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Roger Hicks -- Author of The Rangefinder Book

Roger Hicks is a well known photographic writer, author of The Rangefinder Book, over three dozen other photographic books, and a frequent contributor to Shutterbug and Amateur Photographer. Unusually in today's photographic world, most of his camera reviews are film cameras, especially rangefinders. See www.rogerandfrances.com for further background (Frances is his wife Frances Schultz, acknowledged darkroom addict and fellow Shutterbug contributor) .


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HELP! Broken filter for Vivitar Solid Cat
Old 09-16-2018   #1
Roger Hicks
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HELP! Broken filter for Vivitar Solid Cat

Disaster! I dropped the clear filter for my 600/8 Series 1 and cracked it. Has anyone any idea where to find a replacement? I think it's 35.5mm but I'm not sure. I still have ND, orange and yellow filters but the ND makes the lens REALLY slow, and apparently you have to have a filter in the light path (part of the optical formula, allegedly). Anyone else had the same problem?

Of course I can just try it with no filter, and I will, but obviously I can't do a comparison shot, 'cos the filter is broken...

Cheers,

R.
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Old 09-16-2018   #2
Oren Grad
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Roger, both Heliopan and B+W offer 35.5mm clear filters, though depending on your preferred retailer, you may have to wait a few weeks to get it on special order because it's such a rarely used size.
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Old 09-17-2018   #3
Roger Hicks
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Quote:
Originally Posted by Oren Grad View Post
Roger, both Heliopan and B+W offer 35.5mm clear filters, though depending on your preferred retailer, you may have to wait a few weeks to get it on special order because it's such a rarely used size.
Thanks very much, but I wondered if anyone was SURE that the size was 35,5mm. After some quick Googling it seems that it is widely agreed that it was. Some reviews refer to VMC filters but I rather doubt that there are optically significant differences in the thicknesses of the different marques.

Cheers,

R.
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Old 09-17-2018   #4
Oren Grad
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The instruction manual for the 600mm Solid Cat, with specifications noting the filter size as 35.5mm, can be found here:

http://www.boggys.co.uk/download.php..._OM_400dpi.pdf

The manual does say (p. 8) "Standard 35.5mm filters are not recommended", but does not say why - was there an optical reason, or was this just a way of getting owners to purchase any necessary replacements from Ponder & Best rather than another supplier?
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Old 09-17-2018   #5
MrFujicaman
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Roger, Oren, I think what Vivitar meant was that you needed a high grade UV filter in the light path-not cheap crap. Either that or there are problems with the physical size of the filter.

My Tamron 200-500 zoom uses 43mm filters in the rear, but they have to be the special Tamron filters with the thinner than normal mount. Regular 43mm off the shelf filters will not fit. This might be the issue with the Series 1 flters-they were custom made for that one lens.
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Old 09-17-2018   #6
Oren Grad
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Quote:
Originally Posted by MrFujicaman View Post
Either that or there are problems with the physical size of the filter....
Good point. You'd think that the instructions would be more explicit on the point if that were the issue, but OTOH it wouldn't be the first time that a company's instructions were technically imprecise.

Neat how a seemingly simple question turns out to have these extra layers of complication.
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Old 09-17-2018   #7
peterm1
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If you really get stuck it might be possible to have a new glass cut from an existing filter and inserted into the existing metal filter ring if the ring has a screw thread mount for the glass insert. Essentially you get an old UV lens of appropriate size (36mm would be best given it is already close) mark out the correct new size then grind it down and fit it. Fiddly but if you have no option........ I have certainly swapped out filter glass and even made small adjustments in this way to fit new glass into an existing filter ring. But never made larger changes. I have done this when for example I had a nice Leica silver filter ring for a Leica in 39mm but the glass was colored for black and white shooting and I wanted UV glass instead for every day use. In this way I could swap the glass and keep the ring.
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Old 09-17-2018   #8
BillBingham2
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You might check under Perkin Elmer solid cats for other sources for filters. That's who designed and originally sold them to the government.

There might be additional info on the filter sizes and pitches from them. I doubt Vivitar did any changes to the product of that level.

B2 (;->
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Old 09-18-2018   #9
MrFujicaman
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peterm1 might just be on to something, Roger..

I bought my M3 6 years ago and it came with the #13352 Leitz lenshood/polarizer combo gadget. The polarizer had delaminated and was in awful shape. I bought a 43mm polarizer off Ebay and took it apart and swapped the ruined glass out with the one from the polarizer off Ebay.

You might just be able to do the same thing if you have a spanner wrench to take the Vivitar filter with.

Quote:
Originally Posted by peterm1 View Post
If you really get stuck it might be possible to have a new glass cut from an existing filter and inserted into the existing metal filter ring if the ring has a screw thread mount for the glass insert. Essentially you get an old UV lens of appropriate size (36mm would be best given it is already close) mark out the correct new size then grind it down and fit it. Fiddly but if you have no option........ I have certainly swapped out filter glass and even made small adjustments in this way to fit new glass into an existing filter ring. But never made larger changes. I have done this when for example I had a nice Leica silver filter ring for a Leica in 39mm but the glass was colored for black and white shooting and I wanted UV glass instead for every day use. In this way I could swap the glass and keep the ring.
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Old 09-18-2018   #10
Roger Hicks
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Thanks everyone. I've just ordered 3x Kood UV filters (multi-coated, Japanese) for 10.99 delivered to a friend in the UK. That''s under $15. They're on close-out, hence the price, but they are apparently practising for Brexit and won't ship to France.

Cheers,

R.
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Old 09-18-2018   #11
Thud
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Try this guy.
Robert Cairns Co. LLC
He is in New Hampshire
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Old 09-23-2018   #12
rbiemer
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Roger,
A bit late to this but, this page might prove useful:

https://www.filterfind.net/35.5.html

About a third of the way down the page is :
Quote:
Tokina TM500 500f8

35.5 Tokina Japan slim for rear mount set/3...ND2x, ND4x, Skylight

w/leather pouch...n/o...39.00 qty 1

35.5 Tokina Japan ND2x slim for rear mount... clean...15.00 qty 1

35.5 Tokina Japan ND4x slim for rear mount... clean...15.00 qty 2

35.5 Tokina Japan Skylight slim for rear mount... clean...15.00 qty 1
Regards,
Rob
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CAT filter
Old 11-06-2018   #13
ph.
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CAT filter

I just noticed this thread.



It would be interesting if the new filters give another result than the original.



Minolta states that their mirror lenses take a special version of their filters. They offered two types with the same dimensions in their filter catalogue, possibly with two different types of glass. Quite substantial cost difference.



p.
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