Trying to Get Focused

Aperture aka F-stop is the third and final player in the game of Exposure.  Aperture is the mechanism that opens and closes when you take a picture.

Where can I find the aperture???

 It is usually located next to the shutter speed on your LCD screen.  The numbers range from F1.8  to F 2.

They may look something like this: 1.8, 2.8, 4, 5.6, 8, 11, 16, 22

I know there are a lot of numbers but don't worry!  I will keep it simple and only use the extremes.  I'm sure you can figure out everything else in between.

1.8 is a small number but it is a very wide aperture.  Therefore,  it lets in more light

22, a large number,  is a narrow opening .  Therefore, it lets in less light.

Feeling confused??  Don't be!  I will make this simple.

 The smaller the number = bigger/wider aperture = more light

The bigger the number = smaller/narrow aperture = less light


The widest aperture available depends on the type of lens you use.  The lowest Aperture/F-stop available is usually denoted on the front inner rim of your lens.

Example: Canon Zoom Lens EF-S  18-55mm   1:3.5 - 5.6 IS

Basically this means that if my lens is wide open at 18mm, the lowest available aperture is 3.5 When my lens is at 55mm then the lowest aperture available is 5.6.

Does this make sense?  I sure hope so.

                                                                    Because...............

There's more!

Aperture also controls depth of field (DOF).  This basically controls how much of your picture is in focus.

The smaller the number (2.8 or so) the less you have in focus

The bigger the number (22 or so) the more you have in focus


Example:

Subject:  You are taking a picture of a cow that is about 10 feet away from you.

Foreground: There is bright green grass between you and the cow.

Background: There are beautiful mountains about 10ft behind the cow.

Now you have to decide what you want included in the picture.

If you want everything (foreground, subject and background) in focus : Use a smaller/narrow aperture/F-stop number of 22 or so.  This is know as a large depth of field

If you want only your subject in focus and the background blurry: Use a bigger/wider aperture/F-stop of 2.8.  This is known as a shallow depth of field.

Take a deep breath and read below....


If you want to see heaven and hell in the same photo: use a larger number (22)

If you only want to see heaven : use a smaller number (2.8)


Here is a link that aperture.  I found it very helpful.  She breaks it down into four sections.  Make sure you read them all!
You should also check out the rest of her website.  She has lots of delicious recipes!

The Pioneer Woman


Lets end this lesson with a photo.  I managed to take this one while I was doing a 10-step project for class.   I had to take a photo every 10 steps I took.  I did this a total of 30 times.  My fingers were numb by the time I was done.


Feb 15, 2011
46/365
Park Bench

Come back sometime this week and I will put it all together!

       

       Aasiya

Black and White in Color

Despite having a chaotic day at work, I managed to take the first of my three photographs for my weekly assignment, which by the way is due tomorrow.  My original plan for one of the photographs did not work out for a couple of reasons.  First, it was dark when I left work, thus making it hard to take a clear shot without a tripod.  Then I attempted to get the photograph I wanted, but when I turned on my camera it read "NO CARD DUMB DUMB."  Ughhhhh... I was completely frustrated.  I had to come up with something quick, so I stopped by Whole Foods on my way home in search of white flowers.  There were a couple of options, but I wanted something cheap.  The carnations were the best choice next to roses.  I used black construction paper and a white vase for some pictures.  I also used a black storage container for the background.  Overall, I think I did pretty darn good!  I managed to take one photo for my assignment and one for my photo of the day.

I probably shouldn't share this with you, but I kinda cheated on my assignment.  As I mentioned yesterday, I tried to to take a couple of black and white photos in color, but they were a disaster!  I searched for tips on line, but all I could find were examples and I really needed were how-to instructions.  After about a hour of searching my brain started functioning and I remembered reading about auto lock exposure.  Unfortunately, auto lock does not work on manual so I cheated and changed it to "P".  I chose the aperture, manually focused the lens, adjusted my meter for the proper exposure of the flower, auto locked it and focused on the background.

I clicked the shutter and.........

Tadaaaaaaaaaaa!!!!! The picture came out perfect.  All I had to do was adjust the temperature of the photo by making cooler.  This helped brighten the white and remove any yellowish cast.  You can see for yourself.


Feb 8, 2011
39/365
Black and White in Color

Here are the photos for my photography class project.  I have to decide between the two.

Aasiya