Czech TV’s Multi-Scanner Analysis, Comparison and Selection
Czech TV is the National Television Company for the Czech Republic.
As part of Czech TV's film scanner tender process, 4TB of UNCOMPRESSED RAW 16-bit color TIFF files were scanned from the same rolls of film BY THE MANUFACTURERS of the 4 scanner finalists, including the Lasergraphics Director 10K (D10K).
The Czech TV evaluation committee objectively ranked the scan data in an exhaustive 'blind comparison.' The D10K blew away the other three competitors on ALL image quality measures, including resolution, color rendition, digital noise, dynamic range, and consistency of image aspect ratio. Here’s a summary:
| Tender Specs | Lasergraphics Director 10K | Scanity HDR | ARRISCAN XT | GoldenEye |
|---|---|---|---|---|
| Total Requirements Met (evaluated on a 0-100% scale) | 86.56% | 65.25% | 60.25% | 63.16% |
Evaluation of Scanned Picture Quality (each criterion was evaluated on a 0-100 scale):
| Test | Lasergraphics Director 10K | Scanity HDR | ARRISCAN XT | GoldenEye |
|---|---|---|---|---|
| Line Test | 100 | 65 | 59 | 43 |
| MTF Curve | 100 | 92.59 | 72.83 | 51.85 |
| Density Test | 100 | 100 | 0 | 0 |
| Edge Sharpness | 96 | 61.75 | 53.5 | 42.25 |
| Dynamic range | 97 | 67.5 | 55 | 37.5 |
| Expandability > 4K | 100 | 0 | 40 | 100 |
Image Resolution Tests
| Test 1 | Lasergraphics Director 10K | Scanity HDR* | ARRISCAN XT | GoldenEye |
|---|---|---|---|---|
| Image Resolution Comparison 1 |  |  |  |  |
*The DFT Scanity HDR exhibits Moiré patterns (spatial frequency aliasing) for all patterns greater than 80 (i.e., the scan data shows a spatial frequency which is incorrect [lower] than the actual frequency of the test film). For example, the 115 pattern shows only 5 dark lines even though the pattern on the film contains 10 dark lines in each pattern
| Test 2 | Lasergraphics Director 10K | Scanity HDR | ARRISCAN XT | GoldenEye |
|---|---|---|---|---|
| Image Resolution Comparison 2 |  |  |  |  |
| Test 3 | Lasergraphics Director 10K | Scanity HDR | ARRISCAN XT | GoldenEye |
|---|---|---|---|---|
 |  |  |  |  |
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