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A focused light source for larger-format film scanning
The 4x5 Light Source Basic MK2 gives 35mm, 120, and 4x5 workflows a bright, color-accurate illuminated area in a compact system that remains compatible with Negative Supply's 4x5 accessories.
- Supported Formats 35mm, 120 & 4x5
- Color Accuracy 97 CRI / 98 TLCI
- Illuminated Area Up to 4x5 sheet film

Product Highlights
- Designed for 35mm, 120, and 4x5 film scanning
- Illuminates film formats up to 4x5 sheet film
- 97.0 CRI and 98.0 TLCI according to Negative Supply testing
- Over two stops brighter than the previous model
- Carbon composite construction for rigidity
- Custom internal acrylic designed to improve brightness and light uniformity
- Backwards compatible with Negative Supply 4x5 Light Source Basic accessories
Product Information
The Negative Supply 4x5 Light Source Basic MK2 - 97 CRI is a film-scanning light source for 35mm, 120, and 4x5 sheet film. Its illuminated area covers formats up to 4x5, while a custom internal acrylic is designed to improve brightness, color rendering, and light uniformity.
Built for consistent scanning sessions
Negative Supply describes the MK2 as over two stops brighter than the previous model, with carbon composite construction and a design intended to dissipate heat during extended scanning sessions. The manufacturer reports 97.0 CRI and 98.0 TLCI from its testing.
Fits into a 4x5 scanning workflow
The Light Source Basic MK2 accepts Negative Supply adapter plates for film carriers and is backwards compatible with accessories for the original 4x5 Light Source Basic. Pair it with the optional Pro Mount MK2 when you need to mask light below the source, add leveling capability, or use an anti-static dust brush.
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4x5 Light Source Basic MK2 - 97 CRI
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International AC power supply with domestic and international power adapters
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Instructions
| Film Scanning | |
|---|---|
| Supported Formats | 35mm, 120, and 4x5 film |
| Illuminated Area | Large enough for formats up to 4x5 sheet film |
| Film Carrier Support | Accepts Negative Supply adapter plates for film carriers |
| Light Quality | |
|---|---|
| CRI | 97.0 |
| TLCI | 98.0 |
| Brightness | Over two stops brighter than the previous model |
| Light Uniformity | Custom internal acrylic designed to improve brightness, CRI, and uniformity |
| Construction & Compatibility | |
|---|---|
| Construction | Carbon composite |
| Accessory Compatibility | Backwards compatible with Negative Supply accessories for the 4x5 Light Source Basic |
| Optional Mount | Pro Mount MK2 can mask light below the source and adds leveling and anti-static dust brush capabilities |
| Identification | |
|---|---|
| Manufacturer | Negative Supply |
| MPN | 45BL97M2 |
| UPC | 850018716895 |














