Before purchasing, you need to determine the criteria for choosing a lens. They can be ratings such as usability, versatility, lens appearance, aperture, sharpness, design, weight, price, and much more.
Instructions
Step 1
A very important parameter, especially in low light conditions, is the aperture ratio of your future lens. So, if possible, get a lens with a higher aperture. Consider also the fact that lenses that have a constant aperture value will outperform lenses with an interchangeable aperture (their aperture will change when the focal length is changed).
Step 2
The performance of your lens will depend on the materials used in its elements. For example, the use of low-dispersion glass can reduce chromatic aberration, which affects the sharpness of the image and its contrast.
Step 3
Do not forget that some lenses are not compatible with all digital cameras, and even more so they will not work with film cameras. So be sure to check the required parameters before buying. By the way, if you use both types of cameras (film and digital), then you shouldn't buy a lens designed only for a digital camera.
Step 4
Another parameter that should not be overlooked is the weight of the purchased lens. You can compare the lens with others and see which one works best for you.
Step 5
The criteria that will help you determine the durability and strength of a lens are its assembly standards and the construction itself. For example, cheap plastic lenses will be inferior to magnesium alloy lenses. Also, lenses with a metal mount will not deform, which cannot be said about lenses with a mount made of plastic. In addition, you should pay attention to sealed lenses. They are the least susceptible to moisture and dust.
Step 6
When choosing a lens, do not forget to check its usability and ergonomics. Be sure to see if the lens fits comfortably in your hands, whether it is easy to turn the focusing rings or the polarizing filter (if the lens hood is attached to the lens). These simple questions will help you test a new lens, and the quality of the images that will be taken will depend on your answers.
