reprogramming the emf chip is SLOW and its easy to make mistakes, but
given the modest cost the the chip and adapter <30 pounds,I have one
adapter for each leans (24mm shift, 35mm shift, 80-200 f2.8 Tamron). Its
possible to buy just the chip on ebay and add it to existing adapters.
On 10/03/2011 22:26, usher99@xxxxxxx wrote:
> JK writes:
>
> I have several adapters with emf focus confirmation chips on them.
> These chips allow the user to program the focal length of the lens and
> the wide open aperture.
>
>
> I have used a different chip that uses the DOF preview button (not the
> shutter and I like that) to activate it. One requires a wide aperture
> programmed in first to use the AF confirm with any precision--
> seems to quite good on the CV180/4 though the VF is OK with that lens.
> (depth of focus on the standard screen seem to be about F4 anyway)
> It is a pain to reprogram it for the correct aperture. I think it may
> be easier with the emf chip? Do you find that to be the case?
> Mike
>
>
>
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