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The Lee RF75 Digital Advanced Filter Set gives you a leg up on the RF75 Digital Basic Filter Set.
The Lee RF75 Rangefinder Filter Holder System offers a small, portable, flexible filter system to users of all camera formats. From small, high-end digital cameras to traditional medium and large format shooters, the RF75 is designed with a lightweight and compact design making it a perfect choice for outdoor shooting.
This system was originally targeted for small, rangefinder point-and-shoot users. However, it is an eminently viable alternative for anyone needing a compact, full-featured filter system at a reasonable price point. Film shooters as well will find this system of great benefit.
The system holds filters sized 75 x 90mm. The front assembly of the holder has been laser etched for repeatable positioning of the holder. In that way, graduated filters can be used over and over again with the same results. This is a huge benefit to rangefinder users who cannot see the effects of the filters through their viewfinder. The two filters slots on the holder have been designed to cover the widest lenses available in today's market.
ProGlass 0.9 ND (Standard) Filter ProGlass Standard Neutral Density (ND) 0.9 Filter is an interesting filter in that it is designed to absorb many kinds of light - visible, UV and IR (infrared). This filter, because of its unique design makes an excellent choice for the digital market. Digital sensors, being sensitive, will appreciate this. In addition, the results will produce a 'snappy', crisp image you will be proud of.
Neutral Density (ND) 0.6 Glass Filters have several uses and offer the possibility to achieve otherwise unachievable results. They enable the shooter to adjust exposure without affecting color balance. ND filters appear grey and reduce the amount of light reaching the film.
Determining which neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Speaking generally, the 2-stop value (ND 0.6) effectively compensates average situations.
0.6 Neutral Density to 81B Combination Filter Combines the effects of an 81B Color Conversion filter with a 2-stop Neutral Density filter.
It's Autumn. The clouds are low hanging and the sky is "patchy blue". You've gone for a ride upstate to the mountains and the light in open shade is bluish. A photo taken of your girlfriend with daylight balanced film leaning against the side of a barn will yield bluish tones that she might not find particularly flattering.
An 81B filter will replace even more yellow than an 81A and bring her skin tones back to a more appealing level. An 81B can also be used with electronic flash to reduce the amount of "blue" generated by the flash. The 81 series (81A, B, C, D and EF) allows you to choose how much warmth you wish to replace in the image.
81B Color Conversion Filter An 81 series filter controls the bluish coloration that affects daylight film. It can also remove excessive blue from the effects of electronic flash.
Note: RF75 Filter Holder sold separately
Neutral Density Filters Have Four Main Uses
To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure
Neutral Density Factors
ND.3 (exposure adjustment = 1 stop, reduces ISO 1/2)
ND.6 (exposure adjustment = 2 stops, reduces ISO 1/4)
ND.9 (exposure adjustment = 3 stops, reduces ISO 1/8)
81B Color Conversion Filter
Decreases color temperature from 3500 - 3200 Kelvin
In the Box
LEE Filters RF75 Digital Advanced Filter Set (Requires Filter Holder)
ProGlass 0.9 Neutral Density Filter
0.6 Neutral Density to 81B Combination Filter
Table of Contents
Digital Advanced Filter Kit
Fits RF75 Filter Holder (75 x 90mm)
Neutral Density: .6 (2-stop)
Color Conversion: 81B
Neutral Density: Reduces ISO 1/4
81B: +1/3 stop
Neutral Density: Reduce the amount of light reaching the film
81B: The 81 series adds warmth to the image
Neutral Density: To use high speed films in bright sun
81B: Good for general scenics when the photographer wishes to remove the bluish cast from open shade or just add warmth to the photograph, with an 81EF having the greatest effect
Neutral Density: Not Applicable
81B: Decreases color temperature from 3500 - 3200K