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yowsa Jan 10, 2003 6:11 PM

S230--Sharpness of pictures taken when zooming
Hi All:

Just wondering if everyone using the S230 is experiencing the same problem with image sharpness when using maximum zoom while taking pictures. I love my camera and it takes awesome pics when not zooming in, but the picture quality just plain sucks when I'm zooming in.

Please let me know if others are experiencing the same problems, and if not, whether my camera could be defective or something.


dzane Jan 10, 2003 9:04 PM

Digital Zoom?
Do you understand the whole digital vs optical zoom thing? That is, if you have digital zoom turned on, then up to a certain point (2X zoom for this camera) you will be using the zoom lens to zoom in and all will be sharp and clear. After that, if you keep zooming it uses "digital" zoom, which is really just cropping the picture inside the camera. Once you start into the digital zoom, the image quality will degrade significantly the more you zoom in. You can turn off digital zoom (which I do) in the setup of the camera. It doesnt hurt to turn it off, because if you want to you can always accomplish exactly the same thing later using the Canon (or any) editing software on your PC after you download the image.

If you understand all that already, and that's not it, I apologize. I have a 230 and all my zoomed images are extremely sharp.

yowsa Jan 10, 2003 9:09 PM

Thanks for your reply...I am using Optical Zoom...not Digital. I do understand the difference, and disabled the digital zoom in my camera.


rimbo Jan 11, 2003 5:12 PM

Digital Zoom?
Hi dzane,

I have a Canon Powershot A40 with a 3X optical and 2.5X digital zoom and I use both. I get better pictures on clear, sunny days with the digital but tend to stick to the optical zoom the rest of the time. Also camera shake is magnified much more and so there is more chance for the pictures to come out blurry. I would experiment more with the digital zoom more before ditching it.

Rimbo 8)

dzane Jan 11, 2003 6:27 PM

Digital Zoom?
Perhaps I don't understand something about the digital zoom.

Isn't it just doing an in-camera crop? And when it does that, don't I "lose" resolution of the resulting image?

If it is, why mess around trying to get that framed exactly right in the field, with a tiny lcd screeen, and maybe messing it up, when I can accomplish exactly the same thing later at my leisure using photoshop?

Either way, don't I end up with the same image resolution and quality? Is there something about using the zoom in the camera that leads to a better quality image file than doing it later?

rimbo Jan 13, 2003 6:06 AM

Digital Zoom?
Hi dzane,

I'm not an expert on digital zooms but I think I read somewhere that it magnifies rather than crop the picture. When you reach the end of the 3X optical and then go into the digital zoom, the image is just magnified by 2.5 times. In this case is cropping and magnifying the same thing? All I know is that under good conditions the extra zoom power gives 'reasonable' results on a good clear day.

rimbo 8)

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