Tv Mode
My last post was suppose to include this but I
kinda got carried away with the Av mode.. and I hope you went to go play around with the DOF and got the overall idea behind it. Your DOF can be used in a lot of different ways but that you will only get to know about with practice.
Lets begin… Tv mode or Shutter priority is exactly the opposite of Av mode in the sense that with the Tv mode you control the shutter and the aperture is automatically calculated. One thing I forgot to mention about the Av and Tv modes is that the Av button that I explained in one of my last posts can still be used as exposure control.
Its pretty much straight forward if you read my last post, to control the shutter, simply use the scroll wheel thats located close to the shutter button.
Shutter is calculated by the second or part of a second.. 1/60 is 1/60th of a second. When you increase the shutter time to an 1 second it will look like this 1″ on your camera. This controls how long the shutter stays open and how much light the image sensor captures. The longer the shutter to more light you let in.
Remember the rule anything below shutter 1/60 is probably going to invite some camera shake/blur. There are alot of cool things one can do with shutter speeds. Long shutter speeds can be used to capture motion or get in a nice light at night time.
What I love doing is waiting for the sun to hide itself after sunset while there is still a little bit of dark blue sky left, increase that shutter speed and capture the twilight sky. Alternatively you could shoot a lovely silhouette before the sun goes down with using a faster shutter.
Happy snapping … 
