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Many interchangeable-lens cameras, be it DSLR or mirrorless, are sold today with what we call "kit" lenses. Current kit lenses, in general, thanks to computer technology and advanced manufacturing techniques, are more capable and of higher quality than those of yesteryear. However, many of us who use interchangeable-lens cameras feel the gravitational pull of other lenses that are not yet in our bags.
Adding gear to your quiver is all about choices and selection and, in photography, we often find ourselves at a sort of "gear crossroads." The first crossroad is during the initial purchase of a camera: what brand, how many megapixels, which kit, etc. The next is when we debate which lenses to add to our camera bags or, to not add lenses at all.
Focal Length Explained
Before we go any further, let us talk, very briefly, about lens focal length. For years, with SLR and DSLR cameras, the 50mm focal length has been known as "normal" or "standard." The perspective afforded by the 50mm lens, when used on a 35mm film camera or full-frame DSLR, closely approximates that seen by your own eyes, minus your peripheral vision. Got it? Good.
What is focal length? The focal length of a lens is the distance from that lens's rear nodal point to the image plane (often illustrated by a "Φ" on the top plate of a camera body) when the lens is focused at infinity. Changing this distance by zooming or putting different lenses on a camera changes the photographer's field of view.
The wrinkle... digital cameras with smaller sensors will change the perspective of that 50mm lens, since your eye (and the sensor) is looking through a smaller portion of the projected image circle. So, when shopping for lenses, always pay attention to the "35mm equivalent" specifications to apply what you just read about 50mm lenses and what you are about to learn about the other focal lengths. For the purposes of simplifying this article, we will keep the numbers in the full-frame or 35mm world.
Any lens with a wider view than that of a standard lens on a full-frame sensor, for example, is referred to as a "wide-angle" lens. The wider field of view is quantified with a focal length smaller than that of the standard lens, i.e. 24mm coupled with a full-frame sensor. A telephoto lens is one with a focal length that's longer than a standard normal lens, which sees a narrower angle of view and captures a magnified image.
Adding a Lens to Your Bag
Camera kits, in general, come with either one- or two-lens options. Single-lens versions usually have a wide-angle to normal or slight telephoto zoom lens (i.e. 18-55mm zoom). A second lens is most likely a farther-reaching telephoto (i.e. 55-200mm zoom). These kits are designed to give you maximum versatility along with minimal cost and minimal weight.
"One of the best ways to improve your photography is to use a high-quality lens that is designed in such a way that you can better express your artistic vision."
May I mention the drawbacks of adding additional lenses to your camera bag without dissuading you from purchasing a new lens? I hope so, or I will not be working at B&H much longer. (So, whatever you do, when you finish this paragraph, KEEP READING… and buy a new lens!) There are two possible negatives to adding to your lens collection. The first is: cost. More gear, more of your hard-earned money is invested in your photography. The second: mass. What do I mean? You will figure it out when you try to add a lens to a small camera bag that was not designed to accommodate additional stuff or, if your bag had extra room, you might wonder why your shoulder has gotten sorer, quicker. Adding lenses (or any other gear) to your bag requires more space and adds weight.
Are you still here? Still interested in adding a lens to your bag? Whew. Good!
I will go on record as saying this: One of the best ways to improve your photography is to use a high-quality lens that is designed in such a way that you can better express your artistic vision.
What do I mean by this? Two things. First, the visual improvements in your photographs might be noticeable when you make the switch from a kit lens to a more precise optical instrument; better sharpness, color rendition, focus performance, etc. All of those things will combine to help get you a better image. Secondly, there are dozens of different types of lenses that are much better suited than a kit lens for many photographic chores and, having one of those in your bag may bridge the gap between snapshot and suitable-for-framing.
Primes vs. Zooms
Before we look at lenses, a quick treatise on the age-old debate of primes versus zooms. A "prime" lens has a fixed focal length. A zoom lens expands and contracts (internally or externally) and has an adjustable focal length.
Prime lenses almost always have better optical quality than zooms of the same focal length neighborhood, but today's zooms are very good and always improving to the point where fewer and fewer photographers carry prime lenses anymore. Zoom lenses almost always contain more glass elements than a prime lens, and the more glass that light has to pass through, the more chances are that the light is degraded in some way.
The largest single benefit of the zoom is the versatility: the photographer can stand in one place and frame the image in the viewfinder, or on the LCD, by zooming in or zooming out from a subject. With a prime lens, either you, or the subject, may have to move to compose the shot you envision.
The biggest benefit of a prime lens, aside from optical quality, is the fact that many have larger light-gathering power than their zoom brethren. A larger-aperture lens allows a given camera to photograph in less light than one with a smaller aperture, such as those common to zoom lenses. The secondary benefit is that they are usually lighter and smaller than zoom lenses.
The Nifty Fifty
There is an old-school philosphy that suggests that, if you want to learn photography, your first lens should be a standard prime. For many photographers these days, they start, right or wrong, with one or two kit lenses. I will not delve into the educational theory about what lenses are best for beginners, but I will tell you that a solid, high-quality, wide-aperture 50mm lens is a great addition to your bag.
On a full-frame camera, the 50mm is perfect for many photographic tasks: travel, landscape, portrait, group shots. On a camera with a smaller sensor, the 50mm is still versatile and, for portrait work, it is superb.
The other good news, you can easily find a superb 50mm f/1.8 lens that will not require pawning your inheritance. A top-tier 50mm f/1.4 lens will set you back a lot more, but some people prefer the extra light-gathering capabilities of the larger aperture.
Why do I always carry a 50mm f/1.8 lens in my camera bag? Well, there are several reasons. It is small, light, and unobtrusive. The large aperture makes it my go-to lens for handheld low-light photography. And, it is one of the sharpest lenses I own, so if I am doing night photography on a tripod and I notice I am using a zoom lens around the 50mm focal length, I will swap it out for the better image quality of the 50mm prime.
Learning theory aside, I will not hesitate to recommend a quality 50mm prime lens for everyone's camera bag, like the Canon EF 50mm f/1.4 USM lens.
Yes, you can use standard and telephoto lenses for landscape work, but many of the masters of photographing landscapes produced their art with a tried-and-true wide-angle lens. Many photographers just starting out in the world of photography are drawn into the magic of the telephoto—reaching out farther and farther to capture that distant object or scene. However, some of the best-known landscape images of our time were created with relatively inexpensive and compact wide-angle prime lenses.
The late, great Galen Rowell was a big fan of his Nikon 20mm and 24mm. The versatility of a wide-angle lens extends past landscape photography, as it also makes a great travel companion to your favorite town or city. Nikon's latest 20mm offering is the AF-S NIKKOR 20mm f/1.8G ED lens.
The popular genre of "street photography" is as popular today as ever. When I think of street photography, I think first of the legendary Henri Cartier-Bresson, the undisputed master of the genre. What did he use for the vast majority of his images? A Leica rangefinder camera and a 50mm prime lens. If that does not make you want to run to B&H and grab the first 50mm lens you can get your hands on, I do not know what will.
Other artists in the street photography field prefer a 35mm lens and its wider perspective. Another thing to consider if you want to blend into your surroundings when looking to make photographs on the street is your physical presence. A 50mm or 35mm prime lens is a fraction of the size of many wide-to-normal zoom lenses and this will allow you to slip in and out of scenes more easily to capture your chosen moments stealthily. The Zeiss Planar T* 50mm f/1.4 ZF.2 is a street-photography machine.
In-your-face sports photography is the domain of the telephoto lens. Watch any professional sporting event and you will see armies of photographers on the sidelines wielding enormous, heavy, expensive lenses. If you are going to be a professional sports photographer, by all means, get the best and biggest lens that your budget allows, but for most of us, the occasional action of a little league baseball game or outdoor kids’ soccer tournament is a more likely photographic scenario.
If you got a two-lens kit with your camera, chances are you can reach out to 200mm or 300mm, depending on your kit. Many pro sports photographers are likely working the sidelines with lenses that range between 200mm and 400mm. That means you are reaching just as far onto the field as many of the pros with their huge lenses. The difference is that their larger optics are allowing more light to enter the camera, allowing them to shoot at faster shutter speeds while simultaneously reducing their depth of field to better isolate subjects from the background.
The price tag of a large "professional" telephoto lens makes most of us cringe. However, there are more economical solutions that will allow you to improve upon your telephoto kit lens without breaking your wallet. Still expensive, but not when compared to their f/2.8 cousins that cost around four or five times as much, the 300mm f/4 lenses offered by many manufacturers are sharp, fast, and much more portable. Compare the Nikon AF-S NIKKOR 300mm f/4 IF-ED lens to its f/2.8 brother and see the differences in size, weight, and cost.
Another outside-of-the-box option is the classic mirror lens. Mirror lenses are not great for low-light shooting, since their maximum apertures are usually in the f/5.6 - 11 range, but, for extreme telephoto and very good portability, they cannot be beat. Just be sure to read up on them so that you are familiar with the benefits and drawbacks of mirror lenses. The Samyang 500mm f/6.3 Mirror lens represents a relatively inexpensive way to get into super-telephoto imagery.
The classic portrait lens has always been the 85mm lens. Prime lenses of this focal length, and the 105mm range, are staples of many portrait photographers.
Like the price-point differences between the aforementioned 50mm f/1.8 and f/1.4 lenses, the same economics apply to your choices of portrait lenses. Many manufacturers make 85mm lenses with f/1.8 and f/1.4 maximum apertures. You will likely find that the quality is almost indistinguishable, but, again, some prefer the slightly larger light-gathering capabilities of the f/1.4 lenses.
One of the most famous portraits of all time, Steve McCurry's "Afghan Girl," was taken with a 105mm lens. When he and National Geographic found the girl, years later, he photographed her with an 85mm lens.
Sigma offers its 85mm f/1.4 EX DG HSM prime for many different lens mounts.
When you tilt a camera up or down from the horizon, distortion occurs. When you are photographing buildings, distortion is generally unwanted. With today's powerful software, many photographers have access, with a few clicks of a mouse, to some amazing geometric corrections to their photographs; however, if you want to straighten the geometric lines of a building in your image before you open the shutter, you will need to acquire a perspective shift lens or combination tilt/shift lens. The advantage is that you are bending the light entering the camera and not "stretching" pixels in digital post production. The Nikon PC-E NIKKOR 24mm f/3.5D ED manual focus lens features both shift and tilt capabilities.
Tilt/shift lenses from major lens manufacturers have never been inexpensive; however, several third-party lens makers today are producing lines of relatively inexpensive tilt/shift lenses that are meeting the needs of budding architectural photographers like this Rokinon Tilt-Shift 24mm f/3.5 ED AS UMC lens for Sony Alpha cameras.
If you, when walking around with your camera, keep seeing the world in a smaller and smaller frame and find yourself wishing you could get closer to small objects, a macro lens is in store for you. A macro lens is a lens designed specifically for close-up photography and it allows the photographer to get very close to a subject to reproduce it, in the image circle, at life size.
Kit lenses are generally not well suited for macro photography, and this is one genre of photography in which having the right gear might make the difference between enjoying the photographic process, and pure frustration.
Passion for Prime
As I wrote before, today's kit lenses are very capable and dependable, and you can capture fantastic images with them. However, if you are getting passionate about your photography and you want to help yourself improve your images in a specific category, adding a high-quality prime (or non-kit zoom) lens to your camera bag might be just what you need to help advance your artistic vision.
Feel free to comment below if you have questions or would like to know about more non-kit lens options.