Great fun and high energy at the Halifax Pride Parade 2014 captured in this three minute slide show.
Here are some general tips to keep in mind in low light conditions:
1. use a tripod or monopod where possible and turn off vibration reduction/ image stabilization,
2. if you have to hand-hold, turn on vibration reduction, stabilize yourself (against something solid like a wall, table etc, gently squeeze shutter button at the end of your out breath) and apply the "hand-holding rule" = the shutter speed should be approximately the focal length of the lens (e.g. 100mm focal length = 1/100 of a second shutter speed),
3. shoot on manual with the widest aperture for the lens you're using,
4. use manual focus and turn off auto-focus,
5. if need be, increase ISO but keep it to a minimum to reduce noise - most cameras can handle up to ISO 800 and full-frame cameras are good up to 3200 and higher,
6. shoot in RAW because you can better recover detail in the shadows in post-production.
Suggested resources for low light photography:
"Night and Low Light Photography Workshop" by Eric Boutilier Brown at Photoworkshops.ca
Night Photography: Finding Your Way in the Dark by Lance Keimig; Focal Press, 2010 - an excellent book which thoroughly covers the topic with a clear writing style and good photographs to illustrate key points.
"Using Available Light in Dark Settings" - The New York Institute of Photography have a number of helpful short articles on many topics on their website. Here is one at http://www.nyip.edu/photo-articles/archive/using-available-light-in-dark-settings
Night and Low Light Photography, Lynda.com - it's a subscription on-line course but you can watch the introduction for free as a promotion at http://www.lynda.com/Photography-tutorials/Foundations-Photography-Night-Low-Light/90279-2.html - they have lot's of other good tutorials on photography on subscription.