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A range of test shots are shown over the next two pages. Here, the full resolution image has been reduced in size for bandwidth purposes, and a crop (taken from the original full resolution image at Adobe ImageReady jpg quality 60) follows each image in order for you to gain an appreciation of the overall quality. The next page consists of resized images (to Adobe ImageReady jpg quality 50) so that you can evaluate the overall exposure. For those with a dial-up connection, please be patient while the page downloads.
Even against a bright blue sky, there is plenty of fine detail in the branches of this tree. Accurate zoom control makes it easy to frame pleasing compositions.
6mm (approx. 36mm equivalent), f4.8, 1/250sec, ISO 50
At the widest end the Z20’s lens is equivalent to 36mm, which isn’t very wide but is sufficient for most normal subjects. Note the lack of distortion in the corners and the high retention of detail.
6mm (approx. 36mm equivalent), f3.2, 1/250sec, ISO 50
ISO 50 - At this minimum 50 ISO setting, there is no image noise and the picture is full of pin-sharp detail.
ISO 100 - At the slightly higher 100 ISO setting there is still no image noise, and it is easy to see the netting over the cathedral windows.
ISO 200 - At 200 ISO there is still very little noise, but some detail is being lost. It is harder to make out the net over the windows.
ISO 320 - At the maximum 320 ISO setting the image noise is quite pronounced on the darker areas, but still quite mild on the lighter areas. A lot of detail has been lost though.