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Message: <blockquote data-quote="RJM" data-source="post: 1425999" data-attributes="member: 66340">Hi Cristian, FYI, the camera also has a 2.3x digital TC function that allows full resolution shots at 2.3x the optical focal length. When enabled, the SX1 becomes a 2.3x-46x or fl=64.4-1288mm lens at full 3648 x 2736 rez.  It is this digital TC feature, and not the "trick" function, that is hyped on the <a href="http://cweb.canon.jp/camera/powershot/sx1issp/index.html" target="_blank">Japanese SX1 website</a>. According to the manual, "Digital zoom is fixed at the selected zoom factor, and the focal length shifts to maximum telephoto. This enables a faster shutter speed and less chance of camera shake than a shot taken at the same angle of view with Standard Zoom." No mention about loss of image quality. Looking back at my pics, it seems to work pretty well too I think. When I first got the camera I shot some pics with the 2.3x enabled. See the pic below. Unfortunately, I had not read the manual thoroughly and had it confused with the "trick" function so shot at a lower 1600x1200 rez. This may be even better than the "trick" function since there are more pixels available for tight crops. I should also say the lens is threaded for 52mm filters, so it could be possible to fit an optical TC, but it would literally hang by a thread and I would be worried the extra weight would strain the zoom motor. Rick</blockquote>