With F-values, you have to understand that when F-values are lower (1.4) the camera requires less light. The lens acts like your eye. If your eye was f-1.4, they would be VERY dilated, letting in lots of light. However, during high f-values (16), the camera requires much more light.
Aspect 2 – Shutter Speed
The below 3 pictures are all shot in f-4. In the first picture, we are focused on a candle holder. The shutter speed is balanced with the f-value to create a clear picture. (f-4, shutter speed 1/3 second)
In this picture, the shutter speed was open too long, allowing too much light to enter the camera. (f-4, shutter speed 3 seconds)
And in this picture, the shutter speed wasn’t opened long enough, making the appear darker. (f-4, shutter speed 1/13 second)
As stated earlier, the higher your f-value, the longer your shutter must remain open. (Look at “Aspect 1” again and how f-values relate to shutter speed). The longer your shutter is open, the easier it becomes to have blurry pictures (without a tripod). So, when in lower light where a slower shutter speed is required, how do I keep my pictures from being blurry by trying to hold the camera still for 2, 3, or 8 seconds? For starters, try a tripod. If not, there is one more aspect we can discuss.
Aspect 3 – ISO
ISO is like the old time film speeds. Basically, the way I see it is that the lower the ISO (100), the more detailed a picture is but requires slower shutter speeds. It basically allows the camera to “capture” as much detail as possible. The below image is shot at an f-4, with a shutter speed of 1/2 second, and an ISO of 100. Notice how clear, detailed, and smooth it is.
This last image is shot at f-4 with a shutter speed of 1/100 second. This is a much faster shutter speed than both the previous pictures; however, notice it’s grainier and definitely not as smooth. Basically, Higher ISO = faster shutter speed = decreased chances of blurry pictures due to movement in darker rooms, but = less detail in the picture.
I hope this helps all you bloggy friends out there. Many of you have asked how I take my pictures…the best way is to get out there and practice! Feel free to ask me any questions and I’ll do my best to answer! A great resource that I found was Ken Rockwell’s site and more specifically his pages on “Taking Better Pictures”.
Wow, I think you explained it very well but it’s still way over my head! It’s all new info to me. 🙂 Does all that only apply to cameras like your’s – with adjustable lens and the different lenses that you can switch out? I have a cheap Nikon something but I know there’s probably a lot I can do with it that I don’t know about…
I am going to play with my camera while I am in AR next week and bored to death b/c I won’t have a car and everyone will be at work! HA!! Thanks for the tutorial! GREAT JOB!
I really LOVED this tutorial!! It was explained very well, even for a newbie like me 🙂 I forwarded it on to a friend who just got a new semi-professional camera. Maybe one day I will have one, too.
Great explanation! I don’t know why this concept is so foreign to me but you made it make sense to me.
Thanks so much!
I’m gonna have to bookmark this one! (For one day when we get a better camera.) 🙂
Ditto Tiffany, I need a better camera too.
I also need a WAY better camera but when that day comes, I am definitely going to come back to your tutorial. This is awesome, thanks!! 🙂
Yeah, all I got from reading this was “blah, blah, blah”. I don’t understand momma. You’ll have to show me someday. I’m an idiot & don’t understand! Har. Okay, I love you & hope you are having a good day. LOVE YOU SIDDER!!!!!
Ditto Tiffany, I need a better camera too.
Great explanation! I don’t know why this concept is so foreign to me but you made it make sense to me.
Thanks so much!