Hi
Simply use RSE it's free and work very well
These are the formats that RSE supports for building thumbs:
- Canon CR2 files (all models)
- THM files from Minolta and Canon
- Canon CRW (not all; try to see if it supports yours; the G-series is known to give no thumbs)
- Adobe DNG files; The thumb of DNG files also reflect the embedded preview
- Nikon NEF files (all models)
- Pentax PEF files
- Olympus ORF files (some models may give no thumb; try and find out if your model is supported)
- Sony SRF files
- Sony SR2 files
- Sony ARW files
- Fuji RAF files
- Adobe PSD files
- Corel/Jasc PSPINFO files
These are the formats that RSE supports for Exif info tooltips:
- Canon CR2 files
- THM files from Canon
- Canon CRW
- Minolta MRW files
- Adobe DNG files
- Nikon NEF files
- Pentax PEF files
- Olympus ORF files
- Sony SRF files
- Sony SR2 files
- Sony ARW files
- Fuji RAF files
- Adobe PSD files
- Corel/Jasc PSPINFO files
- Epson ERF files
- Kodak KDC files
- Kodak DCR files
- TIF files
- JPG/JPEG/JPE files
- Panasonic/Epson/Leica RAW files
- Sigma X3F files
download here