Thank you for your enlightening explanation for why some lenses have stiff
aperture rings. However, I would like to point out that the A*85/1.4 is
not most lenses.
Frank,
Point well and truly accepted! :-)
Cheers,
Cotty
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Personal
On 15 Jun 2001, at 22:07, Cotty wrote:
But - what happens when you squeeze a metal aperture ring? Answer,
nothing. The fact it is metal means that it holds its shape. When you
squeeze a plastic/poly-something aperture ring, it changes shape from a
true circle, very very slightly, but just
Further to the recent thread regarding stiff aperture rings, some may
like to know my experience with a brand new Sigma 70-200 2.8, so if this
is too off topic for you, please go no further. However, there is a
Pentax link...
Notice how most lenses, including Pentax offerings are sturdy
Pål,
To do a quick check if its mechanical or dirt, let 1 drop (indirectly
applied) of WD40 creep behind the aperture ring.
If that loosens it up after some movement, its dirt.
The effect is temporary, (weeks ?) so a more definite cleaning is required.
George
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This message is from the
- Original Message -
From: Pål Jensen
Subject: Stiff aperture rings
I've noticed that the aperture rings on my A 35/2.8 and A
24/2.8 are getting progressively stiffer. You almost need to use
force on the 24mm. Is this normal..any remedies...
I've had that happen on a couple of lenses
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