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#1
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Rear Filter for older Takumar 55mm f/3.5 ?
I'm considering trying to land an affordable older 55mm f/3.5. Can any
users tell me if there is any possibility of positioning a gel filter to the rear element, or is it a millimeter from the mirror? I guess gels up front would be cheaper than glass. I only need a med.yellow. and a warming filter for color. Thanks, KAS |
#2
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"Ken Smith" wrote in message
om... I'm considering trying to land an affordable older 55mm f/3.5. Can any users tell me if there is any possibility of positioning a gel filter to the rear element, or is it a millimeter from the mirror? I guess gels up front would be cheaper than glass. I only need a med.yellow. and a warming filter for color. I had that lens and it was surprisingly good, although more prone to flare than I liked before I got a good shade. Spend the bucks on a lens hood and two good filters. Seriously, that's all you need to be happy. I forget whether they were 100mm or 105mm filters. |
#3
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see http://medfmt.8k.com/bronfilters.html#homebrew for tips on larger filters (over 80mm etc.) at low cost; see also surplus shed surplus filters in 100+ mm sizes; and notes on rear mounted filters (one issue, focus shift ~= 1/3rd thickness of filters, so gel warming filter would be best as thinnest etc. hth bobm -- ************************************************** ********************* * Robert Monaghan POB 752182 Southern Methodist Univ. Dallas Tx 75275 * ********************Standard Disclaimers Apply************************* |
#4
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On Wed, 27 Oct 2004 10:17:23 -0500, "jjs" wrote:
"Ken Smith" wrote in message . com... I'm considering trying to land an affordable older 55mm f/3.5. Can any users tell me if there is any possibility of positioning a gel filter to the rear element, or is it a millimeter from the mirror? I guess gels up front would be cheaper than glass. I only need a med.yellow. and a warming filter for color. I had that lens and it was surprisingly good, although more prone to flare than I liked before I got a good shade. Spend the bucks on a lens hood and two good filters. Seriously, that's all you need to be happy. I forget whether they were 100mm or 105mm filters. I used to have that lens as well. The filter size was 100mm, which is not an easy size to find filters for, so I got myself a step-up ring to use 105mm filters, which are somewhat easier to find (but quite expensive). I changed the lens for a later 55mm f/4 lens which according to my limited testing has less flare and less distortion, and which takes 82mm filters. Still not cheap, but both cheaper and easier to find than 100mm or 105mm filters. Pentax used to have a gel-filter holder for the old 100mm filter size, which would take a 3" inch square gelatin filter. It was prone to scratching even with a gelatin filter, and would only accept the thickness of a gelatin filter foil, which means that the new plastic filters by Cokin, Lee and others can't be used with the holder. I can't think of a way to attach any filter - even a thin gelatin filter - to the rear of the lens. -- - Helge Nareid Nordmann i utlendighet, Aberdeen, Scotland For e-mail, please use my initials with the same domain as the posted address |
#5
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"Bob Monaghan" wrote in message
... see http://medfmt.8k.com/bronfilters.html#homebrew for tips on larger filters (over 80mm etc.) at low cost; see also surplus shed surplus filters in 100+ mm sizes; and notes on rear mounted filters (one issue, focus shift ~= 1/3rd thickness of filters, so gel warming filter would be best as thinnest etc. Adding to Bob's good information - the site is www.surplusshed.com where they had, last time I purchased, a set of filters of 4.25" diameter in red, yellow and clear, in a wooden case for $15. They are military-spec. - very good and also very thick. If someone needs a filter larger than that, there is a long-established optical glass cutter in England who will make a filter for you. They did it for me when I needed a special 145.5mm contrast filter - something you can't even buy at any price, at a price approximately 15% of the clear-glass similar thing made by Pentax. Schott glass. You can't do better. |
#6
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On Wed, 27 Oct 2004 23:38:01 +0100, Helge Nareid
wrote: I changed the lens for a later 55mm f/4 lens which according to my limited testing has less flare and less distortion, and which takes 82mm filters. Sorry, it's too long since I've used that lens. It takes 77mm filters. -- - Helge Nareid Nordmann i utlendighet, Aberdeen, Scotland For e-mail, please use my initials with the same domain as the posted address |
#7
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Helge Nareid wrote in message . ..
On Wed, 27 Oct 2004 23:38:01 +0100, Helge Nareid wrote: I changed the lens for a later 55mm f/4 lens which according to my limited testing has less flare and less distortion, and which takes 82mm filters. Sorry, it's too long since I've used that lens. It takes 77mm filters. Helge!! You need to go use that lens. Its made for Scotland. Thanks, Ken Smith in Wyoming P.S. dump Bush !!! |
#8
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I believe that Olympus made a 100mm UV filter for their big
telephotos, ie. 250/2 and 350/2.8. They turn up about once a year on Oboy. Warren (Ken Smith) wrote in message . com... I'm considering trying to land an affordable older 55mm f/3.5. Can any users tell me if there is any possibility of positioning a gel filter to the rear element, or is it a millimeter from the mirror? I guess gels up front would be cheaper than glass. I only need a med.yellow. and a warming filter for color. Thanks, KAS |
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