Shutter speed is shown in fraction form. The fraction is referring to the 1/15 of a second (slow) that it takes the shutter to open and close. Or the 1/6000 of a second (fast) it takes to open and close.
A slow shutter speed allows more light to come in because the shutter is open longer. But since the shutter is opened longer it also allows for some movement in your picture (motion blur) if it’s open longer than 1/80 of a second and there is a moving object/child in front of the camera.
Many photographers over estimate how steady they can hold a camera. Using a standard 50mm lens the minimum shutter speed you should use will be ‘one over 50′, which is 1/50. To turn it into a shutter speed you simply call it a fraction of a second, like this; 1/50th of a second. The nearest shutter speed you can set is actually 1/60th of a second but you get the idea. So if you’re shooting at 200mm the minimum shutter speed you should use will be ‘one over 200′, which is 1/200th of a second. So you would set your shutter speed to 1/250th of a second, that being the closest to 1/200. These figures are just a rough guide and may vary according to individual ability. Over time you will learn how slow a shutter speed you can hand hold but if in doubt always err on the fast side. It wouldn’t generally recommend you hand hold any camera/lens combination below 1/30th of a second.
The image below was shot with a shutter speed of 1/4 second (f20, ISO 100) using a neutral density filter. To get this effect on a very sunny June day was not easy. I had my son Theo stand still while his friends ran around him. The camera was on a tripod because of the slow shutter speed needed and I had screw-in neutral density filter +8 filter otherwise the image would have been completely over exposed as there would have been too much light hitting the sensor. There’s a great article on ND Filter’s here.
For most people the most important aspect of choosing a shutter speed is getting one fast enough to freeze movement. Unfortunately the world is full of things that all move at different speeds and no one bothered to make a list of what shutter speed would be needed to freeze each and every one of them. With this in mind I have put together a little table containing some common ‘things that move’ and a suitable shutter speed to stop them. You can use these values as a basis for working out shutter speeds for other situations you may encounter. This is a rough guide only so don’t sue me if one doesn’t work for you – try increasing another stop.
All signed up. Am I the first? A pre mothers day treat to myself
No there are a few of the regulars so far, they’re just being shy
Me too! I’ve been waiting for this one
Now why am I not surprised Kerry
My comment on Facebook wasn’t a prompt CJ, honestly
….. I really am looking forward to this new project C x
all signed up Looking forward to this, then bootcamp straight after – April will be a good month! x
Woopee I am signed up too, so is a friend
I’m signed up and ready (or not) for a new challenge…………..
Signed up too! I hope I can keep up this time
Looking forward…
I’ve signed up x
I’m signed up, did Not Going Green 2 years ago. Need to make the most of being on maternity leave!
Looks like we’re going to have a lively bunch on this one
Hi decided to do another one after enjoying Not Going Green so much! Cheryl – it says Carol on Paypal again. Looking forward to this one.
CJ can you sign me in to this workshop using my Christmas voucher your reply to me went to my junk mail folder and I have only discovered it
Yes I already did Rosemary – you should have had the welcome email on Sunday – did you not receive it ??
Hi CJ, signed up for this one too, hopefully will get more out of my camera in this one. Looking fwd to it x
No CJ must go back and check junk mail what is my in box playing at
Hi CJ No I have checked and did not get the welcome pack
sent it again Rosemary
Sorry to be such a bother CJ but my first assighment has not arrived in my inbox….. gettining 0800000 messages so I know there is a prob.can I ask you to repost