B&H model C - Revision history

EstherUrlus at 18:27, 3 December 2025

2025-12-03T18:27:51Z

← Older revision		Revision as of 18:27, 3 December 2025
Line 8:		Line 8:
	* sound pos = only the optical sound part when printed as positive from a negative		* sound pos = only the optical sound part when printed as positive from a negative
	* sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.		* sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.


			Standard filtering for printing Colour + B&W on the B&H model C

			B&H 12 steps = 1 stop (equivalents 0.30 ND in Kodak wratten filters)

			– valve range 1 – 50 steps

			– knobs 1 – 24 steps


			correction filters

			Kodak 2B to block UV neccesary for Eastman CP

			filter place in printer = in front of light end or in front of Blue

			Kodak 2E for Eastman Ektachrome or other E6 processes


			B&W to CP / ANIM standard filters =

			2B

			0.20 ND

			1.20 Y

			0.50 M

			0.05 C


			Tinting effect = FLASHING

			Toning effect = DIM printing with B&W NEG to COLOR PRINT


			DFL (DESMET FLASH) / ANIM standard filters =

			2B

			1.40 ND

			0.60 M

			1.00 Y

			0.05 C


			K = 4 Red – 16 Green – 19 Blue


			DIM (DESMET IMAGE) / ANIM standard filters =

			2B

			0.20 ND

			1.20 Y

			0.50 M

			0.05 C


			K = 6 Red – 12 Green – 18 Blue


			COlOR NEG LAD (LAD = Labaratory Aim Density)

			K = 14 – 9 – 19

			+ 0.30 ND in front of Red

			filters = 2B + 0.90 ND


			Internegative Color (on Kodak 50D 7203)

			Pos to neg – LAD should be after developing (densitometer measuring)

			R – 0.90

			G – 1.30

			B – 1.70


			FLASH aim LAD (you then have to subtract the orange base)

			R – 0.15

			G – 0.15

			B – 0.15

			COLOR CORRECTING (NEG – POS)


			(general GAMMA of NEG = 0.65


			CYAAN MAGENTA YELLOW

			\| \| \|

			–-------------------- neutral image

			\| \| \|

			RED GREEN BLUE



			Cy + Ma – Blue

			Cy + Y – Green

			Ma + Y – Red

EstherUrlus at 14:24, 1 December 2025

2025-12-01T14:24:24Z

← Older revision		Revision as of 14:24, 1 December 2025
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	[[File:B&H model C.jpg\|thumb\|Bell&Howell model C at Filmwerkplaats ~~with additive RGB lamphouse~~]]		[[File:B&H model C.jpg\|thumb\|Bell&Howell model C at Filmwerkplaats]]
	This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB ~~(red-green-blue light)~~ in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop.		This Bell&Howell model C is an additive colour printer with a RGB (red-green-blue light) lamp house. This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop

	The gate has the options		The gate has the options

	composite = full image including optical sound outline		* composite = full image including optical sound outline
			* picture = only the image, no outline framing
	picture = only the image, no outline framing		* sound pos = only the optical sound part when printed as positive from a negative
			* sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.
	sound pos = only the optical sound part when printed as positive from a negative

	sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.

EstherUrlus at 14:18, 1 December 2025

2025-12-01T14:18:18Z

← Older revision		Revision as of 14:18, 1 December 2025
Line 1:		Line 1:
			[[File:B&H model C.jpg\|thumb\|Bell&Howell model C at Filmwerkplaats with additive RGB lamphouse]]
	This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB (red-green-blue light) in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop.		This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB (red-green-blue light) in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop.

EstherUrlus: Created page with "This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB (red-green-blue light) in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop. The gate has the options composite = full image including optical sound outline picture = only the image, no outline framing sound pos = only the optical sound part when printed as positive from a..."

2025-12-01T13:53:49Z

Created page with "This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB (red-green-blue light) in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop. The gate has the options composite = full image including optical sound outline picture = only the image, no outline framing sound pos = only the optical sound part when printed as positive from a..."

New page

This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB (red-green-blue light) in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop.

The gate has the options

composite = full image including optical sound outline

picture = only the image, no outline framing

sound pos = only the optical sound part when printed as positive from a negative

sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.