useful links:

Getting started: using filters with Digital Photography

http://www.photo.net/equipment/filters/digital



Guide to thread pitches used throughout the site

ES    European standard male threads 0.75 standard threads today

E      European fine male threads 0.5: for older cameras

F      fine male threads 0.5mm between threads - same as E

C      Coarse male threads 1.0

M      medium male threads 0.75... standard threads today

FR     fine (0.5) female

MR    med (0.75) female

NFT   slim > no front threads

SO    slip-on (over lens barrel)

SS    set screw (tightens over lens barrel)


*step-up, step-down rings: First number is your lens size, second the filter size.

 

Guide to condition of filters for sale

*new filters

       “new” - current or recent packaging.

       “looks new” may be new (?) - out of original packaging

       “n/o” - new filters in older packaging 7+ years.

        NIB...new-in-box...older vintage filters

        NIC...new in original leather or plastic case


( n/o B+W and Heliopan filters are non-slim )


*used filters

       “u/m” “clean” or “very clean” - used, near-mint condition - no flaws.

       vg - used, good glass, some wear on frame

       cs - with original leather or plastic case

       unmtd - unmounted glass

       MC - multi-coated;   SC - single coated

       (*) before the size - quantity discounts available

________________

All Nikon, B+W, Heliopan and other German filters are black anodized brass.

B+W and Heliopan filters are SC “single coated” on both sides...or

B+W “MRC” filters have “multi-resistant coating”

Heliopan “SH-PMC” filters have “super-hard premium multi-coating”

All other round filters are black anodized aluminum unless “chrome”.

_________________

*Linear Polarizers are for manually operated cameras

*Circular Polarizers recommended for AF and Digital cameras

________________

Guide to Neutral Density filters

         ND Wratten #       Filter factor (ff)         Increase exposure stops

              0.1                         1.25                          1/3

              0.2                         1.50                          2/3

              0.3                         2x                               1          

              0.4                         2.5                           1-1/3

              0.5                         3                              1-2/3

              0.6                         4x                               2          

              0.7                         5                              2-1/3

              0.8                         6                              2-2/3

              0.9                         8x                               3          

              1.0                         10                            3-1/3

              1.2                         16                               4

              1.8                         64                               6

              2.0                         100                           6-2/3

              2.4                                                            8

              2.7                                                            9    

              3.0                         1000                           10                

              4.0                         10k                           13-1/3



 

 

 Kodak Wratten numbering system

         http://www.forensictv.net/Downloads/digital_imaging_and_photography/ kodak_wratten_filters_by_michael_j._brooks.pdf
                                                                             



Basics for digital or film



          UV - Haze     Basic reduction of UV light...

                     Filter Factor 0 - 0 stops

 




Skylight 1A, 1B - B+W KR1.5 - Nikon L1A, L1B

  Cuts UV light - pinkish cast for blue haze reduction...

Filter Factor 1 - 0 stops

                                                                            



Linear / Circular Polarizer

  General use in outdoor photography - produces deeper skies and alters reflections.

Filter Factor 3-4...1-2/3 - 2 stops




Infrared 89B - B+W 092 - Hoya R72
  Infrared 87 - B+W 093 - Hoya RM90



 
Enhancing Filter - Hoya Intensifier

  Intensifies the yellow, orange, red spectrum while not    affecting other colors, use with Polarizer to intensify blue skies. Enhances faded fabrics, fall foliage and landscape.

                           Filter Factor 1.4 - 1/2 stop




filters for black and white photography




Yellow 5 - Y1 - Nikon Y44

Light yellow filter for mild contrast...high-altitude UV...Filter Factor 1.4 - 1/2 stop





Yellow 8 - Y2 - B+W 022 - Hoya K2 - Nikon Y48
          This medium yellow filter offers the most correct tonal  range contrast for clouds against blue skies...

Filter Factor 2 - 1 stop




 

Yellow 12 - Nikon Y52
             
Cuts haze in aerial work; used with color infrared; more contrast than yellow 8

Filter Factor 2.2 - 1 stop





Yellow 15 - B+W 023

              Enhances landscapes, marine scenes and aerial photography with more dramatic effects than yellow 8 ...

Filter Factor 2.5 - 1-1/3 stop                      





Orange 16 - B+W 040 - Hoya G

More dramatic effect than Yellow 15...

Filter Factor 2.5 - 1-1/3 stop







Orange 21 - B+W 041 - O2 - Nikon 056

Absorbs blue and blue-greens.

Blue skies darken with dramatic cloud contrasts.

Foliage blackens.

Filter Factor 7 - 2-2/3 stops




Red 23A

Light red producing contrast effects that darken skies, water, rock formations and architecture...

Filter Factor 6 - 2-1/3 stops





Red 25A - B+W 090 - Nikon R60

Dramatic sky effects and cloud contrast.

Useful with Infrared films 
Filter Factor 8 - 3 stops






Red 29 - B+W 091

Dramatic sky effects and cloud contrast. Useful with Infrared films. Deeper effect than 25 Red.

Filter Factor 10 - 4-1/3 stops





Yellow-Green - Hoya XO - B+W 060

Used with outdoor portraiture for good skintones when landscape is important. Enhances highlites in foliage, grass and trees. Same sky contrast as yellows.

Filter Factor 2.5 - 1-1/2 stop





Green 11 - B+W 061 - Hoya X1

Used with outdoor or studio portraiture for rich skintones;

Enhances shadows and highlites in foliage, grass and trees...Filter Factor 4 - 2 stops





Green 58

Dramatically lightens and enhances shadows and highlites in foliage, grass and trees.





Cyan  Blue 38

Minimizes contrast; Bleaches daytime skies.






Blue 47, 47B

Accentuates fog; minimizes contrast giving shots a

wintery effect






                         



                               

                       warming filters for digital or film



Tiffen 812   -  Tiffen FX Warm

Absorbs bluish haze in scenics; Adds warmth to skintones, similar to a dense skylight.

Filter Factor 1.5 - 2/3 stop



81A

Converts Tungsten 3200K Type B film to 3400K w/ indoor lighting

Warms up scenes and portraiture on overcast days w/ Daylight film... Filter Factor...1.4 - 1/2 stop




81B

Used with outdoor portraiture for good skintones when landscape is important. Stronger effect than 81A

Filter Factor 1.4 - 1/2 stop





81C - B+W / Heliopan KR3

Same as 81B but has increased effect

Filter Factor 1.5 - 2/3 stop






81EF

Same as 81C but has increased effect

Filter Factor 2.0 - 1.0 stop






                               color correction / color balance


      Using Cinestill films

                                   https://cinestillfilm.com/pages/frequently-asked-questions


























80A - B+W KB15 - Nikon B15

Balances daylight film for use with most standard  household tungsten lighting or studio lighting...converts 3200K to 5500K....Filter Factor 2.4 - 1-1/3 stops



80B - B+W KB12 - Nikon B12

Balances daylight film for use with most standard  photo flood lamps and on-camera flash.

converts 3400K to 5500K...Filter Factor 2 - 1 stop



80C

Balances daylight film for use with most high intensity  photo flood lamps and on-camera flash....Filter Factor 1.9 - 1 stop




82A - Heliopan B1.5 - B+W KB1.5

Reduces warmth during early morning and late afternoon while maintainig natural skintones.

Filter Factor 1.3 - 1/3 stop





     


82B - Heliopan B3 - B+W KB3

Same as 82A but has increased effect.

Filter Factor 1.4 - 1/2 stop

82C...Filter Factor 1.5 - 2/3 stop



85

Creative strong warming filter. Type-A lighter - Cine-still Tungsten

Filter Factor 2 - 1 stop


          

85A - Heliopan R12

Creative strong warming filter deeper than 85.

Tungsten Type A film - Cine-still Tungsten

Filter Factor 2 - 1 stop




85B - Heliopan R15

Balances Type B indoor film for outside - Cine-still Tungsten

Filter Factor 2.1 - 1 stop




85C

Creative strong warming filter. Balances Type B indoor film for outside like 85B but slightly cooler - Cine-still Tungsten

Filter Factor 2 - 1 stop




FL-D daylight

Balances daylight film to indoor fluorescents reducing green cast... Filter Factor 2 - 1 stop





FL-B

Balances Type B film to indoor fluorescents

Filter Factor 2 - 1 stop





FL-W

Balances daylight film to tungsten corrected or daylight simulated fluorescents.
Filter Factor 2 - 1 stop




CC 30 Magenta

General fluorescent correction with indeterminate ambient fluorescent lighting.




 

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