Hey all,
I recently purchased a 100 mm EF f2.8 USM MACRO. I found it a tad too front heavy when tripod mounted so I purchased a Canon Tripod Ring Mount (D).
My problem is that it is too tight a fit and I cannot engage the locking pin. I have checked and rechecked the model and I have definitely purchased the correct unit.
Is there a trick to mounting these things onto the lens?
Geoff Port