Kodak PROFESSIONAL BW400CN Film, 24
Contents
1. Characteristic Curve 4 0 Exposure Daylight Densitometry Status M Log H Ref 1 44 3 0 gt 2 20 W a 1 0 0 0 4 0 3 0 2 0 1 0 0 0 1 0 F009_0274AC LOG EXPOSURE lux seconds Spectral Sensitivity Curve Effective Exposure 1 100 Sec Process C 41 Densitometry Status M Density 0 2 above D min LOG SENSITIVITY 0 0 250 300 350 400 450 500 550 600 650 700 750 WAVELENGTH nm Sensitivity reciprocal of exposure erg cm required F009_0275AC to produce specified density NOTICE The sensitometric curves and data in this publication represent product tested under the conditions of exposure and processing specified They are representative of production coatings and therefore do not apply directly to a particular box or roll of photographic material They do not represent standards or specifications that must be met by Eastman Kodak Company The company reserves the right to change and improve product characteristics at any time KODAK PROFESSIONAL BW400CN Film F 4036 KODAK PROFESSIONAL BW400CN Film Spectral Dye Density Curves Typical densities for a midscale neutral subject and D min Midscale Density DIFFUSE SPECTRAL DENSITY 0 0 400 450 500 550 600 650 700 F009_0576AC WAVELENGTH nm Modulation Transfer Function eT tPA oe ce oe 200 an S oOo oo MY wo oo l HE gt C Exposure paio ot TT er jdt 1 2345 10 20 600 SPATIAL FREQUENCY an2. RESPONSE FO09_0577AC Kea EASTMAN KODAK COMPANY KODAK PROFESSIONAL BW400CN Film KODAK Publication No F 4036 MORE INFORMATION Kodak has many publications to assist you with information on Kodak products equipment and materials The following publications are available from Kodak Customer Service from dealers who sell Kodak products or you can contact Kodak in your country for more information E 30 Storage and Care of KODAK Photographic Materials Before and After Processing E 58 Print Grain Index E 71 Retouching Color Negatives E 4021 KODAK PROFESSIONAL PORTRA and SUPRA ENDURA Papers E 4020 KODAK PROFESSIONAL ULTRA ENDURA Paper E 4031 KODAK PROFESSIONAL ENDURA Transparency and Clear Display Materials E 4028 KODAK PROFESSIONAL ENDURA Metallic Paper E 4034 KODAK PROFESSIONAL ENDURA Day Night Display Material G 4006 KODAK PROFESSIONAL PORTRA Black amp White Paper E 4019 KODAK PROFESSIONAL PORTRA Sepia Black amp White Paper J 38 Using KODAK FLEXICOLOR Chemicals in Sink Line Bath and Rotary Tube Processors Z 131 Using KODAK FLEXICOLOR Chemicals For the latest version of technical support publications for KODAK PROFESSIONAL Products visit Kodak on line at http www kodak com go professional If you have questions about KODAK PROFESSIONAL Products call Kodak In the U S A 1 800 242 2424 Ext 19 Monday Friday 9 a m 7 p m Eastern time In Canada 1 800 465 6325 Mo
3. Auditorium 1 30 2 Leave shutter open for several bursts tUse a tripod or other firm camera support for exposure times longer than 1 30 second Use shutter speeds of 1 60 second or longer with fluorescent light Electronic Flash Use the guide numbers in the table below as starting point recommendations for your equipment Select the unit output closest to the number given by your flash manufacturer Then find the guide number for feet or metres To determine the lens opening divide the guide number by the flash to subject distance If negatives are consistently too dense overexposed use a higher guide number if they are too thin underexposed use a lower number Unit O tput Guide Number BCPS For Distances in For Distances in Feet Metres 350 85 26 500 100 30 700 120 36 1000 140 42 1400 170 50 2000 200 60 2800 240 70 4000 280 85 5600 340 105 8000 400 120 BCPS beam candlepower seconds Exposure Adjustments for Long and Short Exposures No exposure compensation for reciprocity failure is necessary for exposures between 1 10 000 and 120 seconds We do not recommend exposures longer than 120 seconds For critical applications make tests under your conditions Filter Factors Multiply the normal unfiltered exposure time by the filter factor Daylight Tungsten KODAK WRATTEN Multiply Multiply Gelatin Filter Exposure B
4. Display Material KODAK PROFESSIONAL ENDURA Day Night Display Material KODAK PROFESSIONAL ENDURA Metallic Paper KODAK PROFESSIONAL BW400CN Film e F 4036 IMAGE STRUCTURE Sharpness Extremely high Degree of Enlargement Extremely high Print Grain Index Magnification Table Print Grain Index numbers for diffuse printing illumination e This is a method which replaces rms granularity It is on a different scale which cannot be compared to rms granularity e The scale is a uniform perceptual scale with a change of 4 units representing a Just Noticeable Difference for 90 of observers e Index value representing the approximate visual threshold for graininess 25 e Standardized inspection distance for all print sizes 35 6 cm 14 inches e In practice prints larger than 10 2 x 15 2 cm 4x6 inches will likely be viewed from distances greater than 35 6 cm 14 inches thereby reducing overall graininess that is perceived e These Grain Index numbers may not represent graininess observed from more specular printing illuminants such as condenser enlargers Negative Size 24 x 36 mm Size 135 Print Size in inches 4x6 8x10 16x20 Magnification 4 4X 8 8X 17 8X Print Grain Index less than 25 40 70 Negative Size 6 x 6 cm Size 120 220 Print Size in inches 4x6 8x10 16x20 Magnification 2 6X 4 4X 8 8X Print Grain Index less than 25 less than 25 40 CURVES
5. a filter such as the red filter for Status M Densitometry or a KODAK WRATTEN Gelatin Filter No 92 Depending on the subject and the light source used for exposure a normally exposed color negative measured through the red filter should have the approximate densities listed below These densities apply for the recommended light sources and correct processing of the negative Densities of Properly Exposed and Processed Negatives Area on the Negative Densities The KODAK Gray Card gray side receiving the same illumination as the subject 0 30 t0 1100 The lightest step darkest in the negative of a KODAK Paper Gray Scale receiving the 1 15 to 1 35 same illumination as the subject Normally lighted forehead of person with light complexiont let ee Normally lighted forehead of person with dark complexiont 0 30 t0 1 20 KODAK Publication No R 27 t Because of the extreme range in skin color use these values only as a guide For best results use a KODAK Gray Card gray side RETOUCHING Treat the negative as if it were a color negative You can retouch 120 220 size BW400CN Film on both the emulsion and base sides 35 mm film can be retouched on the emulsion side only Both retouching dye and black graphite lead pencil can be used to retouch this film When retouching with pencil on the emulsion side use KODAK Retouching Fluid to improve the tooth of the film If you plan to use retouched BW400CN F
6. PROFESSIONAL TRI X 400 or T MAX 100 Film BW400CN Film is designed to deliver excellent black and white prints on professional color papers When printing on color papers you can also create special effect tones such as sepia simply by changing the printer color balance You can make black and white prints from BW400CN Film negatives by enlarging them on KODAK PROFESSIONAL PORTRA ENDURA SUPRA ENDURA and ULTRA ENDURA Papers KODAK PROFESSIONAL DURAFLEX Plus Digital Display Material KODAK PROFESSIONAL ENDURA Metallic Paper and KODAK PROFESSIONAL PORTRA Black amp White Paper for Process RA 4 For a sepia tone print try KODAK PROFESSIONAL PORTRA Sepia Black amp White Paper Make color slides and transparencies by printing the negatives on KODAK PROFESSIONAL ENDURA Transparency Display Material or KODAK PROFESSIONAL ENDURA Clear Display Material Starting Printing Filter Pack When working with a color enlarger to print on professional color papers and display materials add 5M to your KODAK PROFESSIONAL PORTRA 160NC Film filter balance and make adjustments to balance the print to a desired tone Digital Files You can scan your image to a file and print digitally to KODAK PROFESSIONAL PORTRA ENDURA Paper KODAK PROFESSIONAL SUPRA ENDURA Paper KODAK PROFESSIONAL ULTRA ENDURA Paper KODAK PROFESSIONAL ENDURA Transparency Display Material KODAK PROFESSIONAL ENDURA Clear Display Material KODAK PROFESSIONAL DURAFLEX Plus Digital
7. TECHNICAL DATA BLACK AND WHITE FILM KODAK PROFESSIONAL BW400CN Film KODAK PROFESSIONAL BW4O00CN Film is a multi purpose 400 speed black and white chromogenic film designed for processing in color negative chemistry and printing on color negative paper BW400CN Film features the finest grain available today in a professional chromogenic film The result is a smooth neutral tone image with outstanding highlight and shadow detail This film is designed for portrait wedding commercial and advanced amateur photographers looking for the power of black and white imagery coupled with the convenience of using Process C 41 for film and Process RA 4 for color prints This film is intended for exposure with daylight electronic flash and artificial illumination You can also obtain pleasing results under other light sources i e illumination in stadiums without using filters Use KODAK FLEXICOLOR Chemicals for Process C 41 and process this film simultaneously with color negative films This film can be printed on KODAK PROFESSIONAL PORTRA ENDURA SUPRA ENDURA and ULTRA ENDURA Papers as well as other color negative papers Features Benefits e KODAK T GRAIN e Extremely fine grain and high Emulsions sharpness Excellent quality and detail in enlargements Neutral predictable results with a variety of printing devices High quality film scans for ease of use in digital applications Rapid turnaround in any lab that processes co
8. d Care of Photographic Materials Before and After Processing DARKROOM RECOMMENDATIONS Do not use a safelight Handle unprocessed film in total darkness EXPOSURE Daylight Exposure Use the exposures in the table below for average frontlighted subjects from 2 hours after sunrise to 2 hours before sunset Lighting Conditions Shutter Lens Opening Speed seconds Bright Hazy Sun on Light Sand or Snow 1 500 22 Bright or Hazy Sun Distinct Shadows 1 500 ne Weak Hazy Sun Soft Shadows 1 500 1 Cloudy Bright No Shadows 1 500 8 Heavy Overcast Open Shadet 1 500 5 6 Use f 8 for backlighted close up subjects t Subject shaded from the sun but lighted by a large area of sky Existing Light Subject and Lighting Shutter Speed Lens Opening Conditions second Home Interiors at Night Average Light 1 30 2 Bright Light 1 30 12 8 Fireworks Bulb or Aerial Displays Time t 16 Displays on Ground 1 60 4 Interiors with Bright Fluorescent Light 1 604 4 Brightly Lit Street Scenes at Night 1 60 12 8 Neon and Other Lighted Signs 1 125 4 Floodlighted Buildings Fountains Monuments 1 15 2 Night Football Soccer Baseball Racetracks 1 125 12 8 Basketball Hockey Bowling 1 125 2 Stage Shows Average Light 1 60 12 8 Bright Light 1 125 Circuses and Ice Shows Floodlighted Acts 1 125 12 8 Spotlighted Acts 1 250 School State and
9. ilm for printing on color negative paper follow the Dye Filter Layering Technique For more information about retouching techniques supplies and equipment see KODAK Publication E 71 Retouching Color Negatives Dye Filter Layering Technique To retouch small areas use diluted KODAK Liquid Retouching Colors For most retouching you will need only two dyes red yellow and cyan Prepare the diluted dyes according to the following formulas Water Diluted Formula Dilution 1 Dilution 2 Dilution 3 Dyes Red yellow 5 drops 18 drops 30drops 60 drops red dye distilled distilled distilled plus 1 water water water 1 10 drop 1 3 1 5 yellow dye plus distilled water Cyan 3 drops 15 drops 30drops 60 drops cyan dye distilled distilled distilled plus water water water 1 20 distilled 1 5 1 10 water 1 Hold a WRATTEN Gelatin Filter No 58 green near your eye and view the negative through the filter Evaluate the areas to be retouched if they appear lighter than the surrounding areas apply red yellow dye by using the technique described in step 2 2 Dip the brush into the dye and stroke the tip on water dampened cotton tissue or paper towel until the tip is almost dry Smoothly apply a small amount of dye to the base side of the negative Note When you retouch along sharp edges in an image or make very fine corrections apply dye to the emulsion side This allo
10. lor negative film Neutral toned black and white prints from color processes For processing in KODAK FLEXICOLOR Chemicals Process C 41 Optimized for printing Smooth neutral images with on color negative outstanding highlight and papers shadow detail Eastman Kodak Company 2004 January 2004 e F 4036 amp SIZES AVAILABLE Catalog numbers and packaging may vary from country to country See your dealer who supplies KODAK PROFESSIONAL Products CAT No CAT No Size Base US amp except Canada US amp C 135 24 N A 860 7640 7 0 13 mm 0 005 in 135 36 Acetate 897 6995 130 4740 135 36 5 pk 183 3136 839 8075 120 single N A 126 5412 0 10 mm 0 0039 in 120 5 pk acetate 899 0558 873 9286 220 5 pk 146 9717 N A STORAGE AND HANDLING Before Exposure Load and unload your camera in subdued light High temperatures or high humidity may produce unwanted quality changes Store unexposed film at 21 C 70 F or lower in the original package Always store film exposed or unexposed in a cool dry place Though this film has excellent latent image keeping characteristics after exposure but before processing for best results process film as soon as possible after exposure Protect processed film from strong light and store it in a cool dry place For more information on storing negatives see KODAK Publication No E 30 Storage an
11. nday Friday 8 a m 5 p m Eastern time Note The Kodak materials described in this publication for use with KODAK PROFESSIONAL BW400CN Film are available from dealers who supply KODAK PROFESSIONAL Products You can use other materials but you may not obtain similar results Kodak Imaging Solutions Kodak Kodak Professional Duraflex Endura Flexicolor Panalure Portra Supra New 1 04 T Grain T Max Tri X Ultra and Wratten are trademarks Printed in U S A
12. ws for more precise alignment of the retouching with the image and avoids parallax problems from inaccurate application 3 Hold a WRATTEN Gelatin Filter No 25 red near your eye and view the negative through the filter Evaluate the areas to be retouched if they appear lighter than the surrounding area apply cyan dye by using the technique described in step 2 KODAK PROFESSIONAL BW400CN Film F 4036 4 View the negative without using a filter If a retouched area appears slightly red or slightly cyan add a very small amount of the opposite colored dye until the area appears neutral After you have finished retouching and the negative is dry sandwich the PORTRA 400BW negative with a piece of unexposed and processed D min of another color negative film such as KODAK PROFESSIONAL PORTRA 160VC Film Although you can print it onto color paper without the extra D min this may make it easier to print on color paper For more information about retouching techniques supplies and equipment see KODAK Publication E 71 Retouching Color Negatives PRINTING NEGATIVES Note BW400CN Film is optimized for printing on color negative papers BW400CN Film can be printed on traditional black and white papers but the printing time will be substantially longer and require a higher contrast grade of paper 3 5 to 4 For best results when printing onto black and white paper we recommend a traditional black and white film such as KODAK
13. y Exposure By Filter Factor Filter Factor No 8 yellow 1 4 1 25 No 11 yellowish Green 3 3 No 15 deep yellow 2 1 4 No 25 red 8 3 No 47 blue 12 5 16 No 58 green 5 6 4 Polarizing Filter 2 5 2 5 Average filter factor which may vary slightly depending on the manufacturer Polarizing filters are not manufactured by Kodak KODAK PROFESSIONAL BW400CN Film e F 4036 PROCESSING Process BW400CN Film in KODAK FLEXICOLOR Chemicals for Process C 41 You can have this film processed by any photofinisher who processes color negative films like KODAK PROFESSIONAL PORTRA Film BW4O00CN Film is fully compatible with Process C 41 and can be intermixed with color negative films during processing in all equipment from minilabs to high volume continuous roller transport or rack and tank processors You can also use KODAK FLEXICOLOR Chemicals in the 1 gallon size to process this film in a small tank or a rotary tube processor For specifications on Process C 41 see Kodak Publication No Z 131 Using KODAK FLEXICOLOR Chemicals amp Important Do not process this film in conventional black and white chemicals Negative Appearance The appearance of processed negatives on BW400CN Film is similar to color negative films but with no color in the negative images JUDGING NEGATIVE EXPOSURES You can check the exposure level of the processed negatives with a suitable electronic densitometer equipped with
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