500mm Câmera Focal Lentes para Pentax

How to Buy a 500mm Camera Lens

When it comes to camera lenses, the countless options and specifications can be confusing. Different lens types are appropriate for different photography situations and having varied choices can make the most of a DSLR cameras abilities, with a 500mm telephoto lens serving as a key tool in a photographers toolbox.

What does focal length mean?

A higher number refers to increased zoom and smaller aspect of view, with smaller numbers meaning the opposite.

• The human eye is equivalent to roughly 30-50mm, for perspective.
• A lens with two numbers means there is a range or adjustable zoom. A zoom lens with a 70-300mm range of focus, for example, can be used in numerous shooting environments. Lenses with zoom capability may have decreased optic performance compared to prime lenses, or those with one focal length.
• A full-frame camera provides an accurate view of the expected focus, but certain sensors may require conversion to find a lens to give the desired effect.

Why should I buy a 500mm lens?

Casual photographers do not need such a powerful telephoto lens, but those that do will appreciate their ability.

• Wildlife is one subject where long lenses are used. A telephoto lens can give a soft background if the narrow angle of view is utilized. This means focus is on the animal and not on busy backgrounds, like woods or water. Other lenses may require a wide-open aperture to create the same effect.
• Many DSLR cameras come with lenses nowhere near the length of a 500mm lens. A Pentax Camera, for example, may be limited if its only used with the stock glass.
• Since a 500mm model is not adjustable, moving the camera away or closer to the subject may be required. This focal length can be used in a variety of situations if drastic movement can be made, but this is why it is important to have different options for different situations.

Which features should be considered?

Every 500mm model differs in ways that can affect shooting.

• Not all cameras can support every model since the mount used on a Pentax body may accept different glass from a different brand. Some glass is compatible with multiple manufacturers but matching the manufacturer of both glass and camera is one way to help to ensure a fit.
• Weight should also be considered, especially when you plan to carry the telephoto glass outdoors. Additionally, a 500mm model can add significant weight to a pack.
• In situations where the glass will be used outdoors, you should consider a filter. Some may come with a filter already, or they can be purchased separately. Polarization, UV protection, and special effects are all additions that the use of a filter can provide.

Content provided for informational purposes only. eBay is not affiliated with or endorsed by Pentax.

>