First time mounted the CPL.....ran the filter on, and only with the weight of one finger took to where it stopped turning.
Used for one day during a trip to shoot landscapes. Played with the circular setting several times, but never tightened the primary filter at any time.
Came home from the trip, went to take off CPL from UV filter....no can do.
Got out cheap set of plastic filter wrenches....no can separate.
Took a thin lightweight rubber "gripper" for undoing jar lids and filter wrench...no can do
You got just the filters in your hand and not on the lens? You can try putting the wrenches back on and apply pressure as to unscrewing and bang it on the table, kind of what an impact wrench would do for taking off lug nuts. Put it in the freezer to try to shrink the thread contacts and try it again.
Are they the same material? Brass, aluminum? Or mixture?
Well...i'm hesitant of ditching a new $125+ filter....with possible chance of damaging the other!!
Both are brass. And I'm trying off lens to seperate
I was pondering placing in slightly warm water...hoping maybe that some water would seep in between and loosen...but not sure if it would have impact on the CPL filter.
I thought of soaking them but was not sure of the B+W slimline CPL filter if the edges are sealed and no water would get between the multi layers. Somebody else might know for sure. Nothing unusual shooting for the day no bumping .Or one may have been out of round from the start. 82mm thin is pretty big.
Patrick
I have two plastic filter wrenches. In my first attempts, I was placing one on each filter but couldn't get either to "stay" on the filter.
I then placed one on the filter and then placed the filter on the desktop...to give it a flat surface for the hand grips to stay straight. I then placed the other in an off set position and attempted again.
No luck....It was as if I couldn't get a "good" grip on either filters.....I know...cheap wrenches!!
Then I thought....why not place one of the wrenches on the thread of the exposed filter, and then place a rubber band on the slim filter...............WALLA!!!!
One joined filters are now two separate filters!!
The rubber band gave the "extra" grip on the slim filter ring, and the threads allowed the plastic wrench to grip better.
I had a similar issue with my polarizer stuck on a 52-72mm adapter ring - used a few rubber bands to get a much better grip in the filter edges to get them separated.
On a recent trip to the coast, my polarizer got stuck to my 10-stop ND filter, both of which I wanted to use but obviously could not. (I keep all my round filters together, using stack caps, which reduces the volume of the filters. I try to keep the filters loosely screwed together to eliminate sticking.) When I got home, I was preparing to order some plastic filter wrenches, but first decided to try an old home remedy- two rubber bands, which worked well. I think one of the problems in trying to separate two filters is that when we try to grasp the filters, the amount of pressure we use to grasp (to keep the filters from slipping in our fingers) may slightly distort the metal rims, thus increasing friction between the two filters, that in turn makes it even harder to unscrew one from the other. The rubber bands allow one to achieve the necessary grasping friction on the rim without having to grasp as strongly. Whether I am correct or not may be debatable, but at least for me, the rubber bands worked.
fatequest.....it seems it would be backwards your way....I'd want the bottom filter (one holding top filter) to expand...and the top one to contract.....no?
Not sure if this procedure would work with a CPL but I've always used a piece of material that you put under a throw rug to keep it from slipping on a hardwood floor.
place the material on both sides of the stuck filters, place between your palms and turn in the correct direction, works every time and because the material is so soft (but grippy) nothing can get scratched or damaged.
