Perhaps it's just the wide angle (retrofocus) designs that are cramped
for space.
Chuck Norcutt
Piers Hemy wrote:
> I just checked, Mike, and 180/2.8, 300/4.5, and Zuiko 1.4x are all no
> problem with the Russian chip, they do not come close to the plane of the
> chip so would not be a problem with the Chinese chip either.
>
> I don't see why you think the 135/4.5 would not work, because the 65-116
> tube (which you would need anyway) is no problem, nor are the bellows (which
> would be an alternative to the bellows).
>
> If the Chinese chip is fixed the same way as the Russian chip is suggested,
> then yes, it is with cyanoacrylic adhesive. It *can* be "cracked" off the
> mount by application of pressure along the lens axis (and I notice that the
> Chinese seller explicitly advises against that!) but I do not think that it
> would represent a problem in day to day use. On the contrary, it helps with
> installation, since you can correct for initial misalignment (guess how I
> know that).
>
> --
> Piers
>
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Mike
> Sent: 19 February 2008 04:00
> To: 1
> Subject: [OM] Re: focus confirmation chip
>
>
>> "When the adaptor fits, the focus confirmation works, but with many
>> lenses the chip takes up too much space.
> I should have been more specific. I'd like to use longer focal lengths where
> the 4/3 crop is really an advantage. 85~250, 180/2.8, 300/4.5, and Tamron
> 300/2.8 perhaps with a 1.4x. The chip appears to be super-glued onto the
> adapter and looks mighty fragile. A dedicated one for each lens is too rich
> for me. Another lens where IS and focus confirm would be nice is the 135/4.5
> macro but can't see that working. I did try out the
> 300/4.5 handheld with the new firmware and was rather pleased with the
> result. Maybe well braced it would do as a last resort.
>
> Mike
>
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
>
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
>
>
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|