- Page 1 Sigma SD15
- Page 2 Design and Features 1
- Page 3 Design and Features 2
- Page 4 Performance and Results
- Page 5 Features table
- Page 6 Test Shots – ISO Performance
- Page 7 Test Shots – Detail And Lens Performance
- Page 8 Test Shots – Exposure Evaluation
”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. These pictures were taken indoors using shaded natural light. ”
This is the full frame at minimum ISO.
At 100 ISO the JPEG mode image quality is good, with plenty of fine detail.
Already at 200 ISO there is visible image noise, although it is very fine grained.
400 ISO and image noise is more obvious, and saturation is affected.
Image quality at 800 ISO is pretty poor. It may look like film grain, but it’s still noise.
1600 ISO and the image quality is very poor, with distorted colour.
This is the full frame at 1600 ISO.