This second generation 4x5 Light Source Basic MK2 from Negative Supply is designed for users who want to accurately scan 35mm, 120 and 4x5 film. This 99 CRI is optimized for scanning color films, and features an internal acrylic element that drastically increases brightness and boasts perfect light uniformity for up to 4x5 sheet film. The Light Source Basic has a compact form factor that that can dissipate heat during long scanning sessions.
A Solid, Reliable Light Source with High Color Accuracy
This second generation 4x5 Light Source Basic MK2 from Negative Supply is designed for users who want to accurately scan 35mm, 120 and 4x5 film. This 99 CRI is optimized for scanning color films, and features an internal acrylic element that drastically increases brightness and boasts perfect light uniformity for up to 4x5 sheet film. The Light Source Basic has a compact form factor that that can dissipate heat during long scanning sessions.
Even Illumination prevents falloff when scanning 4x5 film
Provides a high degree of color accuracy over long periods of time
Over 2x stops brighter than previous model
TLCI value is averaged from MacBeth 24 Color Checker Chart
Designed for use with 35mm, 120 and 4x5 film
Adapter plates for film carriers can be used directly on the light source
Can be used to mask off light from below film plane
*Shown with optional equipment, available separately
Custom designed and finished internal acrylic panel
Compact light source design dissipates heat during long scanning sessions
Improved carbon composite construction for rigidity
*Shown with optionally available equipment
Ideal for users of any skill level from beginner to advanced user
Compatible with all Negative Supply accessories for 4x5 Light Source Basic
Includes multivoltage AC adapter
*Shown with optionally available equipment
UPC: 850018716888
Negative Supply 45BL99M2 Specs
Key Specs
Viewing Area
5.2 x 4.2" / 13.2 x 10.7 cm
Lamp Type
LED
Color Temperature
Not Specified by Manufacturer
Input Power
100 to 240 VAC, 50 / 60 Hz
Lamp Type
LED
Color Temperature
Not Specified by Manufacturer
Color Accuracy Standard
CRI 99
Tilt Bar
No
Wall Mountable
No
Built-In Dimmer
No
Input Power
100 to 240 VAC, 50 / 60 Hz
Cable Length
55" / 139.7 cm
Construction
Plastic
Overall Dimensions
7.6 x 5.6 x 1" / 19.3 x 14.2 x 2.5 cm
Weight
1.1 lb / 0.5 kg
Packaging Info
Package Weight
1.735 lb
Box Dimensions (LxWxH)
10 x 8.8 x 2"
Negative Supply 45BL99M2 Reviews
Good Product that can be Great with one improvement!
By Israel
Rated 4 out of 5
Date: 2025-06-17
The Negative Supply 4x5 Light Source Basic MK2 (99 CRI) is a good product that needs one improvement to make it Great for scanning 4x5 transparencies - If the manufacture will include a Non-glare Museum quality Glass to hold the slide flat... which I had to buy separately cut to size from a framing shop.
Illumination too uneven for scanning
By Tim
Rated 2 out of 5
Date: 2025-02-10
Nice compact size. Pretty bright. Color accuracy was quite good. However, brightness varies more than expected (about 3 EV) across the 4x5 scan area. Images attached show the raw capture (top image) of the Mk2 vs a Logan Portaview lightbox for a 4x5 film area. This Portaview has had the lights replaced with CRI 99 tapelight. Bottom images have the range compressed to show the light distribution from each source. We purchased with the expectation that since it is designed for scanning that it would at least have more even illumination than a standard light box.