You are probably over-exposing due to the velvet,
which may be more than 3 stops darker than 18 0ray.
Also are you shooting C41? Try looking at the
negatives to see if the jewelry is very, very dense.
If you throw in the next variable of the automatic
print machines on top of the TTL being tricked by a
dark background, who knows what results you will get.
Try using a grey card or gray velvet to begin with,
use manual exposure on the flash set up, bracket, take
notes, and use slide film.
Warren
--- Scott Gomez <scott@xxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
> My girlfriend is putting her purloined (from me)
> OM-4 to use, trying to
> photograph some small jewelry items. Here's the
> setup:
>
> OM-4 with 65-165 Telescoping tube and 135/4.5. Flash
> is from T-28 Twin unit.
> The chart says that for the T-28 with this lens/tube
> in MANUAL high-power
> mode on the T-28, the exposure is 1.6 feet at F45
> and ASA100. However, we're
> getting a consistent UNDER reading using TTL flash
> mode at only F22 with
> ASA200 film.
>
> We're almost dead on at 1.6 feet from her subject,
> and I suspect the
> background is what's causing trouble. It's a jet
> black piece of velvet.
> Anyone have any suggestions? Are we truly
> underexposing? Or are we likely to
> be over-exposing the actual subject and getting an
> UNDER reading due to the
> dark background.
>
> ---
> Scott Gomez
>
> < This message was delivered via the Olympus Mailing
> List >
> < For questions,
> mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page:
> http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>
=====
Warren Xato
For where to go when you know when
-PhotoDates-and-Places@xxxxxxxxxxxxxxx
__________________________________________________
Do You Yahoo!?
Great stuff seeking new owners in Yahoo! Auctions!
http://auctions.yahoo.com
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|