogon 2,4/35 | Tessar 2,8/50 | Industar 50-2 | Jupiter 9 | Sonnar 3,5/135 | Some AF stuff | A couple of MF lenses coming...
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Jieffe



Level 2

Joined: 04 Nov 2007
Posts: 297
Location: Brugelette, Belgium

PostPosted: Sun Feb 03, 2008 11:06 am    Post subject: Reply with quote

Jesito wrote:
Nice findings, Jieffe... I've just seen this thread.
I'm thinking in getting a Zenitar. How do you like it?

Just love that little lens ! Got it more then 10 years ago to use on my MZ5.

Most of the members of this forum have a Zenitar.

The fisheye effect is still there on crop DSLR, just not as dramatic as with a full frame camera.

Quote:
Could you please post same samples?


Not at home right now ... I just took a few pics to illustrate my answer but I can't find my GF card reader Sad It will have to wait 'till she comes back home.
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The gear I use : Samsung GX1s, a few Tamron, Pentax, East German and Russian lenses (Modded Canon G2 for IR).
Gimp & Ufraw on Linux Zenwalk
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Jieffe



Level 2

Joined: 04 Nov 2007
Posts: 297
Location: Brugelette, Belgium

PostPosted: Sun Feb 03, 2008 11:50 am    Post subject: Reply with quote

She came back quickly !

Here it goes ... No masterpieces, just some quick and dirty samples, no sharpening.








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The gear I use : Samsung GX1s, a few Tamron, Pentax, East German and Russian lenses (Modded Canon G2 for IR).
Gimp & Ufraw on Linux Zenwalk
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View user's profile Send private message Visit poster's website MSN Messenger
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