Grainy, Spot Filled Images when using Manual Modes Only
I have a Canon 20D and am using a Canon 28-135 IS lens with it. The camera was bought refurbished about a year and a half ago. The lens is only a few months old. I notice that when I take pictures in the manual modes like Aperture Priority etc, my pictures turn out grainy and the dust spots are a lot more prominent. When I shoot in the automatic modes there is no graininess and the dust spots are very few. The dust spots I know can be taken care of with a cleaning, but the graininess really concerns me. I had a similar issue about a year ago and took it into a repair shop because the camera wouldn't even take pictures in the manual modes at all. They fixed the problem, but couldn't really tell me what they did. And now it appears that the problem has come back. Any idea what this could be?
Re: Grainy, Spot Filled Images when using Manual Modes...
It sounds like the aperture is getting set very high. If the aperture is a high number, the lens opening is very small which lets less light in and would cause a dark image. This would also show any dust that is in or on the lens or image sensor. The dust doesn't usually show on apertures with a larger opening (smaller number). Make sure your aperture is being set to a reasonable number, probably no higher than 8 or so.
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1.Remove the battery, lens and CF card. Allow the camera to sit without power for 20 minutes and then reinsert a fully charged battery.
2.Turn the camera on and push the shutter button as if you were taking a picture.
3. If you don't get the error message reattach the lens and insert the CF card.
4. Check the below canon eos 20d service manual link: http://goo.gl/YtVLQR
it will help you to save a lot of money
Hope it helps, Thanks
Could be that ISO settings were accidentally changed. The main annoyances with high ISO setting are the noisy (grainy as you say) images. Check the iso settings if you are shooting in modes other than automatic shooting.
When you use auto mode on most point and shoot digital cameras ( which
includes the F717) the camera software gets to choose aperature,
shutter speed, and ISO setting. When the ISO setting is used at the
faster ISOs, the images get digital 'noisy' very quickly. There is a
much higher noise level in consumer digicams at the higher ISOs,
because the sensor chip is much smaller than in the digital SLRs. F2.0
suggests yoiu are shooting at the maximum aperature of your lens and
that the light is pretty dim. If you learn to use your camera in
the Av ( aperature preferred) mode at ISOs of 50 or 100, most of the
noise you are describing will disappear. The camera should take very
nice images at ISOs less than 200.
Consult your manual on aperature preferred or manul setting of the ISO speed
HI BRIAN ,,I AM SAGHA CAMERA REPAIRER,I THINK UR PROBLEM OCCURS DUE TO JAMMING OF PLASTIC MOUNT ON THE METAL BODY OF 20D.TRY THIS
1} LUBRICATE THE JUNCTION WHERE LENS GET ATTACHED TO THE BODY WITH KEROSENE THEN TRY TO RELEASE THE LENS.REMOVE THE BATTERY FROM CAMERA ,TRY AND HEAT UP THE JUNCTION WITH HAIR DRYER A LITTLEBIT THEN TRY TO RELEASE THE LENS.
2}IF THIS THING ALSO DOESN'T WORK THEN YOU HAVE TO SACRIFICE THE LENS PLASTIC MOUNT PUT SOME SHARP KNIFE LIKE OBJECT IN THE JUNCTION OF LENS & CAMERA & THEN PUSH IT UPWARDS WHICH WILL BREAK ONE OF THE PLASTIC LENS MOUNT COLLOR AND LENS WILL COME OUT WITHOUT DAMAGING YOUR CAMERA .LATER YOU CAN GET REPLACED THE LENS MOUNT FROM SERVICE PERSON. BUT NOW ATLEAST YOU CAN USE CAMERA WITH OTHER LENSES.
If you see the spots on the images after transferring them to another device, my first guess would be there is a speck of dust on the CCD. It just works its way in there sometimes. You could do the surgery yourself and blast it lightly with some canned air to remedy that.
If you're not transferring the images and you're just reviewing them on your camera, it could just be a spot on the LCD. This could also be remedied with some canned air and minor surgery.
You probably have the White Balance set to a setting other a
than "Auto White Balance" (AWB). On the top of the camera, above the exterior LCD panel, there is the "AF-WB" button. Turn the camera on--past "on" to the bent line. Press the AF-WB button once. On the left side of the exterior LCD panel there is a vertical, reticular box with the symbol of the selected setting for WB. Normally, the setting should be set to AWB. If it is not, turn the command dial at the back of the camera until "AWB" is showing. Try shooting again-the color should be better.
In the "auto" modes (green box, portrait, landscape, etc) the AWB is automatically set. In the "advanced" modes (P,Tv, etc) the WB is manually set for whatever light source you are using. The command dial may have been accidently turned to different setting. Hope this helps.
Have you done the basic unsharp masking after RAW processing? Normally you'll find a 500% strength, 0.3 pixel and a threshold of 1 or 2 brings out the detail masked by the AA filter very well. DOn't bother with the sharpening in PS ACR....it's too crude and doesn't account for how big an enlargement you'll be making. In other words, there's no control.
Best of luck....
I too have a Canon 20D and receive the same message. Zoombrowser works fine with my Canon G3, so the way I get around this problem is by using the other software that came with the 20D called EOS Viewer. This software will download your images every time. You might try sending a note to Canon's support team on the Canon website. They are very quick to respond to all questions and they can probably respond to this question too.