For those not in the know, the Canyon Ee-s focusing screen is designed
to assist manual focus for lenses of f/2.8 or larger apertures. If I
get a chance today I'll try a comparison test with the standard and Ee-s
screens with the Zuiko 135/3.5. I did try a couple shots with it
yesterday which seem to be fine but I didn't compare. I did notice that
metering was quite accurate at f/8. The Ee-s screen works fine with the
Tokina 80-200/2.8 on auto but, with my eyes, I haven't even tried
manual. That lens has a minimum focusing distance of 1.8 meters and I
don't have a Canyon mount extension tube so it doesn't get used with
anything even approaching macro which is where I'd probably choose
manual focus.
Chuck Norcutt
Andrew Fildes wrote:
> Did he find it acceptable with regular great big back-breaking 2.8
> telephotos as well? And slower apertures.
> I just stumbled over a cheap - well cheapish Tamron 180mm 3.5 Macro
> and want to use both in AF and MF.
> Does the expert think I might be better off with this screen perchance?
> It are bleeding sharp so far in AF.
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
>
>
>
> On 26/08/2007, at 10:03 AM, Chuck Norcutt wrote:
>
>> Ah, yes, Dr. Focus. He has a 5D too and installed his Ee-s focusing
>> screen today in order to try out (strangely, for the first time) his
>> 85/2. At f/2 the Ee-s does a better job of assisting manual focus
>> than
>> the standard screen. He said it was very nice having a bright, easily
>> focused lens that didn't weigh 50 pounds. Sharp shots too when
>> properly
>> focused. Also nice to have a real focusing scale with DOF markers.
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