Kodak was also involved. From the NASA document cited previously:

/quote
4.2.1 Obtain Best Quality Imagery (Film and Video)
The investigation tasks required that the team use the highest quality imagery, thereby
allowing detection and enhancement of details defined by the limits of resolution of the
imagery.

Film Reproduction
During the STS-107 mission, standard procedures for film distribution were followed:
after the launch, engineering launch film prints were provided to other centers by KSC
for analysis. These film duplicates were second-generation positive copies made directly
from the original negative films (Kodak 250 daylight film). However, these engineering
copies were used extensively during the mission for screening and analysis and had been
distorted by heat from projectors and scratched by extensive handling. Additional third
generation copies of key films such as E-208 and E-212 were also used for early
analyses. Important segments of the films were scanned at the JSC Digital Imaging Lab
using a Kodak scanner to produce digital imagery for analysis.
The image analysis team had concerns about the potential loss of detail on the third
generation imagery. The most detailed analysis of the debris strike to the left wing
required the highest quality imagery to be copied directly from the original camera E-208
and E-212 launch films. To accomplish this, the original E-208 and E-212 film negatives
were hand-carried to Kodak facilities in Rochester, New York for scanning in a clean
room environment. Kodak scanned the E-208 and E-212 frames using two different
digital scanning systems (Spirit Data Cine 2K film scanner providing 10 bit, 2048 x 1556
pixel images, and Genesis 4K scanner providing 12 bit, 4096 x 3112 pixel images). A
total of three scans at a range of exposure stops (-1, normal, and +1) were performed.
The Genesis digital scans (files) were printed directly back to film providing positive
engineering prints for the different analysis groups. The digital scans were made
available to the investigators via an ftp computer site. This scanning process eliminated
the slight data loss inherent in making contact prints from the original film with minimum
degradation to the original film.
/end-quote