see below
-----Original Message-----
From: Henning Wulff
Sent: October 28, 2002 2:44 PM
At 2:33 PM -0500 10/28/02, Fero Bednar wrote:
>Yes, but it could give you at least autofocus confirmation when in MF,
>couldn't it?
>
>Fero
>
>-----Original Message-----
>From: Lars Michael
>Sent: October 28, 2002 12:52 PM
>
>
>
>You'll only have manual focus for
>lenses slower than f/5.6. This is
>due to the AF sensors not getting
>enough light, so blocking pins
>won't help.
>
>Lars
>
>> Does EOS D60 focus with lenses slower than f/8? I plan to use it
>> with 400/5.6 + 1.4 TC. If not what about blocking some pins? Do you
>> have osme experience with this? Can not it damage contacts on camera
>> body?
>>
>> Thanks,
>>
>> Fero
>--
> .~. Lars Michael
The AF sensors depend on angular information, interpreted as contrast
by the circuitry. When the rear exit pupil of a lens is too small
(ie, the side to side angle of the rays hitting the sensors is too
narrow), they don't respond correctly anymore. If they could respond
correctly, AF would be possible. If they don't respond correctly, why
would you want a readout??? An incorrect confirmation isn't much use.
--
* Henning J. Wulff
/|\ Wulff Photography & Design
Oh, I never thought about AF like this, it makes sense. But what about
intensity of the light entering the lens, it has something to do with AF
too, doesn't it (EV numbers)?
Do you think that AF confirmation light would light up even if the
subject is not in focus?
Fero
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
