SFRplus options are offered to support a wide range of image testing applications.
Options include:
Charts are available in tfive main sizes with variations depending on the grid dimensions selected. It is recommended that the medium sized charts be used to test imaging systems with sensors up to 12 MP, the large charts be used for testing of sensors above 12 MP and up to approximately 24 MP, and the extra-large charts be used for sensor sizes above 24 MP.
Paper Size (Including Margin)
Square Dimensions | ||
---|---|---|
5x9 | 5x7 | |
X-Small | 8.5" × 15" | 8.5" × 10" |
Small | 14" × 24" | 14" × 20" |
Medium | 24" × 40" | 24" × 34" |
Large | 44" × 60" | 44" × 60" |
X-Large | 44" × 74" | 44" × 64" |
Active Area
The active area of the chart includes white space above and below the top and bottom distortion bars. It is slightly larger than the printed area, which is bounded by the distortion bars on top and bottom. White space is included in active area because test images of the chart must include this white space in order to enable automated processing in SFRplus software.
Square Dimensions | ||
---|---|---|
5x9 | 5x7 | |
X-Small | 7.85" × 15" | 6.75" × 10" |
Small | 12.5" × 24" | 13.5" × 20" |
Medium | 22" × 39.22" | 22" × 33" |
Large | 33" × 59" | 40" × 59" |
X-Large | 42" × 72" | 42" × 59" |
Inclusion of the color chart enables testing of color accuracy. If the color option is selected, the "focus star" pattern that aides in focusing is replaced by a 20 patch color chart.
Pre-distorted charts offer the ability to map the outer edges of a wide angle or fisheye lens using SFRplus. These distortion levels are available
Level | Matrix (5x7) | Matrix (5x9) |
---|---|---|
No distortion | [0 0] | [0 0] |
Distort | [0.833 1.123] | [0.833 1.375] |
Distort+ | [1.167 1.577] | [1.167 1.982] |
Ultradistort | [1.333 2.313] | [1.333 2.958] |
We do not recommend using semi-gloss paper for wide angle lenses or pre-distorted charts
Custom variations of the SFRplus chart are available. Please contact sales@imatest.com to discuss your specific requirements.
Contact: sales@colorspace.com.cn
Phone: 15817270587
Tel: 400-886-3881(周一至周五 9:00~18:00)
Email: sales@colorspace.com.cn
Add: South Building #2-1101, Lv Di Qi Hang Office Building, Hou Sha Yu, Shun Yi District, Beijing, China