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Pentax Optio M40
| Author | Cliff Smith |
| Published | 26th Oct 2007 |
| Manufacturer | Pentax |
| Price | £109.79 (Exc VAT) |
| as reviewed | £129.00 (Inc VAT) |
| Latest Price |
| Features | ![]() |
| Image Quality | ![]() |
| Value | ![]() |
| Overall | ![]() |
Over the next few pages we show a range of test shots. On this page the full size image at the minimum and maximum ISO settings have been reduced to let you see the full image, and a series of full resolution crops have taken from original images at a range of ISO settings to show the overall image quality.


Image quality at the minimum 50 ISO is very good, with no noise and plenty of fine detail.

Image quality is still good at 100 ISO, although there is a tiny amount of colour speckling in the darker areas.

Still no major problems at 200 ISO.

Noise is starting to reduce image quality at 400 ISO but the level of fine detail is still good.

Even at 800 ISO this would look OK in a small print.

The M40's maximum 3200 ISO is higher than average, but image quality at this setting is low.

The image is quite noisy at 1600 ISO, but I've seen lots worse.

This is the full-frame image at 3200 ISO.
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