Igor Roshchin
The rear lens cups for Pentax and Tokina lenses are made so that
can be attached in all three angular orientations (corresponding to
the three tabs).
I have a Tamron lens (70-300) that has a cap that is "polarized",
and can only be attached in one position. Just recently I discovered
that several Sigma lenses come with the same sort of rear caps.
So, the question is why do they "polarize" the cap? It makes
it so much more inconvenient to put the cap on with one hand...
Any insights?
On the rear cap department, Pentax is still better than Sigma & Tamron. As a
result, as soon as I buy one of those lenses (bought two Sigmas over the
last years) I replace the odd rear cap with a Pentax or generic (unmarked)
one. That fixes the problem once and forever. Continuing struggling with a
polarized cap is just nonsense to me, whichever their reason for doing that.
Dario
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