Updated 20 October 2026

lens filters gorilla photography is a subject central to Uganda’s wildlife tourism, where mountain gorilla conservation and responsible visitor experiences go hand in hand. For the hour with the gorillas, the best filter is usually no filter at all. Bwindi’s forest floor is dark, and you will often be shooting at ISO 1600–6400 just to keep the shutter speed fast enough for moving animals, so a polariser that costs 1.5–2 stops of light does more harm than good. A thin, high-quality protective filter is worth carrying for rain and branches. Polarisers and ND filters come into their own outside the forest, for lakes, waterfalls and savanna landscapes on the rest of the trip.

This guide explains what each type of filter does in gorilla country, when to use it and when to leave it in the bag.

Lens filters for gorilla photography: what actually helps in the forest

Why light is the problem in the forest

Gorillas spend much of their time in thick vegetation under a closed canopy, often on overcast or misty days. Their black fur absorbs light, and the scene often mixes deep shade with bright patches of sky or sunlit leaves. Flash is not allowed, so every photograph depends on natural light. To freeze a feeding or moving gorilla you need at least 1/250 s, often more, and to get there at f/2.8–f/5.6 you will regularly push your ISO high.

Anything that cuts light forces you to choose between a slower shutter, which brings blur, and a higher ISO, which brings noise. That is the trade-off that rules out most filters during the encounter. Our guides to photographing gorillas in low light and camera settings for gorilla trekking cover exposure in more detail.

Circular polariser: useful, but rarely during the encounter

A circular polariser (CPL) cuts reflections from non-metallic surfaces. On wet leaves it removes the silvery glare and deepens the greens, and over water or sky it adds contrast and colour. Those effects are real, but a polariser typically costs 1.5–2 stops of light. In the forest, that can turn 1/250 s at ISO 3200 into 1/80 s, or force ISO 10,000 to keep the same speed. For most people, a sharp, slightly glary photo is better than a blurred one.

There are exceptions. If a family is feeding in an open clearing or on a forest edge in bright sun, and wet foliage is shining around them, a polariser can help, provided your shutter speed stays high enough. It also has to be rotated for each angle, which costs time you may not have in a one-hour visit. If you carry one, keep it in a pocket and fit it only when the light clearly allows.

Outside the forest, a polariser is excellent for the views over Lake Bunyonyi, the Kazinga Channel and the crater lakes near Kibale, and for cutting haze and glare on savanna game drives.

Protective (UV or clear) filters

Modern digital sensors are barely affected by UV light, so a “UV filter” today is really a clear protective glass. On a gorilla trek, where you push through wet vegetation, slip on muddy slopes and get rained on, it can save the front element of an expensive lens from scratches and makes cleaning less nerve-racking. A good-quality, multi-coated filter has little visible effect on sharpness.

Cheap filters are a different matter. They can add flare and ghosting when you shoot towards bright gaps in the canopy, and reduce contrast. If you use one, buy a reputable brand, keep it clean, and take it off if you see flare. A lens hood gives similar physical protection, also blocks stray light, and should stay on throughout the trek.

ND and graduated filters

Neutral density (ND) filters block light deliberately, to allow long exposures in bright conditions. Inside the forest they are useless with gorillas. They are worth packing only if you plan landscape photography elsewhere, such as long-exposure shots of Murchison Falls, the Sipi Falls or forest streams, using a tripod. Graduated ND filters, used to balance a bright sky with a darker foreground, also suit landscapes rather than the irregular light of a forest.

Colour filters

Warming and colour-correction filters are no longer needed. Shoot in raw and adjust the white balance later to remove the green cast that forest light gives to skin and fur. This also lets you match the colour of photos taken in different light during the same hour.

Humidity and cleaning

Bwindi is often wet and misty, and filters and lenses fog when you move between a cool morning and warmer air, or take gear out of a sealed bag. Carry two or three microfibre cloths in a dry pocket, a blower, and a rain cover or plastic bag for the camera. Each extra filter is another surface to fog and another thing to clean in a hurry, which is a good reason to carry fewer of them. Our guide to the best lens for gorilla photography matters far more than any filter choice.

A simple filter kit for a gorilla safari

Most photographers need only a good protective filter or a lens hood on the main lens for the trek, a circular polariser for lakes and landscapes, and, if you love long exposures, one ND filter for waterfalls. Remember that you get one hour with the gorillas on a permit costing US$800 (US$600 in April, May and November). Every minute spent changing filters is a minute not spent watching or photographing, and the rangers’ rules on distance and no flash apply whatever gear you carry.

Frequently asked questions