FAQ

As a general rule, Grad Filters are used to balance the exposure across the image, therefore the clear portion remains correctly exposed, and the colored area affects the brighter portion of the image – the exposure should be set before the filter is fitted, and should remain unchanged when the filter is in place.

There is no difference in the effect on the final image. The difference is in the technical way that the filter manages the light at wavelength level.

Linear polarisers provide standard polarised light with all lightwaves vibrating in the same plane, whereas circular polarisers will polarise and then spin the lightwaves.

The internal optics that control focussing or metering in some modern cameras cannot work with standard polarised light and therefore a circular polariser is required. The information on which type is needed can normally be found in the instruction book for your camera.

The 105mm polariser filter system allows ND grads and a polariser to be used together. The important thing is that the filters can move independently of each other, which is obviously vital for the filters to work correctly.

Please note that although this lens has a 105mm filter thread, the lens design does not allow an SW150 / 105mm adaptor ring to fit effectively.

Unfortunately, we do not currently have a solution for this particular lens

There is no hard and fast answer to this, lens specs and designs change all the time, as do the filter holder requirements.

However, as a rough guide, using:

A simple holder setup with 2 filter slots, and no lens shade a DSLR (small chip) will go down to 10mm.

A 35mm & Full chip DSLR will go down to 16mm.

A medium format 645 & 6×6 will go down to 35mm. A medium format 6×7 will go down to 45mm.

A larger format 5×4 camera will go down to 70 – 90mm.

Bayonet adaptor rings for such cameras as Hasselblad and Rollei fit into the inner bayonet lens fixing.

The standard size for the LEE100 Filter System is 100mm wide, however, we also have the LEE85 (85mm) and the SW150 (150mm) filter systems for more specific uses.

LEE Resin filters are individually hand made, the 2mm Optical Resin is cast in our factory, hand dyed and cut to give a very high quality product both in color accuracy and optical quality. They are hard wearing and ideal for use on location.

Polyester Filters are made on a master roll, the color being coated onto the surface of the clear polyester base material. Because the filters are very thin (0.1mm) the optical quality is high. Polyester is a good, low cost alternative to Resin, but because of the manufacturing process polyester grads are not available.

The Glass Filters that LEE offer tend to be specialist filters that are not available in other materials, such as the ProGlass series or polarizers. They are hard wearing and scratch resistant.

Wide Angle Adaptor Rings have a countersunk thread to allow the filter to be positioned as close to the lens as possible, maximising angle of view. 82mm is the widest we can manufacture that still allows the filter holder to attach and be effectively behind the adaptor ring, any wider and the holder could not attach.

The LEE Field pouch is sized for the 100mm system filters. The pouch takes up to 10 filters and will take the new Landscape polariser in the rearmost filter slot. The pouch is not waterproof, but the material is treated with a water shedding additive during manufacture to make it shower resistant. Additional resistance can be gained by treating the pouch exterior to a waterproofing spray (such as Nikwax) every so often, however in very bad weather, it is advised that the pouch would be better worn under a coat or stored in the camera bag.

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The main design concept behind the pouch was having the ability to hang the pouch from your tripod while shooting - at the time this was a unique idea and it made using the filters while on a shoot very convenient.

Our resin filters are quite delicate, and they need to be stored flat and with even pressure exerted across the surface if stored for any extended period of time (they can bend or warp if not). Glass filters (especially our stoppers) are brittle and can also be easily broken in storage (which is why we supply them in a tin).

The ideal way to store any quantity of both types of filter is together, in a flat block where they protect each other, like layers of laminated glass - once your filters are in the closed Field pouch, they are extremely hard to damage, even if you try (which of course, we have). Introducing a hard, unevenly shaped item like the filter holder or adaptor rings into the pouch would mean the addition of larger compartments and a lot more padding to protect the filters from damage, easily doubling or possibly trebling the size of the pouch - in all likelihood making the pouch too big to fit inside your camera bag (we made sure the field pouch would stand on edge inside the most popular camera bag brands when designing).

The filter holder and adaptor rings are very tough - virtually indestructible in normal use and they don't really need protecting in a pouch like the filters do. The holder and rings can be stuffed into any pocket of a camera bag or rucksack with no chance of them coming to harm, and of course when shooting, the holder and rings are in use, on the lens and do not need to be hung on the tripod for quick selection.

I hope this helps explain our thinking when designing the Field Pouch - you cannot please everyone when inventing products for mass market but we believe the filter-only pouch is the most sensible compromise for a pouch for use when actually shooting images - maximum capacity in a minimum size, with the filters protected and conveniently hung on the tripod for quick access.

The foam light seal only fully seals when the holder is fitted to an adaptor ring. The gaps you can see are normal and will be fully sealed against light leaks once the holder is on the adaptor ring and in use. The filter must be placed in the rearmost filter slot, with the foam making a seal onto the filter holder body.

View the Material Safety Data Sheet for the ClearLEE Filter Wash. 

No, unlike Glass, Resin Filters are made from optical polycarbonate, which cannot be polished to remove scratches. If they are minor scratches, you may be able to keep using the filter normally. For deep scratches, you will need to replace the filter.

You can try to polish minor scratches using a plastic or resin polishing compound, or a fine automotive scratch remover specifically labeled for clear plastics. But results will vary.

Resin filters should be treated as you would a lens, or pair of glasses. Clean with a link free cloth. To remove greasy fingerprints a cleaning solution such as ClearLEE Filter Wash can be used. Salt spray should be dissolved in warm water and the filter dried and cleaned as usual.

LEE Resin filters are made of an optical polycarbonate resin, and should be treated as you would a lens, or a pair of spectacles. Clean with a lint free cloth for general use, and if necessary a lens cleaning solution to remove greasy fingerprints. Salt spray should be dissolved in warm water (not hot) and the filter dried and cleaned as usual.

LEE Filters have developed our own cleaning solution - ClearLEE Filter Wash. 

Individual resin filters are supplied wrapped in paper, in a soft LEE pouch. The paper can be discarded once opened and the filter can be stored and transported like this for normal use.

Resin filter sets are supplied in one of our three filter wraps, again wrapped in tissue when new. These wraps are designed to take minimum space in your camera bag, but do not offer much protection against physical damage.

We recommend that if your filters are to be stored for long periods without use, then this is best done in a cool, dry place, in one of our Field Pouches.

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The ClearLee Microfibre Cloth is used to keep your filters clean and smudge free. It can be cleaned in the washing machine on a gentle cycle.