big sky montana Loc: Great Falls Montana

I purchased a used Canon Drop in Filter from Adorama so it came without any information. This is a Canon screw 52 holder, so it takes a 52mm screw in filter. My question is that it came with a "Canon 52mm protect" as part of this holder. I have tried to remove this "protect" but it doesn't seem to budge. If I screw a filter on to the "protect" filter, it looks as if it will not fit into the lens slot. I'd rather not try to place this in the lens and cause any damage. My question is if the "protect", that looks like a filter in its self, is removeable and if just one filter can be screwed into the holder. I don't have a filter wrench but again I don't know if it is removeable.

oldtigger Loc: Roanoke Virginia-USA

my guess is you only use one filter at a time but never use the lens without a dropin cause its designed to have something in there.
place a strip around the protect filter and another around the holder.
fold the strips back over themselves so they have a sticky side out to improve your grip.
Rotate, do not squeeze, and they will usually separate.

davidrb Loc: Half way there on the 45th Parallel

The filler lens screws out of the holder, and your new filter screws in.. Since your's appears stuck use caution, but use force to turn it loose. Temperature changing might help you get the old lens out.

CHG_CANON Loc: the Windy City

There's two models. There's one that comes with the lens originally as shipped that just holds a clear GELATIN filter. The screw-in model that allows changing the filter. I went through this with the EF 300L earlier this year. I just went and grabbed mine to be sure. The one to be modified says SCREW. I had a horrible time trying to remove the Canon screw-in clear filter that came with the SCREW 52. No instructions I remember... Find the "button" in the middle of the arch under the exterior curve on the opposite side of the Canon logo on the "inside" black part of the filter. Hold that button while turning the original Canon filter counter clockwise to remove.

MT Shooter Loc: Montana

If you stop by the store at 703 Grand, I can probably be of assistance.