All articles ← Knowledge Base 03 - DICHROIC GLASS. Where would I use a glass filter? 239 Polariser Achieving White Light / Additive / Subtractive mixing. Additive & Subtractive colour mixing Are LEE Filters self adhesive? B1 Certificate Lighting filters Big Stopper - Blue cast? Blacklight Broken filters / holders. Can I duplicate a palette? Can I narrow the range of colours? Can I use a polariser & coloured filters together? Can I use a polariser and ND grad in the filter holder? Can I use filters on a digital compact? Can I use my existing screw in polariser with the LEE Filter Holder? Can I use the LEE System on 617 cameras ? Can I use the LEE system on a Canon 17mm TSE lens? Can I use the LEE System on my Rangefinder camera? Can I use the system on my Hasselblad CF 40mm? Can my scratched Resin Filters be polished? Can you make filters with two colours (i.e. ND & warm up)? Can you produce a colour temperature filter as a grad? Can you supply grad filters for Black & White photography ? China Dealers Cleaning of the Microfibre Cloth DICHROIC GLASS. Are there as many colours available in glass as with the regular lighting filter? Do LEE make a filter for infra red photography? Do LEE make a system for the Zeiss 15mm? Do LEE make centre ND filters, for wide angle lenses? Do the bayonet adaptor rings fit the inner or outer bayonet? Do you have a lens cap for your system? Faulty Big or Little Stopper / Red lines / Flare. Field Pouch FLUORESCENT SLEEVES / QUICK ROLLS. What colours are available? FLUORESCENT SLEEVES. Are they easy to install? FLUORESCENT SLEEVES. Can I use these sleeves on the higher wattage fluorescent tubes? FLUORESCENT SLEEVES. How long will the colour sleeves last? FLUORESCENT SLEEVES. Is the colour easily replaced? Fuji 60mm XF 2.4R Fuji X - 10-24mm How can I order or buy LEE Filters products? How can I use Grad filters on my rangefinder camera? How do I attach lighting filters to a window How do I attach my filters to some Perspex / window etc? How do I calculate colour temperature shift ( mired shift ) How do I clean my Polyester Filters? How do I clean my Resin Filters? How do I find a dealer? How do I find out more about the filters? How do I fine-tune my selection? How do I mount polyester filters in the plastic frames? How do I rename my palette? How do I reorder the colours in my palette? How do I save my palette? How do I see my colour bigger? How do I select a colour? How do I share my palette? How do I start a new palette? How do I store LEE resin filters? How does the Diffusion Finder work? How does the Gel Comparator work? How long will my Gel filters last? How many colours can I add to the palette? How many filters can I use before the image quality suffers? How much exposure compensation do I give Grad Filters? How thick are the gel filters? How wide will the LEE Filter System go without vignetting? I have an idea to make the app better, or something is not working. I have lost the brass finger bolt / wedge / spring from my holder – help? I know what I'm after - how do I add it to my palette? I love this app! Who made it? I use SLR, Medium and Large Format cameras, does LEE have a system that can be used on all three? I'm seeing lots of palettes I didn't create? I've changed my mind, how do I delete the colour? If I had to buy just one filter, which would you recommend? If I put my filters in front of an high watt lamp will they burn? Inspiring Professional Book 1 & 2 Is there a Dealer in Canada? Landscape Polariser LEE BUG compatability LEE filter iTunes books not available in my country Life Time Colour Filter - How long will the colour last Medium Wide / Universal Hood My lens has a non standard fitting – How can I use the LEE System? Olympus 7-14 mm 2.8 pro Polariser ring 105mm - longer screws needed? QUICK ROLLS. Will they fit any size fluorescent tube? Recycling polyester gels Red Darkroom Safelight Filter Reverse ND Grads Seven5 or RF75? Should I use hard or soft grads? Sigma 12-24 MkI Mk1 or Mk2 MkII Sony Alpha cameras - which system. Spring / Wedge Clip SW150 Screw Thread Adaptors The charts are small, can I make them bigger? Tokina AT-X 11-20mm F2.8 PRO DX Very Hard and Medium Grads. What are the filters made from? What are the three primary colours? What do I need to get started using filters? What does 0.3, 0.6 etc. mean? What does the Y value mean? What filter do I need to convert a xK lamp to a colour temperature of yK? What filter sizes do LEE make? What is a blender filter? What is a stop? What is the 100mm Push On Filter Holder? What is the difference between a Linear & Circular polariser? What is the difference between Resin, Polyester & Glass filters? What is the heat resistance of lighting filters? What’s the difference between hard and soft grads? When should I use a wide angle adaptor ring? Where can I buy your photographic products? Where can I find LEE Gobos? Where can I get a swatch Where is my nearest Camera Filter dealer? Where is my nearest Lighting Filter dealer? Which lens hood should I choose? Why am I not getting what I expected from my search? Why can’t I use a lens hood with my polariser? Why is 82mm the largest Wide Angle Adaptor Ring? Why is it if I am in List view and click back to Colour view there's only a few colours? Wide Rolls Will a Wide Angle Adpaptor Ring work on any lens? Will my filters burn? Your website refers to a Source C - what is Source C?