20D Settings Inconsistency

I'm very confused by this and cannot find an explanation.

I have a 20D with a Canon 70-200 f4L lens attached.

The following was done zoomed to 200

One: Using the Basic Zone setting of Sports, I aim at a given outdoors area
and it shows the camera is going to take a picture using a shutter speed of
1/2000 at f7.1 The end result is a decent picture.

Two: Using the Creative Zone setting of Tv and setting the shutter speed to
1/2000, the lcd indicates a wide open aperture of 4.0 is insufficent, and
the resulting picture *is* underexposed.

Three: Using the Creative Zone setting of Av, and setting the aperture to
7.1 results in the camera setting the shutter speed to 1/500 of a second,
and taking a perfectly acceptable picture.

I can, to some degree, understand the different shutter speed selections
between 'One' and 'Three'. As I understand it the camera is deciding (in
Three) that at f7.1 a shutter speed of 1/500 will produce the 'best'
picture...so no big deal there.

What has me totally boggled is why a shutter speed of 1/2000 of a second in
situation 'One' is so very different from a shutter speed of 1/2000 of a
second in situation 'Two'. The resulting picture in 'Two' is unusable unless
it were to be tweaked in Photoshop or something similar.

WW

Are you using the same metering mode in basic and creative zones? Have
you accidentally moved the Quick Control dial, creating an unwanted
exposure bias?
--David

I'm very confused by this and cannot find an explanation.

I have a 20D with a Canon 70-200 f4L lens attached.

The following was done zoomed to 200

One: Using the Basic Zone setting of Sports, I aim at a given outdoors area
and it shows the camera is going to take a picture using a shutter speed of
1/2000 at f7.1 The end result is a decent picture.

Two: Using the Creative Zone setting of Tv and setting the shutter speed to
1/2000, the lcd indicates a wide open aperture of 4.0 is insufficent, and
the resulting picture *is* underexposed.

Three: Using the Creative Zone setting of Av, and setting the aperture to
7.1 results in the camera setting the shutter speed to 1/500 of a second,
and taking a perfectly acceptable picture.

I can, to some degree, understand the different shutter speed selections
between 'One' and 'Three'. As I understand it the camera is deciding (in
Three) that at f7.1 a shutter speed of 1/500 will produce the 'best'
picture...so no big deal there.

What has me totally boggled is why a shutter speed of 1/2000 of a second in
situation 'One' is so very different from a shutter speed of 1/2000 of a
second in situation 'Two'. The resulting picture in 'Two' is unusable unless
it were to be tweaked in Photoshop or something similar.

WW

DERWENT 20D Settings Inconsistency
Thu, 19 May 2005 16:00:55 GMT, "WormWood"

I'm very confused by this and cannot find an explanation.

I have a 20D with a Canon 70-200 f4L lens attached.

The following was done zoomed to 200

One: Using the Basic Zone setting of Sports, I aim at a given outdoors area
and it shows the camera is going to take a picture using a shutter speed of
1/2000 at f7.1 The end result is a decent picture.

Two: Using the Creative Zone setting of Tv and setting the shutter speed to
1/2000, the lcd indicates a wide open aperture of 4.0 is insufficent, and
the resulting picture *is* underexposed.

Three: Using the Creative Zone setting of Av, and setting the aperture to
7.1 results in the camera setting the shutter speed to 1/500 of a second,
and taking a perfectly acceptable picture.


Try setting the ISO rating to 1600 or 3200.

The ability to alter the sensitivity of the "film" on the fly, and for
each shot is one of the big difference I've discovered between
shooting film and shooting digital.

PRAR
--
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"WormWood" wrote in message
news:XK2je.1416497$8l.824697@pd7tw1no...
I'm very confused by this and cannot find an explanation.

I have a 20D with a Canon 70-200 f4L lens attached.

The following was done zoomed to 200

One: Using the Basic Zone setting of Sports, I aim at a given outdoors
area and it shows the camera is going to take a picture using a shutter
speed of 1/2000 at f7.1 The end result is a decent picture.

Two: Using the Creative Zone setting of Tv and setting the shutter speed
to 1/2000, the lcd indicates a wide open aperture of 4.0 is insufficent,
and the resulting picture *is* underexposed.

Three: Using the Creative Zone setting of Av, and setting the aperture to
7.1 results in the camera setting the shutter speed to 1/500 of a second,
and taking a perfectly acceptable picture.

I can, to some degree, understand the different shutter speed selections
between 'One' and 'Three'. As I understand it the camera is deciding (in
Three) that at f7.1 a shutter speed of 1/500 will produce the 'best'
picture...so no big deal there.

What has me totally boggled is why a shutter speed of 1/2000 of a second
in situation 'One' is so very different from a shutter speed of 1/2000 of
a second in situation 'Two'. The resulting picture in 'Two' is unusable
unless it were to be tweaked in Photoshop or something similar.

WW


Check to see what ISO setting the camera chose in Sports Mode.

The camera in 'One' may of chosen a faster ISO than you did in 'TWO'
resulting in the underexposure.

Check to see what ISO setting the camera chose in Sports Mode.

The camera in 'One' may of chosen a faster ISO than you did in 'TWO'
resulting in the underexposure.

Yes, ISO is boosted in Sports mode.

"Charles Schuler" wrote in message
...



Check to see what ISO setting the camera chose in Sports Mode.

The camera in 'One' may of chosen a faster ISO than you did in 'TWO'
resulting in the underexposure.

Yes, ISO is boosted in Sports mode.


Thanks people. I am feeling like a dummy. I forgot that in Basic Zone the
camera will choose an ISO iso range from 100 to 400. In this instance it
chose 400, while in my example 'Two' it remained at 100. I suspected it was
something very simple....I was staring right at it, but not 'seeing' it.

WW

Thanks people. I am feeling like a dummy.

Join the group. Even a cell phone intimidates many of us. The modern
technology that we avidly buy is often so "feature rich" that the basic
functions are obscured. Life just gets more complex!

Question: Could Albert Einstein program a VCR? Answer: Why would he want
to?

On Thu, 19 May 2005 16:00:55 +0000, WormWood wrote:


Two: Using the Creative Zone setting of Tv and setting the shutter speed to
1/2000, the lcd indicates a wide open aperture of 4.0 is insufficent, and
the resulting picture *is* underexposed.

Some quirks of the 20D a

In sports mode it will automatically select a film speed of 1600 ot 3200.

There is a custom function to allow ISO expansion. This will permit the
camera to increase ISO to match settings you choose or lighting.

Best advise is to take one function at a time and read up on it. When you
understand that one, choose another until all of a sudden, you are a
proficient 20D users!

Douglas

"Douglas" wrote in message
news
On Thu, 19 May 2005 16:00:55 +0000, WormWood wrote:

snippage


Best advise is to take one function at a time and read up on it. When you
understand that one, choose another until all of a sudden, you are a
proficient 20D users!

I'm making headway...there's a lot to learn...I guess that's why this camera
is the gem it is.

WW

Charles Schuler wrote:

Check to see what ISO setting the camera chose in Sports Mode.

The camera in 'One' may of chosen a faster ISO than you did in 'TWO'
resulting in the underexposure.


Yes, ISO is boosted in Sports mode.


I tried running my D70 in auto-ISO for a while but found it frustrating
that I never knew what the durn thing was going to do. Now I mess up &
leave it at high ISO when I don't mean to but at leat I know ho to blame.


--
Paul Furman
http://www.edgehill.net/1
san francisco native plants