UNDERSTANDING YOUR CAMERA’S APERTURE

Photo credit:  Raquel Photography

UNDERSTANDING YOUR CAMERA’S 

APERTURE

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The first step in understanding camera aperture is to get a clear picture in your mind as to what it actually is. Think of a human eye. Your camera’s aperture can be likened to the pupil, which opens and closes to allow differential amounts of light through the eye to the light sensitive retina behind it.

Put quite simply, your camera aperture is the opening in your camera’s lens that allows differential amounts of light through the lens to the camera’s light sensitive sensor behind it. Together with the ISO value and shutter speed of your camera, it controls the light exposure used to create your photograph.

aperture 1
Photo by:  Dwayne Bent
The size of your camera aperture is controlled by settings called f/stops. The smaller the f/stop value, the larger the camera aperture (pupil) and the more light that passes through the lens to the camera’s sensor. The larger the f/stop value, the smaller the aperture and the less light passes through.
Digital cameras allow you to choose from an f/stop range dependent on your camera lens’s capabilities. For example purposes, let’s say from f/1.4 to f/22. Imagine that you’re sitting in a dark room: the pupil in your eye (camera aperture) will be fully open to allow enough light through to your eye’s retina to enable you to see more clearly. This would be f/1.4 on our example scale. If you then walk out of the dark room into bright sunlight, the pupil in your eye would close considerably to prevent you from becoming blinded by the sun. In our example scale, this would mean the aperture would close to f/22.
aperture 2  This example uses extremes at both ends of the f/stop scale, but of course there are steps in between. If you change your aperture setting on your camera from f/1.4 to f/2, the aperture is smaller than it was at the f/1.4 setting. It lets half as much light pass through the lens to the camera’s sensor than it did at the f/1.4 setting. This remains true each time you move to the next highest f/stop value.
If, however, you change your aperture in the other direction from f/2.8 to f/2, then the reverse is true, and the aperture is now larger than it was at the f/2.8 setting, and twice as much light passes through to your camera’s sensor. This again remains true each time you move to the next lowest f/stop value.

Changing your f/stop value has two different effects on the end result of the photo you take. It determines both how much of the photo will be in focus (the depth of field) and—working in conjunction with your ISO and shutter speed values—determines how bright or dark your photo will come out.

The term depth of field refers to how much of an image is actually in focus. When you look through your camera and focus on a subject, there will be some amount of material both in front of and behind the subject that is also sharp and in focus. After that, focus will drop off and anything that is farther away from your focal point will appear soft or out of focus. As a general rule, approximately one third of the range of material in focus falls in front of the focal point and two thirds of the range of material in focus falls behind the focal point.

aperture 3

Photo brightness is affected not only by camera aperture settings, but also by ISO values and shutter speeds. This is how your camera aperture affects the brightness of your photo. The larger the f/stop number, the smaller the aperture size. Therefore, less light is allowed through your lens, and your photo will be darker. The smaller the f/stop number, the larger the aperture size. More light is let through the lens, therefore your photograph is brighter.

aperture 4

I hope that you found this article useful.

About the Author:

This articles was written by Peter Cannon from howtotakegoodphotos.com with further advice on how ISO and shutter speed settings affect your photography.

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Once again, thanks to PICTURE CORRECT and Peter Cannon for this great article.  This is a bit of technical information that I think every good photographer should know, whether your camera is fully automatic, or, if you want to do it all manually.  As long as you understand what your camera is doing, you will be better off, no matter what.   Great information.

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WINNING PHOTOS FROM THIS WEEK: MARCH 30TH, 2017

WINNING PHOTOS FROM THIS WEEK:   MARCH 30TH, 2017

 

Photo by Pamela Locke

Some people are blessed to have Mother Nature bless them with beautiful trees, light fog just at the right time.  Or, Pamela knows how to take a rather overcast day, and find the beauty in it.  Pamela always seems to find the right time and the right places to photograph.  Her quote about this photo:

Small places! 💛 There hasn’t been much sun this winter, however there has been plenty of atmosphere. This little place caught my eye early on a foggy morning.

Lives in: Natchitoches, Louisiana

Check out Pamela’s other great photos on her Facebook website by going to:

Photo by Jim Miller

You know what makes a great photographer?  It is when you catch a person, in their natural environment, with true feeling.  Can’t you just tell this artist is really good, and deserves to be on the street entertaining everyone?  I want to listen to him.  Congratulations Jim on capturing FEELING.

Here is the information about this photo from Jim Miller:

Walking the streets of Strasbourg, France, there were a number of very good street musicians. I Especially enjoyed this guy, perhaps because he put so much emotion into his playing, even though much of his audience was more interested in shopping or eating.

Lives in: Loudon, Tennessee

Photo by Adriano Lompi

Some people just know how to take pictures of flowers correctly.  They have the right depth of field, and either they add the water on the flower, or it just happens to be there.  Whatever the case is, Adriano Lompi is a true artist when it comes to taking pictures of flowers.  I have been following his artwork for some time, and I am always  amazed that almost every flower photo is just this beautiful. Congratulations Adriano Lompi for winning this week’s list.

Lives in Asti, Italy

 

 

Photo by Jose Manuel Rodriguez

Sometimes when I post wildlife photos as a winning photo, it seems that I always post the wild, ferocious tiger, or giraffe.  But, the beauty of a small bird is so often missed, and Jose Manuel Rodriguez is a professional at capturing these beautiful creatures.  Sometimes we see these birds fly around but hardly ever get the equipment to see how beautiful they really are.  Jose really captured this beautiful bird with this shot.

Lives in: Algeciras, Spain

PICOGORDO.Coccothraustes coccothraustes

This is an artist who I am very intrigued with.  He has made his appearance once before on my special of: “The Art of Black and White”.  But, not only is he so well rounded in color and black and white, but, his vision is incredible.  This capture of flowers on the cement is unique.  Tastefully done, composed so well, it just strikes me as one that would be a favorite on the wall of many people’s homes.  Congratulations to Varma on such a great photo.  I think we may see more of his work.

Lives in: Rajahmundry, India

To see more of his work, go to his Instagram page:   https://instagram.com/satyavarmachilakalapudi

PORTRAIT OF THE WEEK:

Photo by April Reeves

“Tiny Dancer”

April Reeves has become one of my favorite portrait photographers.  The class and beauty of her portraits is second to none.  And her sweet little models are beautiful too.  That helps.  But, the posing, the vignette, the props, the soft tone to the picture all make it such a masterpiece.

Thank you April for creating such a great photo.

To get more information about April Reeves go to:

Lives in: Lafayette, Louisiana

Or her main website:

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There you have 6 of the best photos from off the internet found this week from great photographers.  Congratulations to these winners. 

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