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ISO: an Explanation for Beginners

2/11/2016

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How does ISO affect exposure of an image?

Exposure triangle. Aperture, Shutter Speed and ISO explained. Photography for DSLR cameras, Beginner Photography
The Exposure Triad, Exposure Triangle. Aperture, Shutter Speed, and ISO explained. Photography for DSLR cameras
Photography and the science of light continues with ISO. ISO is part of the Exposure triad or triangle, and works with Aperture and Shutter Speed to determine how your image is exposed. ISO in a nutshell is how sensitive your camera is to the light. I have already written about Exposure, Aperture, and Shutter Speed.

A lower ISO- 100 means the camera sensor is less sensitive to light. This setting is used in bright light situations to prevent overexposure. Bright midday sunlight, settings with bright light reflecting snow, etc. are times to use a lower ISO. Higher ISO settings are for situations with less light; cloudy days, dusk, when the snow is setting, nighttime, and indoors where there isn't a lot light. 

Increasing the ISO can work well in low light situations to allow you to use a faster shutter speed and smaller aperture to get good crisp focus and deeper depth of field. However, Using a higher ISO can increase the "noise" in your image, making it grainier and foggy looking. 
Below you can see the same shot with the only setting changed being ISO. I started with a low light situation with no flash. I wanted to show  how increasing ISO increases the light in your image. If you enlarge each image, you will notice the increase grain in the photo as the light increases as well.  My settings were f1.8, ss 1/60 and I adjusted ISO from 100 up to 6400. 
This one 50mm 1/250 f1.8 ISO 400 with on camera flash. 
If you notice some wear and tear on these rings, it's been earned. They will be 17 years old August 2017. My husband and I have worn them and earned those scratches, dents and dings, with love, sweat, tears, and just a couple of beers. 
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ISO tutorial for beginners. Photography tips and tricks, How to use your DSLR camera
 I am an Amazon Affiliate. Blogging and sharing information takes a lot of time and effort! So if you are so inclined, follow my link to learn more about Exposure on Amazon! The link below will take you to a search for a huge selection of books all about photography exposure, aperture, shutter speed, and ISO. 
Read about Photography Exposure
Read about Photography Exposure
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Shutter speed: a basic explanation for beginners

1/14/2016

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Shutter Speed: a Basic explanation for Beginners. How shutter speed affects Exposure. Exposure triangle.

How does shutter speed work? 

The shutter speed on your camera can do several different things. It can affect the quality of the focus in your image. It can allow more or less light into your image. It can show motion and action. Or it can freeze a moment in time. Learning to adjust your shutter speed to affect the Exposure of your image can be tricky for beginners, but I am going to share some important ways shutter speed work for your image. If you are interested in Exposure and how the different pieces of the Exposure triad work, you can read more in my post Exposure: A Basic Explanation for Beginners. I give a basic tutorial of aperture in Aperture: A Basic Explanation for Beginners.

How Shutter speed affects Exposure

Exposure is determined three things:  
  1. The amount of light allowed in to the camera. (APERTURE)
  2. The length of time that light is allowed into the camera. (SHUTTER SPEED)
  3. The sensitivity of your camera to that light. (ISO)
Shutter speed determines how long light is allowed to enter the camera. It is expressed most commonly in fractions of seconds. 1/60 shutter speed means the shutter is open a longer amount of time than 1/125. This means that if I have a darker situation, I might use a slower shutter speed, 1/60, to allow more light in to the camera. If I have a very bright situation such as full sun, I may use a faster shutter speed, 1/250 or even 1/640. 

In the examples below you will see a difference in the vibrancy of color and depth of color, just by speeding the shutter speed from 1/250 to 1/640. This was a bright clear afternoon. Even with a shutter speed of 1/250 on the left, the image appears washed out and less vibrant. By speeding my shutter speed to 1/640, I achieved more vibrant and deeper color. 

What else does Shutter speed do? 

Fair question. It's easy to understand that if you have something moving fast and you want to "FREEZE" that motion, You will speed up your shutter speed to freeze the motion. If you want to show motion and have a motion blur, you will slow your shutter speed. 

I typically try to use at least 1/125 shutter speed and normally 1/250 shutter speed for portraits. It helps get a clean crisp focus with less motion blur. 

Below are some shot I took with a 1/125 shutter speed because I was shooting objects that will move quick! ANIMALS AND KIDS. I wanted to Freeze them, before they moved! All of these shots were inside with indoor lighting. So, with my aperture opened up to let in light, I was able to use a faster shutter speed to compensate for wanting a sharp focus on my moving targets! For full disclosure, I did use on camera flash for these as well. Notice that bokeh or shallow depth of field? That's because of the wide open aperture. The two of my sweet baby boy Teller, were shot with a 35mm AF-S Nikkor f1.8 lens. My handsome nephew's picture was taken with an 85mm AF-S Nikkor f1.8. I rented both of these lenses from Lensrentals.com. You can read about my experiences renting lenses on these posts HERE.
Full disclosure: The links above for my amazon affiliated link. Blogging and keeping this adventure going is time consuming and I decided if I could make a penny or two, then what the heck? Links will be for items I have used or want to use and review! Thanks for using my links! I appreciate the help!

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The best nikon lens for the money

1/11/2016

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What lens is best for Beginners. Nikon Lenses, Beginner Photography, Photographers

What lens should I buy first for my Nikon DLSR?

I shoot with a Nikon D7100. This is a crop sensor, DLSR, and is a great camera. I've moved up from the D60 originally, to the D3100 and now the D7100. Now you might notice a pattern, I like Nikon. Not because I dislike other brands, but because Nikon is what I have used, and gotten used to, and all my gear fits Nikon. So, for all you Canon lovers, I'm not knocking your camera! I just like mine. 

I shoot mostly portraiture and even my outdoor wildlife photography is more portraiture of the subject. I don't do a lot of wide open landscapes and sweeping views of the countryside. I typically pick a subject that I want to capture and focus on that. For the kind of photography my favorite lens is my 50mm prime. It stays on my camera most of the time and is my go to for a quick snapshot or for my client sessions.  It gives great focus, great bokeh, and the open aperture makes shooting on darker days easier. 

Now, there are more expensive 50mm lenses. They have larger apertures and may have even better focusing. But, when you can get a 1.8 aperture for as reasonably as you can, it is a great option. Especially for learning your new DLSR and experimenting with new forms of photography. It can help you turn out beautiful images. It has been a great addition to my gear. 

This lens has really upped my photography game and I love experimenting with it. 

The images below are just some examples of pictures that I have taken with my 50mm on my D7100.
This shot was in low light at night in my living room. You can see the nice bokeh in the background and the clarity of focus on her eyes.
This picture was taken on a grey gloomy day without flash. You can see the nice bokeh.
This is a ring shot I did for a wedding. I love the softness of the background and the detail of the rings.
My first self portrait.
Full disclosure: The above is a link to my amazon affiliate link. I can make profit from your purchase of the lens using the above link. Keeping a blog going is a time consuming venture, so I chose to become an amazon affiliate to review products that I use. Thank you for using this link if you are interested in a 50mm lens! 

Tell me what your favorite lens is and why! 

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Aperture: A basic explanation for beginners

1/10/2016

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Focus and light

Aperture: A Basic Explanation for Beginners. How aperture affects Exposure. DSLR, Photography, Lenses
 Photography is a science of light. How much light, for how long, and from where, determines the exposure of your image. And exposure is the the base of your image. There are loads and loads of explanations of aperture, shutter speed, and iso and how they affect exposure. I cover Basic Exposure in my post Basic Exposure for Beginners. Here is my take on APERTURE. 
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Aperture is set in f stops. Aperture goes as wide open as 1.2 and as closed 32. The aperture you are able to shoot with will vary depending on the lens. The wider open the aperture, the more light gets in to your camera for the image. Conversely, the smaller the aperture, the less light will get in to your to you sensor. Each FSTOP higher closes the hole smaller and smaller. It can get kind of confusing when starting out, because people may refer to using a "large" aperture meaning they used a small f-stop number which makes for a larger opening. F 1.8, which is the most open setting on my favorite 50mm prime lens, is as large an opening as that lens will open. The graphic above actually starts in the upper left corner with a "higher" or smaller aperture f stop, and ends in the bottom right corner with a "lower" or smaller aperture. 

Aperture and focus

Aperture basically determines how at what distance your lens will focus and how far it will focus. For example, If you are shooting a your kids in front of the Grand Canyon, you probably want your kids smiling faces in focus and a large portion of the Canyon, too. You want to be able to see where your kids were at the time of the picture. A smaller opening in the aperture  will make for a longer depth of field. And remember, smaller aperture means larger number when changing your settings. 

Lower f stop numbers mean a shorter depth of field. Which in the example above would mean that your kids faces would be in focus, but the background behind them would be more and more blurred the further away they were from the subject.

Below I  have some examples, where the only setting I changed was the aperture or f stop. Notice the subject is the dark duck. I wanted these pictures to have the back lighting so it would stick out how the background was being blurred and sharpened using the aperture. I didn't worry about lighting my subject at this point. 
I shot these with a kit lens 18-55mm becuase I wanted to use a lens that a beginner would most likely have. You can see an even stronger difference with lenses that will open up to larger apertures. All settings stayed the same except adjusting aperture. Notice the stronger difference in the lack of focus of the background from image one, to the more focused back ground of image 6.

Aperture and light. 

You will probably notice, that when the aperture is larger larger, the image lightens. That's because more light is getting in the camera. This is one of the ways you can lighten your image in dark situations, just keep in mind that this blurs objects and scenery that are not the same distance from your camera, because it shortens the depth of field. 
The opposite is also true, by decreasing the size of the aperture, I can decrease  the amount of light on a bright sunny day. However, this would not be the optimum way of doing this by itself if I were taking portraits or wanted a nice bokeh, because it will also bring my my background into clearer focus.
While not a beautiful image, I have done NO editing to this picture at all. It is a good example of a very short depth of field and how aperture affects depth of field. 

My focus is on the leaf and grass just to the right and below the center of the picture. By having the aperture at 1.8 (as wide open as my 50mm lens will go) it gives a very short depth of field. The background and the foreground have pretty good bokeh or blurred effect. If I were shooting a landscape I wouldn't want this blurred  effect. But, for portraiture it can draw your eye into your subject. 
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What did you like? What was confusing? What are you ideas? Let me know!

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Exposure: a basic EXPLANATION of Exposure

1/10/2016

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Exposure: A Basic explanation. Beginner Photography, ISO, Aperture, Shutter Speed, Exposure Triangle

What is exposure?

You may be asking "How do I get the right exposure in my pictures? How does exposure work? How does aperture work? How does ISO work? How does Shutter Speed work? What do I do now that I have this big fancy camera? 

Don't worry, I asked the same questions. Everything I know is from trial and error. Lots and lots of errors. I mean LOTS. I watched videos on youtube, read tutorials, pinned 50 blue million tips and tricks on photography. By the way, just pinning them does no good. You kinda have to go read them and put them into practice........
Anyway, I prescribe to the ideology that if you really want to learn you read it/see it, do it. teach it. So let me pass on what I have learned!

Photography is a science of light

Photography is all about light. How much light, for how long, and how sensitive your camera is to that light, determines the exposure of your image. 
How much light is determined by Aperture.
How long the light is allowed in is determined by Shutter Speed.
How sensitive your camera is to light is ISO. 

The Exposure Triad

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All three settings can be manipulated depending on the type of picture you are taking. Faster shutter speeds are used for action shots like your son's basketball game. For this picture you probably want to open the aperture for more light and increase your ISO because basketball games are typically inside and the lighting may be poor. However, if you want a little motion blur you may slow your shutter speed just a bit. 

Increasing your ISO can be helpful indoors, or on really dark gloomy days. Just be aware of your camera's limitations. Some entry level DLSR's are quite good at mid range ISO settings. But really high ISO's are normally best left to upgraded models. 

Aperture is also good for increasing or decreasing your exposure. Just be aware of your lens Aperture capabilities,  and pay attention to how much detail you want in your foreground and background. 
The links below will be added as I publish each individual post! 
Aperture Explanation
Shutter Speed Explanation
ISO Explanation
I would love some feedback! What made sense? What was confusing? What are your ideas for explaining exposure?
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    JenniLeigh

    Wife, daughter, aunt, nurse, biker chic, aspiring photographer, pretend gourmet chef. That's me! I'm living the Just Peachy Life. This Blog will now be more dedicated to photography and the art form that speaks to me the most. I am moving the lifestyle and home-life posts to the Living the Just Peachy Life Blog to separate the two! Read more about me and _Living the Just Peachy Life!

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