Re: 5 Digital Camera Questions

From: Tom Ferguson ^lt;>
Date: 06/10/04-11:08:23 AM Z
Message-id: <>

Judy, do I remember correctly that you have the Canon G5?

If so, I remembered reading the DPreview report on that camera. They
found the G5 was 3/4 stops hotter (faster) than other similar digital
cameras. So, for the "sunny 16 rule": your G5 setting of 200 might be
closer to an ISO of 320, Now that (in many cases) is a real gift,
BUT..... sunny 16 at F/16 and 1/320 is equal to your described setting
of F/5.6 and a shutter speed of 1/2600. Work with a lot of both bounced
and direct sunlight (Beach, snow) and you might need 1/4000.

The G5 has an odd shutter, at some zoom focal lengths you can get
1/2000 at other zoom focal lengths you can only get 1/1250 (all of
which is better than my F707's 1/1000!).

See here:

On Wednesday, June 9, 2004, at 10:34 PM, Tom Ferguson wrote:

> On Wednesday, June 9, 2004, at 09:35 PM, Judy Seigel wrote:
>> <SNI>
>> 1. The camera is set on Av (Aperture priority, aperture 5.6; ASA 200,
>> flash off, auto focus). Why is every shot taken in the sun totally
>> washed
>> out, monumentally overexposed ? What can I do? (Shade is fine, VG in
>> fact.)
> At ISO 200 and F/5.6 your sunny exposure should be 1/1600. Sunny 16
> rule says 1/200 at F/16 = 1/400 at F/11 = 1/800 at F/8 = 1/1600 at
> F/5.6. Does your camera have a shutter speed that fast? My "walk
> around" dig maxes out at 1/1000, so I would always be 2/3 stop
> over-exposed in bright sunlight using your settings. That isn't
> anything to worry about with a film camera and negative film. With a
> dig and 8 bit Jpgs, your files are seriously messed up. Try using ISO
> 100 and/or F/8. Of course, if your camera has a faster shutter than
> mine, then "I have no idea"!
Tom Ferguson
Received on Thu Jun 10 11:10:04 2004

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