Question about Canon Rebel XT / EOS 350D Digital Camera

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Aperture reads "00"

In all creative modes the aperture settings reads "00" and I cannot change it. I have tried replacing the battery but that didn't help. Everything else seems to be working properly. My Rebel XT is about 15 months old and I've taken about 5000 photos.

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Re: aperture reads "00"

This is something you normally only see when you are using a non standard lens that doesn't transmit the aperture to the camera.

If you are using the original 18-55mm lens it may either be faulty or the contacts need cleaning. A dry cotton bud should do this. Also, try another lens if you have access to one.

Posted on Nov 10, 2007

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In creative mode I can not adjust aperture or time for any of the functions. My camera is cannon 500D

Only in the Aperture mode and in Manual mode, you can choose the desired Aperture. It is all in the manual page 53, 54 and 55.
You can change Blurring / sharpening of the background (this most of the time will change the Aperture) you can change the brightness (will change the shutter speed) and you can add some image effects and choose for single shot, continues and self timer.
You can't directly choose for changing A, or S.

Nov 22, 2014 | Cannon Digital Cameras


How does aperture setting affect a photograph?

The aperture is the opening in the lens through which light passes to the image sensor. Changing the aperture setting allows you to control the depth of field of a photograph. When the aperture is opened to a widersetting, (indicated by a lower f-stop number) more light is passed to the imagesensor, creating more shallow depth of field. Closing the aperture (indicatedby a higher f-stop number) allows less light to pass to the image sensor,creating wider depth of field.

NOTE: The aperture setting is one of three primary settings usedto control the overall exposure of a photograph. The other two primary settingsare ISO and shutter speed. Because the three settings work together to produce the overall exposure for a photograph, changingthe aperture setting will require complimentary changes to either the ISO or shutter speed to produce a properly exposed photograph. These changes will bemade automatically by the camera in the Auto, Program, Aperture-priority andShutter-priority modes.

There are two ways tocontrol the aperture setting on the camera:
  • Aperture-priority mode (A) - When shooting in Aperture priority mode (A), you set the aperture value and the camera automatically sets the optimum shutter speed for you.
  • Manual mode (M) - When shooting in Manual mode (M), you control both aperture and shutter speed, which gives you maximum creative control to achieve the exact results you want.

on Jan 08, 2011 | Digital Cameras

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I'm having problems with the settings on my Canon EOS 400D. When I take pictures in AV mode I can get quality pictures but in TV or M modes the pictures always come out so dark even when taking them...

You need to understand the relationship and teractivity of aperture, shutter speed and iso. In Av mod, you choose the aperture and the camera makes thw shutter speed agjustment, In Tv mode, you set the shutter speed and the camera makes the aperture adjustment, In manual, you have to set both shutter speed and aperture manually. If the ISO mode is set to AUTO, the camera chooses the sensors sensitivity to light automatically. Change to specific ISO
(200-400 for daylight and 799-1600 for night). Take a picture in AV mode and note what shutter speed the camera chose. Then switch to TC mode choose the same shutter speed and see if camera chose the same aperture(f-stop) you chose in first shot. Change to Manual and choose same f-stop and shutter speed the camera chose for you in the other modes. Compare all three photos. They should be almost if not exactly the same exposure wise.
In Tv mode choose a dlowers shutter speed, In Manual choose a combo of slower shuuter and wider f-stop(smaller number). Read your manual.

Jan 02, 2011 | Canon EOS 400D / Rebel XTi Digital Camera

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I have a Nikon d40X. When I attempt to take a picture, the shutter speed is EXTREMELY slow. Because of this, my pics are all blurry. I am not sure what caused this to start happening. Can someone please...

Steve - the Nikon dSLR cameras are very capable. Check the position of the mode dial:


The image above has it set to "P" or Program mode. Change it to "AUTO" and take a picture of a well lit scene (preferably outside in the daytime). You should get a properly exposed image. If the mode dial is set to "M" or Manual mode, the shutter speed is probably too low, and the aperture either too small or large if the image is dark or light, respectively. You'll have to turn the knobs on the front AND rear to adjust BOTH shutter speed and aperture (f-stop) to find the right combination of exposure time and aperture opening allowed into the camera to suggest motion (more blurry with a slow shutter - or more sharp with a fast shutter), in addition to DOF or depth of field.

You may have a similar issue when set to "P". If you are in this mode, the camera will attempt to determine the best shutter and aperture settings for you. You can veiw the settings chosen in the view finder. Likewise, you may override either shutter speed or aperture changing the aperture OR shutter speed control knobs. The camera will automatically change the other - to provide a properly exposed image.

Review the manual here. Page 39 details the mode dial and how it works. Page 18 discusses the
"Digital Vari-Program" modes depicted by the icons, and the "AUTO" label. These modes should be avoided, unless you are happy with "snapshot" type pictures. The most creativity will come from using the camera in one of the other modes: M,A,S or P. Taking the time to learn them will greatly increase your enjoyment of the camera and resulting images.

I hope this was a good starting point for you & good luck!

Nov 01, 2010 | Nikon D40x Digital Camera

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I have copied and pasted someone elses problem, because it is the same one I am having. So if I want to use the aperture for taking Manual photos I cannot do this because when it goes off of F22, it reads...

Lock the aperture ring at its smallest opening (in this case, F22). Change the aperture setting by turning the subcommand dial (the one in front, unless you changed it in the setup menu).

Of course, you can only change the aperture directly in Manual and Aperture-Priority modes.

Mar 23, 2010 | Nikon D80 Digital Camera with 28-80mm Lens

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I have a Canon T1i Rebel. My aperture is frozen in manual mode. Works fine in AV mode. I have checked it out on 3 lenses. The camera knows I have changed the lens, I have taken the battery out all night, I...

Not knowing your experience level, I want to make sure that you are (in the Manual mode) attempting to change the aperture by holding the aperture button with your thumb while rotating the main dial to increase or decrease the aperture value. If you are doing this, and the aperture value isn't changing, the camera needs service. You are probably still under warranty, so this should not cost you anything.

If you're in the USA, you can set up the repair service yourself at this link.

Mar 12, 2010 | Canon EOS 500D / Digital Rebel T1i Digital...

1 Answer

Camera features canon 18-55 digital cmera EOS 350 D

It does different things depending on the camera settings and only works in the creative zone settings not the automatic settings.

In AV mode it changes the aperture
In Tv Mode it changes the shutter speed
In M mode it changes the shutter speed unless the AV button is pressed when it then changes the aperture

Apr 06, 2008 | Canon Rebel XT / EOS 350D Digital Camera

2 Answers

Will a lenses without the A setting on the apeture ring work on a DS

They will - fully open in Av mode, and with any aperture in manual mode - after you allow the Ds through the custom settings menu to use aperture settings different then "A". To choose correct exposure with such a lens in manual mode you can use the AE-button - it stops down the aperture, reads the EV and sets the shutter speed according to the chosen aperture.

Sep 08, 2005 | Pentax *ist DS Digital Camera

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