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Kastro
Joined: 15 Jul 2010
Posts: 31
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 Posted: Wed Sep 29, 2010 7:32 pm Post subject: Zenitar 16mm Fisheye |
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Kastro wrote:
Hello all MF addicts,
I recently acquired a zenitar 16mm fisheye and really enjoy it. Unfortunately I'm not sure what happened, but it looks like there is a "hole" in the lens and it lets light flares in. Its really not cool during the day as it adds this purple dot to images. I tried cleaning it with just a cloth and rubbing in small circles around the lens, but i still see this 'spot' which i think is where the light comes in at.
My question is, how can I fix/clean that? and I THINK the lens is MC.. so is there a way to fix it with some solution? or do i have to find some camera shop and let them play with it?
Any ideas?
Thanks ahead of time. |
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Joosep
Joined: 25 Jan 2010
Posts: 305
Location: Estonia, Tallinn
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| Posted: Wed Sep 29, 2010 8:14 pm Post subject: |
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Joosep wrote:
Pictures would be nice.
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The future is analogue.
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Kastro
Joined: 15 Jul 2010
Posts: 31
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| Posted: Wed Sep 29, 2010 10:11 pm Post subject: |
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Kastro wrote:
Ya know what... I think you're right...
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themoleman342
Joined: 21 Oct 2007
Posts: 2190
Location: East Coast (CT), U.S.A.
Expire: 2013-01-24
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| Posted: Thu Sep 30, 2010 8:07 pm Post subject: |
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themoleman342 wrote:
Looks to just be an unevenness/spot in the coating. Knowing the quality control issues typically associated with the lens, this is probably a manufacturer defect. It's odd that it would affect your pictures in such an extreme way but unfortunately there is probably nothing you can do about it. |
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martyn_bannister
Joined: 23 May 2010
Posts: 1151
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| Posted: Thu Sep 30, 2010 8:12 pm Post subject: |
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martyn_bannister wrote:
Have you got a sample of the problem images? I can't see that coating fault causing much of a problem, so I suspect different cause. |
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Kastro
Joined: 15 Jul 2010
Posts: 31
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| Posted: Thu Sep 30, 2010 11:39 pm Post subject: |
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Kastro wrote:
video that shows it too - http://www.kastromedia.com/vids/flare.mp4 |
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Himself
Joined: 01 Mar 2007
Posts: 3214
Location: Montreal
Expire: 2013-05-30
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| Posted: Fri Oct 01, 2010 2:41 am Post subject: |
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Himself wrote:
Zenitar 16mm is not a fisheye. |
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themoleman342
Joined: 21 Oct 2007
Posts: 2190
Location: East Coast (CT), U.S.A.
Expire: 2013-01-24
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| Posted: Fri Oct 01, 2010 2:48 am Post subject: |
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themoleman342 wrote:
| Quote: |
| Zenitar 16mm is not a fisheye. |
How so? |
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Kastro
Joined: 15 Jul 2010
Posts: 31
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| Posted: Fri Oct 01, 2010 4:28 am Post subject: |
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Kastro wrote:
| Himself wrote: |
| Zenitar 16mm is not a fisheye. |
Que? I'm shooting on a crop sensor which makes it ~28 so the distortion is not as great.. |
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my_photography
Joined: 03 Nov 2008
Posts: 2772
Location: Pearl of the Orient
Expire: 2016-12-25
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| Posted: Fri Oct 01, 2010 7:31 am Post subject: |
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my_photography wrote:
| Himself wrote: |
| Zenitar 16mm is not a fisheye. |
I have the same lens and I can assure you it is a fisheye. Maybe the fish effect is not so obvious nowadays on a cropped body.
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mo
Joined: 27 Aug 2009
Posts: 8982
Location: Australia
Expire: 2016-07-30
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| Posted: Fri Oct 01, 2010 7:54 am Post subject: |
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mo wrote:
Could it be a bad pixel?
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Himself
Joined: 01 Mar 2007
Posts: 3214
Location: Montreal
Expire: 2013-05-30
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| Posted: Fri Oct 01, 2010 10:13 am Post subject: |
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Himself wrote:
I understand what you mean guys, but when I see the the pics taken with a peleng, then I feel like fish.
Nothing against you Paul |
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Kastro
Joined: 15 Jul 2010
Posts: 31
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| Posted: Fri Oct 01, 2010 11:50 am Post subject: |
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Kastro wrote:
| mo wrote: |
| Could it be a bad pixel? |
Naw 'cause when I shade it, it goes away.. I'm going to try an alcohol based cleaner and see if maybe that'll do it.. |
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mo
Joined: 27 Aug 2009
Posts: 8982
Location: Australia
Expire: 2016-07-30
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| Posted: Fri Oct 01, 2010 12:45 pm Post subject: |
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mo wrote:
The guys have talked about using a black texta on surface cracks or dings on the front elements I am not sure if that would work with this issue?
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Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
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themoleman342
Joined: 21 Oct 2007
Posts: 2190
Location: East Coast (CT), U.S.A.
Expire: 2013-01-24
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| Posted: Fri Oct 01, 2010 2:28 pm Post subject: |
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themoleman342 wrote:
Try something really non-drastic. Punch out a circle of black matte construction paper and stick it over the hole. Just a tiny bit of water will hold it there long enough for a test. If the flare still remains, then the problem is elsewhere. If it's gone, maybe search for a more permanent solution to cover the hole.
| Quote: |
| I'm going to try an alcohol based cleaner and see if maybe that'll do it |
I don't truthfully believe any amount of cleaner is going to do the job for this. Unless there is something in that picture that I don't see, it looks as if coating is missing, not dirty or something similar. Cleaning doesn't recreate coatings unfortunately (oh how I've wished that). |
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LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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| Posted: Sat Oct 02, 2010 11:12 am Post subject: |
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LucisPictor wrote:
| Himself wrote: |
| Zenitar 16mm is not a fisheye. |
It is!
On fullframe (what those lenses were made for) The Peleng is a circular fisheye and the Zenitar is a diagonal fisheye (that fills the whole frame).
On Crop the Zenitar turns into a wide angle with heavy distortion, but still is is a fisheye lens, and the Peleng turns into some kind of diagonal fisheye (like the Zenitar on fullframe, but with even heavier distortion).
http://en.wikipedia.org/wiki/Fisheye_lens
http://photo.net/filters-bags-tripods-accessories-forum/00Iqb2
Sorry, if this post sounds like a lecture but we cannot leave your statement uncommented, since it is wrong. 
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