Since some years OSRAM is not producing furthermore the tube 8 Watt 12-950. They produce further 950 in length 59cm; but not the right with 24cm.
Replacement is now with 12-954 with colour rendtion 92%.
The old 950 has rendition 98% near maximum 100. (Hence 950 is always the best for printers and enterprises with high fidelity of reproduction (eg dentist for second teeth).
QUESTION
1) anyone has seen quality differences after replacement of tubes ?
This could arrive because the rodenstock lense (adapting to the diminuished light) must now applicate wider aperture (adapting at 92) ; hence with wider aperture the DOF is lesser.
Hence the scanning on the border (of the line scanner by 4x5) could be very altered because the distance from the rodenstocklens/point is always greater on the two ends of line than in the centre.
Hence the ends could be visible out of DOF now by the wider aperture.
This would say:
The whole scanned image is on the two borders not so sharp than in the centre (but parallel lines).
In consequence the simple tube could lose all quality efforts of the famous scanners.
2) I assume that after a nomenclature (international reference values) change the °Kelvin of 950 and 954 are the same 5400°
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