Designed for use with the Canon Drop-In Filter Mount Adapter EF-EOS R, this Drop-In Clear Filter A is a simple clear protective filter used to guard the interior of the camera body and rear element of the lens when the lens adapter is in use. It is primarily used when the Drop-In Filter Mount Adapter is in place, but no filter effects are desired.
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Like many long time Canon owners (since 1971 for me) we have all accumulated a significant amount of EF glass. To provide an affordable transition to RF glass I found the EF to RF adapter a necessity. I purchased the Canon Drop-In Filter Mount Adapter with Variable ND Filter for use with my Canon R5. As a lower cost alternative to the Canon C70 and using the EF 24-70 F/2.8 II, the ND filter became a good combination. When recording either indoors or under low light the ND filter had to be replaced with a clear A drop in filter. Weight and space is always a concern when traveling and this appeared to be the best alternative for run and gun situations. My only complaint is the cost. It seems that $65 would be more reasonable price for a clear filter and frame.
I'm not convinced these seal flawlessly. in terms of keeping out dust when installed. But it seems to be fine. I prefer using this instead of changing the entire mount out when not in need of a drop-in Pola or ND.
For what they do really is expensive. I will prefered a frame with any glass.
Title says it all. It's just a clear glass and unfortunately, this clear filter is ABSOLUTELY REQUIRED for the drop-in filter adapters to work properly. At an additional $130, I think it's absurd to sell this separately from the adapters.
While this works as it should, it has little utility for me. Because the design of mount adaptor in which this fits requires that adaptor to be removed from the camera and placed upon another lens before re-attaching it to the camera, I find myself either using an adaptor without interchangeable filters, or using the filtered version, rather than the clear insert. I would advise that anyone considering buying this first buy a mount adaptor without a filter, which would cost no more for a Canon and less for another brand, before or instead of, buying this.
For such an expensive filter, it needs a better case. It comes with a petri-dish kind of screw case that has pads that fall out. It's totally unsuitable for using outside of a studio. I ended up buying a custom made case on Etsy instead which is awesome. Also, the adjustment wheel is so loose and needs some dampening to keep it from moving so easily.
Works as expected. Optically clear, has no effect on image quality. Perfect for when you do not need to use the variable ND filter. Not sure why it's so expensive.
Timely delivered filter - allows me to use my Astro modified camera effectively. Good job ...
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