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ferrick
Joined: 20 Apr 2012
Posts: 643
Location: Hong Kong
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 Posted: Thu Jan 24, 2013 2:33 pm Post subject: Taylor, Taylor Hobson 16mm Projection Lens 2" f1.65 |
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ferrick wrote:
Although this is a projection lens for 16mm camera, the flange distance is surprisingly short, just 5 to 6mm! When I adapt it on my Pentax-Q, I need to be very careful since focusing just a bit over infinity, there is a high risk of cracking the camera senor!
In adapting it, I planted the whole lens into a M42 focusing helicoid. Then I screw the combo into a M42 to PQ adapter. The adapttion is almost done but the abovementioned risk exists due to the protruding rear element of the lens. One further step I took was to put a M49 to M52 ring (about 5mm thick) in between the focusing helicoid and the M42 to PQ adapter so as to ensure that the protruding element will not touch the senor. 
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Gerris2
Joined: 09 Oct 2011
Posts: 229
Location: Wilmington, Delaware USA
Expire: 2014-01-17
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| Posted: Thu Jan 24, 2013 3:24 pm Post subject: |
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Gerris2 wrote:
Beautifully rendered color in the photos!
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Joseph |
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ferrick
Joined: 20 Apr 2012
Posts: 643
Location: Hong Kong
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| Posted: Thu Jan 24, 2013 3:35 pm Post subject: |
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ferrick wrote:
| Gerris2 wrote: |
| Beautifully rendered color in the photos! |
I guess that's what people call "Pentax Color"!  |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Thu Jan 24, 2013 7:53 pm Post subject: |
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Attila wrote:
Remind me to a 'jap crap' sigma zoom or similar , didn't grab my interest 
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jjphoto
Joined: 17 Mar 2009
Posts: 415
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| Posted: Thu Jan 24, 2013 9:27 pm Post subject: |
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jjphoto wrote:
Looks interesting. Are the images sharp? It's hard to tell from the images you've posted. |
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ferrick
Joined: 20 Apr 2012
Posts: 643
Location: Hong Kong
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| Posted: Thu Jan 24, 2013 9:55 pm Post subject: |
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ferrick wrote:
| Attila wrote: |
| Remind me to a 'jap crap' sigma zoom or similar , didn't grab my interest |
The lens got no iris at the moment and thus the images are not sharp. I am going to add iris and then post new pictures afterwards. |
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ferrick
Joined: 20 Apr 2012
Posts: 643
Location: Hong Kong
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| Posted: Thu Jan 24, 2013 9:56 pm Post subject: |
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ferrick wrote:
| jjphoto wrote: |
| Looks interesting. Are the images sharp? It's hard to tell from the images you've posted. |
The images are not sharp since it got no iris at the moment. |
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15679
Expire: 2014-01-07
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| Posted: Thu Jan 24, 2013 9:59 pm Post subject: |
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iangreenhalgh1 wrote:
These are very common lenses in the UK, I have two of them. Neither of mine is labelled TT&H. I don't know who made them but they are seen with all kinds of names on them, including Kodak.
Not sure what design it is, I never used them much due to that very short back focus distance, which is a problem with many projector lenses.
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I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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ferrick
Joined: 20 Apr 2012
Posts: 643
Location: Hong Kong
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| Posted: Fri Jan 25, 2013 1:09 pm Post subject: |
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ferrick wrote:
Today, I added a black plastic ring in between the rear two elements to act as iris. Please advise whether its performance is better than yesterday. 
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