Derick Crucius Posted February 18, 2020 Share Posted February 18, 2020 Hey all, I just wanted to ask a simple question on if the wratten gel filters for the bolex can affect the image if they are scratched? I have a ton of tungsten stock that I’d like to shoot In daylight and my 85 filter seems just a little beat up (visible scratches and marks, no finger prints, dirt, or grime though) and I was wondering if it will affect the image? If so, I might opt to just pick up a step up ring along with a Tiffen 85 and call it a day. Thanks! Link to comment Share on other sites More sharing options...
Gregg MacPherson Posted February 18, 2020 Share Posted February 18, 2020 If in doubt just replace it. Cheap as chips (Aussi french fries). .https://www.ebay.com/itm/Kodak-Wratten-Gelatin-Filter-No-85-75mm-NEW/202514018482?hash=item2f26c6b0b2:g:nwMAAOSwm6VbsnlU But if you need to custom rig something on the front, just do it... Link to comment Share on other sites More sharing options...
Premium Member Aapo Lettinen Posted February 18, 2020 Premium Member Share Posted February 18, 2020 visible scratches and marks on gel filter may affect the image easily. If it's not possible to test them then it would be wiser to just replace the filter or use the glass one like the OP suggested. I personally like to use 3x3 filters with clip on matteboxes if possible (the 3x3 tend to be cheaper than 4x4 and are more compact as well) Link to comment Share on other sites More sharing options...
Premium Member Aapo Lettinen Posted February 18, 2020 Premium Member Share Posted February 18, 2020 the gel filters are handy if wanting to shoot with very small lenses like the 25/1.4 switar, or when shooting with fisheye/wide angle lenses. I like to use a Chinese c-mount 8mm lens on my H16RX for wide angle shots (extremely compact lens and pretty OK optically) so the gel filters may became handy in these situations though they are a little pain to work with because they collect dust so easily Link to comment Share on other sites More sharing options...
Derick Crucius Posted February 18, 2020 Author Share Posted February 18, 2020 6 hours ago, aapo lettinen said: visible scratches and marks on gel filter may affect the image easily. If it's not possible to test them then it would be wiser to just replace the filter or use the glass one like the OP suggested. I personally like to use 3x3 filters with clip on matteboxes if possible (the 3x3 tend to be cheaper than 4x4 and are more compact as well) How would the scratches affect the image? As in contrast? Best, Derick Link to comment Share on other sites More sharing options...
Premium Member Aapo Lettinen Posted February 18, 2020 Premium Member Share Posted February 18, 2020 56 minutes ago, Derick Crucius said: How would the scratches affect the image? As in contrast? Best, Derick More like shadow lines or a blur as I remember Link to comment Share on other sites More sharing options...
Dr. Thomas Faehrenkemper Posted March 1, 2020 Share Posted March 1, 2020 (edited) The easiest way to get gelatine filters for the Bolex in all colors and for a lifetime (!) is to order this little booklet from Lee Filters. Maybe it is for free in the US, but you can buy it on Ebay: https://www.ebay.de/itm/323904610725 Edited March 1, 2020 by Dr. Thomas Faehrenkemper Link to comment Share on other sites More sharing options...
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