How to shoot long exposure or capture the motion in daylight

I love long exposure photography, couple of my friends asked me, how to shoot long exposure in daylight. So i am sharing the tips & tricks to capture long exposure in daylight.

Focal Length : 18 mm, Shutter Speed : 20 sec, f stop(Aperture) : f/22, ISO : 100, White Balance : Auto

  Gears you need:

• (D)SLR/Camera with shutter speed controller.(all DSLRs have this functionality) 
• Your three-legged friend tripod.
• ND(neutral density) filters.
• Polarised filters (it is optional) 
• Shutter release cable, if you want more than 30 second exposure.(most of the DSLRs have 30 sec then bulb mode)

Focal Length : 18 mm, Shutter Speed : 30  sec, f stop(Aperture) : f/22, ISO : 100, White Balance : Auto

Mount your camera to tripod. Dial your camera to manual mode, set the value of your aperture and ISO as lowest as possible. Set you shutter speed or TV(for cannon users) to 10 seconds or 20 seconds. If you want more than 30 seconds exposure, then use shutter release cable and set you shutter speed to bulb mode.

Focus the subject and move the lens's focusing switch to Manual mode to lock the focus. Now attach the ND filter  and the Polarising filter(if you feel it is required) to your lens and then click the shutter release button and wait for you result.

Some scientific explanation:

ND filter is a filter that reduces or modifies the intensity of all wavelengths or colors of light equally, giving no changes in hue of color rendition. 

The purpose of a standard photographic neutral-density filter is to reduce the amount of light entering the lens. Doing so allows the photographer to capture the motion in daylight .

Focal Length : 20 mm, Shutter Speed : 10 sec, f stop(Aperture) : f/25, ISO : 100, White Balance : Auto