Color Temperature Data for Kino Flo True Match Lamps
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Color Temperature Data for Kino Flo True Match Lamps Unfortunately the color meters available to cinematographers are far from being scientifically accurate. They act as a great comparative tool to determine differences between two given light sources but are inadequate in providing definitive data. You will rarely find two color meters, even if they are the same models, which provide equal data. Results between meters may be similar but not identical. The following Color Temperature data are meant as a general guide for reading Kino Flo lamps on three of the most common photo industry color meters; the Minolta Color Meter II, Minolta Color Meter IIIF, and the Gossen Colormaster 3F. Note: Minolta disclaims its meters Color Compensating (CC) data when reading fluorescent lamps and recommends film tests to determine correct filtration. Color Meter Readings Select Lamp Type setting 8ft Kino KF55 HO 6ft Kino KF55 HO 4ft Kino KF55 4ft 3ft Kino KF55 4ft 3ft Kino KF55 2ft 2ft Kino KF55 2ft 15" Kino KF55 2ft 8ft Kino KF32 6ft Kino KF32 4ft Kino KF32 3ft Kino KF32 3ft Kino KF32 2ft Kino KF32 15" Kino KF32 8ft Kino KF29 6ft Kino KF29 4ft Kino KF29 3ft Kino KF29 3ft Kino KF29 2ft Kino KF29 15" Kino KF29 Color Reading Procedure The safety-coated lamps were read in a single fixture, lying face up on a bench. The lamps were burned for 20 minutes in an ambient temperature of 76F (24C). Operating lamp temperature was measured with a surface probe at the middle of the lamp. The color meter was held about 12 inches (30cm) above the middle of the lamp. No other light source was on in the room. HO HO 4ft 4ft 2ft 2ft 2ft HO HO 4ft 4ft 2ft 2ft 2ft Operating temperature 38C 42C 42C 43C 37C 38C 36C 41C 44C 44C 44C 37C 39C 41C 50C 41C 44C 44C 36C 37C 40C
Minolta II Minolta IIIF 5050 -1cc 5640 2M 5050 -0cc 5600 4M 4900 +0cc 5530 5M 5200 -0cc 5800 2M 5050 -3cc 5560 0cc 4900 -1cc 5440 0cc 4900 -1cc 5470 2M 3090 -1cc 3090 -1cc 3180 +1cc 3320 +1cc 3060 -0cc 3020 +0cc 3050 0cc 2830 -1cc 2960 +0cc 2920 +1cc 2870 +1cc 2700 -0cc 2860 -0cc 2870 +0cc 3420 1G 3420 2G 3540 0cc 3730 4M 3360 1M 3310 1G 3380 2G 3160 1G 3340 0cc 3260 1M 3200 2M 2990 1G 3200 3G 3190 0cc
Gossen 5550 0cc 5580 0cc 5250 5M 5680 0cc 5580 0cc 5260 0cc 5340 0cc 3190 0cc 3190 0cc 3240 0cc 3490 5M 3190 0cc 3110 0cc 3170 0cc 2980 0cc 3070 0cc 2970 0cc 2950 5M 2780 0cc 2970 0cc 2950 0cc
Tips For Reading Color Temperature Make sure no other light source is on or is able to reach the meter. Hold meter about 12 inches (30cm) from the center of the light source. Do not hold the meter directly against a lamp, as the reading will be inaccurate. Do not hold the meter up against the louver. The louver shadows a portion of the meters diffusion disc resulting in inaccurate data. Dont confuse LB filter data with CC data. LB filters are Light Balancing Filters that appear orange or blue. CC filters are Color Compensating Filters which appear magenta and green. Color Meter Variables The filtering data provided by the various meters differs in resolution and value assignment. Minolta II The older Minolta II shows Color Compensating Filter (CC ) data as a range of values in single digit increments. These values translate to Kodak Wratten filters. A conversion chart is provided on the back of the meter. A plus value indicates the spectrum has additional green, a minus value indicates additional magenta. Magenta filters reduce the green content, green filters reduce the magenta content. Minolta II cc+ Magenta conversion chart +2 5M +4 10M +8 20M +13 30M +18 40M Minolta II cc- Green conversion chart -2 5G -4 10G -7 20G -10 30G -13 40G

Minolta III F2 and Gossen Colormaster 3F The Minolta III F2 and the Gossen Colormaster 3F provide direct Kodak Wratten filter values. The resolution of the Minolta is in single digit increments. The Gossen is lower in resolution and provides data increments in filter values of 5. In other words, where the Minolta might render a filter value of 3M the Gossen will render a 5M value.
Color Compensation Filters As a general guide, here are the cinema gels as they correspond to the CC meter readings to correct the light to a zero CC value. Magenta Color Compensation
Filter Description Minolta II 1/8 Minus Green ( Magenta) 1/4 Minus green ( Magenta ) 1/2 Minus Green ( Magenta ) Full Minus Green ( Magenta ) +2cc Minolta IIIF Gossen 4M N/A

Green Color Compensation

Filter Description Minolta II 1/8 Plus Green ( Green ) 1/4 Plus Green ( Green ) 1/2 Plus Green ( Green ) Full Plus Green ( Green ) -2cc Minolta IIIF Gossen 6G N/A
For an example of how Kodak Wratten Filters relate to Color Compensation gels, ROSCO has published a chart comparing their Cinegel series with Wrattens: ROSCO Cinegel Green Color Compensating #3304 Plusgreen #3315 _ Plusgreen #3316 _ Plusgreen #3318 1/8 Plusgreen ROSCO Cinegel Magenta Color Compensating #3308 Minusgreen #3313 _ Minusgreen #3314 _ Minusgreen #3317 1/8 Minusgreen
Kodak Wratten Wratten CC-30G Wratten CC-15G Wratten CC-075G Wratten CC-035G
Kodak Wratten Wratten CC-30M Wratten CC-15M Wratten CC-075M Wratten CC-035M