I get asked quite frequently what lenses I use, or what are the best lenses to buy, so I thought I would do a post on what I have learned so far about DSLR lenses.
I know when I first started looking into buying lenses I was so overwhelmed! There are so many choices and so many brands.
What to take into consideration when buying a lens:
Focal Length
Lenses come in different focal lengths. You can see this written on the the lens in terms of “mm”. The mm number represents the length or distance from the front of the lens to the camera's sensor.
This also means that depending on the focal length of the lens your subject is going to need to be a certain distance from your lens in order for the lens to focus. The smaller the mm number the closer your subject can be to your lens. If there is a larger mm number your subject will have to be further away in order for the lens to focus.
Aperture
The aperture of the lens will also be written on the outside of the lens. If the lens is a zoom lens you will see something like this 1: 4 - 5.6. This number refers to the widest aperture available for that lens. The lens in the example above can be opened up to f/4 at the widest end but only f/5.6 at the longest end.
Generally speaking, you want to purchase a lens with the largest aperture (smallest number) possible. This will allow you to take pictures in low light situations without the use of a flash.
However you should be prepared, larger aperture lenses mean more glass in the lens, which means more dollars you will spend!
Other things to consider
Does the lens have image stabilization?
Do you want a fixed focal length or a zoom lens?
How much are you willing to invest?
Does the lens have auto-focus?
Wide Angle Lenses
Most DSLR cameras come with what is called a “kit lens”. Generally that lens will be a 18-55mm lens. This is also known as a wide angle lens. Wide angle lenses are great for capturing a whole landscape scene.
This picture was taken with my kit lens, at a focal length of 18mm.
This is the Nikon kit lens I have. (If viewing this in reader, please go to my blog to see my links to lenses)
I also have Sigma 24-70mm f/2.8. I bought this lens to mainly do portrait work. I took this picture with that lens. I was really glad to have it with me, since I was taking these pictures in a small living room, I didn’t have a whole lot of room to work with. With this lens I didn’t have to be really far away from my subject in order to get it to focus, nor did I need a lot of light.
You do have to be careful with wide angle lenses, especially when doing portraits. They can distort peoples faces if not shot properly.
Fixed Length Lenses
Otherwise known as “prime” lenses. This means that the lens has one focal length, there is no zoom to it. You are the zoom!
I have a 50mm f/1.8 lens. This is still my favorite lens of all the ones I own, it also was one of the cheapest! I love the shallow depth of field I am able to obtain with it, and the bokeh.
This picture was taken with that lens.
I have found and read that usually prime lenses deliver crisper images than a zoom lens. Although it is a lot more work to be the zoom, especially when photographing young kids!
Other fixed lenses that I have read good things about (and are on my wish list).
Telephoto Lenses
Telephoto lenses are great for when you want to to take pictures and not be seen! They are great for catching wildlife, weddings, sports, or when you don’t want your kids to know you are taking their picture.
I have the Nikon 55-200mm lens.
I took this picture with it.
I really want the Nikon 70-200mm next, but its just a tad expensive! I rented one once from Borrow Lenses, and I fell in love.
This picture was taken with that lens.
There are so many more types of lenses, I just wanted to cover the basics in this post.
Make sure to check out my co-host Lolli’s post as well, it will feature Canon lenses.
The Challenge: This weeks challenge is to make the most of a lens you own. So if you have a wide angle lens, try a landscape shot. If you have a fixed lens with a large aperture, try a shallow depth of field picture. If you have a telephoto zoom lens, see what you can get a picture of in the wild. Be creative!