Made a drop-in 3-stop ND filter for 200l f2

There have been times I've wanted to shoot with a shallow DOF in my studio with multiple strobes and had no solution for the 200L f2. I have ND filters and step up rings to use with my other lenses. Someone in another thread suggested getting a Kodak Wratten ND filter and cutting it to size. I was a little stunned by the cost of a 3"x3" filter, but I found the dimensions and shape for the drop-in filter in the 200L user manual. After carefully cutting it to size, I placed it over the clear glass in the drop in filter. My strobes were metered to f8, and I shot at f2.8. I did have trouble focusing with the reduction in light at first but worked around that. My test subject was less than thrilled, but the filter seemed to work as expected.

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neat idea, looks like it worked well.

Cool idea, always wondered if I'd ever actually use that gelatin filter holder for anything other than just filling in the space when not using a polarizer. Now maybe I will.

Canon also makes a drop-in holder for 52mm screw filters, but since 52mm filters are likely something you'd have to buy specially for that purpose, it would probably cost more than your solution.