| GALLERY | ||
| PORTFOLIO | ||
| NIGHTSCAPE ODYSSEY | ||
| IMAGE NOTES | ||
| ABOUT THE ARTIST |
| Step | Description | Tool |
| 1 | Acquire images at varying exposures
Typical settings: ISO-800, RAW, White balance set to 6500K |
Canon EOS 20Da |
| 2 | Convert RAW to 16-bit linear tiff | Canon EOS Viewer Utility |
| 3 | (Optional, if needed)
Remove motion blur artifacts |
Photoshop, to obtain motion blur samples
MATLAB script blurkernel.m MATLAB script DeblurLucySat.m |
| 4 | Registration | Registar
1.07
or manually with Photoshop if only offsets are needed |
| 5 | HDR merge
output file formats .exr, and .g0_5.tif (16-bit square-root of data) |
MATLAB script mergeToHDR.m |
| 6 | (Optional, but usually important)
Background (black) normalize Operates on .exr HDR file, outputs .exr and .g0_5.tif |
MATLAB script BlackNormalize.m |
| 7 | Tone mapping
.exr is 32-bit floating point, but tone mapping tools are limited. .g0_5.tif is 16-bit "companded". Not as large a dynamic range, but adequate, and tone mapping options are better. |
Photoshop |