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A range of test shots are shown over the next few pages. Here, the full size image has been reduced for bandwidth purposes, and a crop taken from the original full resolution image has been placed below it in order for you to gain an appreciation of the overall quality. The following pages consist of resized images so that you can evaluate the overall exposure. For those with a dial-up connection, please be patient while the pages download.
1/400th sec, f2.8, ISO 100
At the minimum ISO sensitivity the image is, of course, of the best quality. It is also accurately exposed and has plenty of detail.
1/400th sec, f2.8, ISO 200
200 ISO, and already there is a hint of image noise creeping into the darker areas of the image, although colour balance remains good.
1/200th sec, f7.1, ISO 400
At 400 ISO the camera suddenly switches to minimum aperture, producing a longer shutter time. Image noise is now very noticeable as colour speckling in the darker areas.
1/500th sec, f7.1, ISO 800
At 800 ISO the image is now very noisy, and this has a seriously detrimental effect on picture quality.
1/640th sec, f7.1, ISO 1000
An extra 1/3rd of a stop of speed, but a major increase in image noise. Colour fidelity has also broken down, with a slight green cast over the whole image.
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