Quick Guide When Buying a DSLR Lens
Do you feel unable to decide in choosing a lens for your DSLR? Yes , it is very annoying, because cost of lens is among the consideration. How would you look for the appropriate DSLR lens? When shopping out there for the best DSLR lens, there are several aspects you need to think of. The simple being cost and compatibility; if it is not suitable for your DSLR camera, there's really no point to buying a lens, regardless of how extraordinary it is. Thus, before choosing a lens, ask yourself exactly what you need, exactly what is the subject you want to shoot when using the lens? Below you will find the three main factor that need to be considered before you buy your lens to suit your DSLR camera.
Focal Length
Distance of the objects is the impact to decide the focal length. Closer object using shorter focal length, and further object using longer focal length. So, how you can decide the number of focal length? Consider the following examples.
Below 35mm: Landscapes and Interiors
35mm to 70mm: Portraits
70mm to 300mm: Portraits and Sports
300mm and higher: Wildlife and Sports
While cost and compatibility are essential things to keep in mind, one of the keys to locating the perfect lens is to understand what you want the lens to achieve. You might be planning on capturing portrait photography, sports photography or product photography. For instance, should you be considering on shooting sports photography, you'll be searching for a telephoto lens that will permit your subject to fill the composition even coming from a distance. A macro lens will work perfect for product photography to capture tiny details with excellent focus. A wide-angle lens works well for landscapes because it can take everything within.
Prime or Zoom Lens?
Prime lens is the lens that cannot zoom in or zoom out, but Zoom lens can do so. Zoom actually is controlling the focal length. Probably people will ask, why still have to choose for prime lens if I got better choice that can be zoom as I like? Here is some simple comparison.
Cost: For same specification, prime lens is cheaper than zoom lens. Quality: Most people are agree this, the picture taken by prime lens is better than zoom lens. Weight: Prime lens is lighter, zoom lens is heavier. Speed: In term of aperture, prime lens is faster than zoom lens.
Flexibility: If you want to capture photo for all focal length such as landscape, interior, portrait, sport. You just need one zoom lens to zoom in and zoom out. If you prefer prime lens, may be you need three. Price: Do you think total cost for three prime lenses will cheaper than one zoom lens? Portability: Do you think carry three prime lenses will easier than one zoom lens?
However, it's not just the type of DSLR lens that you need to be considering (though it's a great place to start). Not every DSLR lenses are made equally, even if they are in the same class of lenses. For instance, the Sony Alpha line has two excellent macro lenses, the SAL50M28 and the SAL100M28. Both DSLR lenses allow you to capture small details in excellent focus, but they also have their own individuality. They have different focal lengths and therefore would be used to capture totally different images; (the SAL50M28 can get more background in the picture; the SAL100M28 lets you get detailed shots from a distance).
Maximum Aperture
Now what is the reason we have to decide for maximum aperture for a lens? Because the lenses have the wider maximum aperture normally are costly. Wider aperture allow more light in, narrower aperture allow less light in. If you taking indoor picture, the light condition indoor is not as good as outdoor, so you need wider aperture to let more light in, if not, the picture you taken will look dark.
Another reason is to suit shutter speed. We need faster shutter speed to adopt picture for fast object. When your shutter speed is set to very short time, example 1/2000 second (just 0.005 second), and you do not set your aperture wider, then your picture you taken will become underexposed, it looks dark.
Finally, consider the depth of field; the blurry background is caused by this impact. Wider aperture decreases the depth of field, as well as the image background is blurry; narrower aperture boosts the depth of field, hence background sharper.
While looking into the choices of a lens, take into account the details above, Remember the zoom range (how far could you zoom in and how far out can you zoom out), the depth of field (a deep depth of field means most or all of your image will be in focus, even if zoomed in) and any special needs you've or special enhancements the lens can offer.
Eventually, it's not just about finding an appropriate DSLR lens. There are many DSLR lenses out there that can meet your needs. But it's also about finding a reliable DSLR lens. While maintaining cost and compatibility in mind, along with what you need to capture and what your needs as a photographer are, along with sound information, you'll be able to find the perfect DSLR lens for the job.
