Resolution to my Resolution issue?

[Goondockjeff]

Hiya folks.

I have to 20D and use two different lenses "one is an L glass lens the 70 - 200 f4 and the other is a tamron 28 - 70 DI XR"

I have been a shooting machine since getting the camera but I had not noticed until recently that a lot of the images I capture are coming out at lower max resolutions. I have the camera set at the largest .jpg setting as I do not know enough about RAW yet, however I am often ending up with photos in the 1024 x 683 range or the 1280 x 853 range. I dont get it? I put a lot of my stuff up on flickr and I see folks with much lower megapixels getting higher resolution photos! YIKES! HELP!?!?!

[MrThanh]

Just double check the image size whenever you change shooting modes. Every mode remembers the last size/quality setting that you input for that particular mode.

[dhbailey]

A possible problem is that you have set the CustomFunction1 to option 1, so that when you press the SET button it changes the Resolution. I had mine set that way, thinking I would use it to switch easily between RAW and jpgL-fine, only to find that I forgot I had it set that way and kept accidentally changing the resolution when I didn't want to.

Check that possibility.

[gasrocks]

Yes, just in case no one mentions it - 3504 X 2336 is what they should be (largest .jpg 20D)

[tim]

Just leave it on Large/Fine JPG, if it ever comes out as different it's only because you've changed it. There aren't many good reasons to change down from max resolution.

[aam1234]

Have a question. If in you are say in jpeg L/F, does the resolution varies from pic to pic (depending on the subject) or is it fixed no matter what the subject is.

[wolf]

Yes, file size will vary from photo to photo. I have seen files on my 20D vary as much as 3 mpg (JPG) shooting in Raw plus JPG format using the same identical settings etc, but shooting different scenes. I have seen only about 1mpg difference in the Raw files when shooting various scenes.

[tim]

File size will vary, the number of pixels on one side will never vary if you stay on Large. Medium and small jpgs will have less pixels.

[aam1234]

Thanks Wolf. I was referring to what Tim said.

Ok, another question. How do you know what pixel dimensions does your camera produce (at different settings).

[cecilc]

I can think of two ways to do that ....

The more involved way is to take a shot in each of the recording modes and check the pixel diimensions ....

But the easy way is to look in your manual (Page 46). I haven't seen a Canon user manual yet that didn't have a table of the recording modes available with the corresponding pixel dimensions .....