Negative Positive
Title: Fragile filter
Review: It appears that the glass of which the filter was made was not tempered by the way it broke when it was subjected to a gentle tap. If the Tiffen process does not call for tempering the glass then it has a defficient process for a product to be used as a protection filter. Fortunaely it do not cause damge to the lens it was intentended to protect. Not have had that happening to me in fifty years of buying UV/Protection filters for seven cameras beginning from a Leica 3G, bought 2nd hand in 1950.
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