peter brooks
5-Feb-2021, 04:29
Two related queries:
1) does anyone know of a resource / information on non-metric filter sizes (I've looked in the excellent 'Where to look...')? For instance I have an Ilex Paragon 12" f4.5 (in a whopping Ilex #5) with a threaded front that is around 3.155" (just over 80mm), a size that doesn't make any sense to me. Or maybe it is a 'Series' size?
2) I have read of people using foam board ('foam core' I think you might call it in the US?) and (IIRC) 'gels' to make custom filters, and this would seem to be a simple and easy solution. I'm familiar with all sorts of filters but not gels, what would I be looking for (I'm in the UK but should be able to find equivalents)? Or is there a better material? I primarily shoot black and white, so yellow, orange and red.
Any previous experience, advice or ideas much appreciated :)
1) does anyone know of a resource / information on non-metric filter sizes (I've looked in the excellent 'Where to look...')? For instance I have an Ilex Paragon 12" f4.5 (in a whopping Ilex #5) with a threaded front that is around 3.155" (just over 80mm), a size that doesn't make any sense to me. Or maybe it is a 'Series' size?
2) I have read of people using foam board ('foam core' I think you might call it in the US?) and (IIRC) 'gels' to make custom filters, and this would seem to be a simple and easy solution. I'm familiar with all sorts of filters but not gels, what would I be looking for (I'm in the UK but should be able to find equivalents)? Or is there a better material? I primarily shoot black and white, so yellow, orange and red.
Any previous experience, advice or ideas much appreciated :)