Bringing the right camera and film will determine the quality of your photographs of the trip. A good SLR camera with a telephoto lens is ideal. Lenses longer than 300mm require a tripod for good results and may be too cumbersome to lug around. Bring a mixture of fast and slower film. Long lenses require faster film, so consider 200 ISO (ASA) for a larger lens in low-light conditions, and use slower 64 ISO (ASA) film for superior color slides. One disadvantage of low ISO (ASA) film is that you may need a tripod or beanbag to steady the camera during early morning and evening shots. Many people like to bring small point-and-snap cameras for their lighter weight and size.
Digital cameras are becoming increasingly popular. In addition to providing instant gratification, digital photos are incredibly easy to distribute and use. You can send them along to friends via email, post on a website, or insert in word processing documents. If you bring a digital camera, be sure to carry a good supply of batteries. Be familiar with how many images you can store on your memory card at the resolution you prefer, and plan accordingly.
Video camera enthusiasts should note that there are no video-charging facilities on trek.
A Word about Photographing People: The people of Bhutan are very colorful, and their facial features bestow on them such a peaceful beauty that it is hard to pass up a photographic opportunity. Generally speaking Bhutanese children love having their picture taken. Most times, as soon as they see your camera, they will run up to you, giggling and fighting among each other for the best position in the tableau. Other times, they may not show such enthusiasm but, if asked politely, they will be more than happy to pose for you. Adults are more reserved and, out of respect, you should always ask permission of your subjects before pointing your camera at them.
Bhutan is generally liberal about photography by tourists. There are a few places, though, with signs prohibiting photography, such as the telecommunication or Military Area.
There are no restrictions on photographing the outside of dzongs (fort-monasteries) and goembas (monasteries), but photography is strictly prohibited inside goembas and lhakhangs (temples). Kindly note Drones are also not allowed.
For more information you can check the website of the Bhutan InfoComm & Media Authority (www.bicma.gov.bt/bicmanew).