I used to enjoy using one-touch zooms decades ago when my eyesight was
better. Aw, heck, back then *everything* was better. ;o)
In theory, the shooting process is faster when a lens can be zoomed
and focused by the same ring. This assumes the shooter can see well
and has good eye-hand coordination. I now use two touch zooms
exclusively. Ahem.
I'm glad to hear Rachael is considering expanding her offerings. The
anomalies Jeff experienced with the BrightScreen are very odd. Sorry
to hear about them but glad (I guess!) it didn't cost you too much to
find out.
I never observed such problems when I used screens treated with Bill
Maxwell's HiLux process but my lenses weren't so exotic. BTW, Rachael
refers to it as 'OptiBrite'. When I talked with Bill a couple years
ago he was in the process of setting up a couple dealers to take over
HiLux processing so I assume she is one of those since the description
for Optibrite is almost identical to HiLux.
I recently bought a Katz-eye screen with HiLux. It has an appointment
to be installed in my C@non 20D (cough, cough) next week so I'll be
able to report back after then.
Yours for more in-focus pix,
ScottGee1
On 7/12/06, Jeff Keller <jrk_om@xxxxxxxxxxx> wrote:
>
> Jim is right on target. I don't trust my ability to zoom a one touch zoom
> lens and maintain focus. Focusing at the 250 end wasn't easy but the short
> end seemed like a 1-8 screen. There was little snap. The smudge marks and
> sweat on my glasses added to the difficulty.
>
> I also ping'd Rachael again. She again said Katzeye is getting a lot of
> requests from 5D owners but still hasn't commited to making a screen. I'm
> hoping they'll go forward and also make a screen for OMs!
> -jeff
>
> ----Original Message Follows----
> From: "Timpe, Jim" <Jim.Timpe@xxxxxxxxx>
>
> It's a one touch, which would render the aspect of keeping it in focus
> while zooming difficult at best.
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On
> Behalf Of Chuck Norcutt
>
> I've been thinking about ordering one of these but it wouldn't help in
> your case with such slow lenses:
> <http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details
> &Q=&sku=402221&is=REG&addedTroughType=search>
>
> ps: Is the 50-250 parfocal? Can you focus first at the long end and
> then shorten it up and stay in focus?
>
> Chuck Norcutt
>
>
> Jeff Keller wrote:
> >
> > Overall I would say a 1-13 screen in an OM works better for slow
> > lenses than
> > the Brightscreen. If you are using lenses faster than about f4 and
> have
> > sharp contrast lines in the view to take advantage of the split image
> then
> > the Brightscreen would probably be better than the original plain
> screen.
> > I'm hoping to find time to carefully compare the Brightscreen to the
> > original screen but I suspect that I will go back to the original
> screen.
> >
> > -jeff
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