2. Carry a Tripod
Tripods can be a hassle to pack and carry, but along with a shutter release cable or remote wireless switch, can be invaluable. During most of the day there’s plenty of light, and hand-holding the camera should be fine. In low-light conditions indoors or on city streets, increasing the sensor’s ISO setting will let you continue hand-holding the camera. But if you want to achieve images with minimum noise in low light, maximise depth of field and use slow shutter speeds for creative effects, a tripod is necessary.
The most common travel subjects that call for a tripod are landscapes and cityscapes. Many of the most successful pictures of these subjects are taken early or late in the day, when light levels are low and maximum depth of field is required to render the whole scene sharp.