The OM-4 and 4T can do MUCH longer autoexposure times with spot metering
than with Center Weighted.
--
Chris Crawford
Fine Art Photography
Fort Wayne, Indiana
260-747-5101
http://www.chriscrawfordphoto.com My portfolio
http://blog.chriscrawfordphoto.com My latest work!
On 8/12/09 4:44 PM, "Carlos J. Santisteban" <zuiko21@xxxxxxxxx> wrote:
> Hi Fernando and all,
>
> From: Fernando Gonzalez Gentile <fgnzalez@xxxxxxxxxxxxx>
>
>> Only thing I can quickly do is go and read what the 'official' manual says.
>
>
> Unfortunately, the manual, as in every other camera on planet Earth, just
> specifies metering performance... at ISO/ASA 100 :-(
>
>
>> Just checked the plain 4 @ 3200: 4 sec.
>
>>
>
>> Seems that specs say 1 minute at iso100.
>
> Yes. I've got more data from mine:
>
> -From ISO/ASA 6 to 250 (including the "usual" 100) it always does exactly
> three minutes -- well beyond the quoted minimum.
> -At ISO/ASA 320, it only does about 11-12 seconds :-(
> -From 400 to 1600, maximum exposure time gets lower as usual: 8" @ 400 down
> to 2" @ 1600 -- still a good performer against almost any other SLR.
> -Beyond 1600, the decreasing rate is faster: about 1.5 seconds @ ASA 2000, 1
> sec @ 2500 and the dreaded half-second @ 3200 :-(
>
> But for extreme low light metering I already own a nice 2n... The real
> benefit from the OM-4 series is the multi-spot metering, and this 4Ti still
> performs better than my old plain 4.
>
> Cheers,
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|