Pro Photo HOME
Go Back   Pro Photo HOME > Professional Digital Camera Discussion - Full Access for Basic Members > Canon EOS Digital SLR with 1.6X sensors

Notices

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-19-2009, 01:31 PM
DougAxford DougAxford is offline
Premium Lifetime Member
 
Join Date: Mar 2002
Location: Ontario, Canada
Posts: 1,161
DougAxford
HELP Canon adjustment question

This sounds so newbie,

My new 50D is more than 1/2 stop overexposing compared to my 2 40D's and they have to match. I can't seem to find a way to make the adjustment on either so that they will match exposure on the same settings when used on Manual. I never use anything but Manual. Yes, I can compensate by adjusting aperture but I want htem all to match a lot closer than 1/2 stop.

Color adjustments are easy but I can't find exposure adjust.

Thanks
Doug

  


White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2  
Old 05-19-2009, 08:24 PM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,145
Doug_Kerr
Re: HELP Canon adjustment question

Hi, Doug,

Quote:
Originally Posted by DougAxford View Post
My new 50D is more than 1/2 stop overexposing compared to my 2 40D's and they have to match. I can't seem to find a way to make the adjustment on either so that they will match exposure on the same settings when used on Manual.
Indeed, there is no "exposure compensation" for Manual mode. If you want a different exposure, you are expected just to choose one (with a different aperture and/or shutter speed).

One possibility is for you to set the ISO sensitivity higher on the 50D than the 40D, which will give a lower exposure result on the 50D than you are getting now. You can only set the ISO sensitivity in 1/3 stop steps (and in fact that option - rather than whole stop steps - needs to be chosen in the CFs). But perhaps you need a shift of 2/3 stop.
__________________
Best regards,

Doug

Visit The Pumpkin, a library of my technical writings:
http://doug.kerr.home.att.net/pumpkin

"Make everything as simple as possible, but no simpler."

White Balance so easy, even our 5 year old can do it.- Melissa Strickland


Last edited by Doug_Kerr; 05-19-2009 at 08:35 PM.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3  
Old 05-19-2009, 08:59 PM
DougAxford DougAxford is offline
Premium Lifetime Member
 
Join Date: Mar 2002
Location: Ontario, Canada
Posts: 1,161
DougAxford
Re: HELP Canon adjustment question

Thanks Doug.

I suspected there was no adjustment possible in Manual Mode.

I hadn't honestly remembered that I could do it with ISO. Not what I would prefer to do but it's certainly the best option if there is no other and it's at least easier than digging through the menus that differ so much between models.

Doug

White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4  
Old 05-20-2009, 09:22 AM
Will_Mass Will_Mass is offline
Premium Lifetime Member
 
Join Date: May 2003
Location: MD/D.C. suburbs
Posts: 722
Will_Mass
Re: HELP Canon adjustment question

Am I confused?

If the 50 is overexposing, relative to the 40's, wouldn't you want to lower the ISO (on the 50) to compensate?
__________________
You can only fish for so long before ya gotta throw a stick of dynamite in the water.

White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5  
Old 05-20-2009, 09:35 AM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,145
Doug_Kerr
Re: HELP Canon adjustment question

Hi, Will,

Quote:
Originally Posted by Will_Mass View Post
Am I confused?

If the 50 is overexposing, relative to the 40's, wouldn't you want to lower the ISO (on the 50) to compensate?
Well, of course. (I was thinking of a distantly related issue involving metering!)

Sorry!

Best regards,

Doug

White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #6  
Old 05-20-2009, 11:54 AM
KevinStecyk KevinStecyk is offline
Premium Lifetime Member
 
Join Date: Nov 2004
Location: Calgary
Posts: 882
KevinStecyk
Re: HELP Canon adjustment question

When I spoke with a technician of a major meter manufacturer (it doesn't matter which one), he indicated that cameras typically vary from camera to camera and meters vary from meter to meter. The meter itself (same brand and model) can vary 1/3 of an ƒ stop. In other words,

Ten Canon 50Ds using one meter would like show some variance.

And,

One Canon 50D using ten different meters of the same brand and model would like show some variance.

It would be great if everything were precise and exact.
__________________
Kevin H. Stecyk

White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #7  
Old 05-20-2009, 01:34 PM
Doug_Kerr's Avatar
Doug_Kerr Doug_Kerr is offline
Premium Lifetime Member
 
Join Date: Oct 2003
Location: Weatherford, Texas
Posts: 2,145
Doug_Kerr
Re: HELP Canon adjustment question

Hi, Kevin,
Quote:
Originally Posted by KevinStecyk View Post
When I spoke with a technician of a major meter manufacturer (it doesn't matter which one), he indicated that cameras typically vary from camera to camera and meters vary from meter to meter. The meter itself (same brand and model) can vary 1/3 of an ƒ stop. In other words,

Ten Canon 50Ds using one meter would like show some variance.
I think metering is not the issue here. I think the issue is, for the same ISO sensitivity and same camera exposure (aperture and shutter speed), a difference in exposure result.

Best results,

Doug

White Balance so easy, even our 5 year old can do it.- Melissa Strickland

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:44 AM.


ColorRight





Professional Photo Resources Atlanta

Photo Barn


Geo Visitors Map

Content Relevant URLs by vBSEO 3.1.0