Shutter Speed, Aperture...Confusion

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Jamess220191

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James
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Hey guys i was just wondering how do you choose you shutter speeds based on aperture? I am finiding it really hard to understand how to choose a shutter speed that will work with a set F number. Any hints, tips etc on choosing shutter speed?
 
Depends entirely upon what light is available and what you are shooting.

Can thoroughly recommend a read of 'Understanding Exposure' if you haven't already.

Sure there are lots of other suggestions on there way too!

Good luck! :thumbs:
 
Another way is to chose your f depending on your depth of field required then use histogram to determine how under/over exposed the shot is when you change the shutter speed.

Ie have a play! Muchos fun way of learning! Then use a book to back up the theory!
 
Hi James, I see you are new here and probably new to DSLRs. Dont get too confused, when you are starting out use the Av aperture priority or the Tv speed priority on your camera and it will set the other value for you. Don't try and run before you can walk or you will get too confused. Just get used too the camera and watch what settings it selects for your given aperture or speed.
 
experiment. u have a digital camera so don't have to worry about wasting film. you will find a happy medium for different situations after a few experimentation sessions on the M (manual) setting. I only find i use the manual setting if I want to do something with light trails or night photography, or if I want to underexpose a shot. Don't forget ISO will affect the shutter speed too.
 
Hey guys cheers for the replies. Just been in the garden and suddenly evertyhing started to click n now i think ive got it. Question is my lens seems a bit soft when trying macros although as said i am new and its the canon 18-55mm IS on a 450d. I am sure things will get better soon.
 
To understand this you need to understand a little theory. The shutter speed controls 'the degree of blur' and the aperture contrils the depth of field - that is the area either side of the point of focus that is acceptably sharp. (There are other factors effect this too but let's keep it simple.) So if you want to shoot a fast moving subject and 'freeze' the action choose a high shutter speed if you want a large DoF then choose a small aperture. If you work in S priority or A prioty then the camera will choose the one you don't! EXPERIMENT - you can see the result immediately and shooting is cheap - compared to the old film days! HTH Worry about full manual once you have mastered things thus far!

In simple terms - a fast shutter with a wide aperture will give you the same exposure as a slow shutter with a small aperture....but with a totally different result!
 
Jamess220191 said:
Hey guys cheers for the replies. Just been in the garden and suddenly evertyhing started to click n now i think ive got it. Question is my lens seems a bit soft when trying macros although as said i am new and its the canon 18-55mm IS on a 450d. I am sure things will get better soon.
Click to expand...

Try using liveview for macro on your 450d. You can zoom in on liveview on a set square and manually focus until the subject is sharp as possible. You may want to look into buying a lens specific for macro if you plan on getting into it. Make sure it's set up on a tripod too, and set the shutter to a 2 second delay (if you don't have a cable release) so not to shake the camera when pressing the shutter release button. Feel free to share your pics too in the 'general photo sharing' board and people can give C&C
 
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