Digital Camera Lens
How to Buy Digital Camera Lenses
Executive Summary about Digital Camera Lens by Gary Hendricks
digital slr camera lens
Choosing a Suitable Focal Length
Keep in mind that the performance of lenses can differ from camera to camera, with the magnification power behind a lens generally being greater on a digital camera than on a 35mm film-based camera.
When you hear about fast and slow lenses, reference is being made to a lens’s maximum aperture, which is the maximum amount of light that a lens can let in. Maximum apertures are measured in f/stop numbers, which are actually a ratio of the size of the lens aperture and focal length.
The Ins and Outs of a Zoom Lens
Unlike a fixed-focal-length lens, a zoom lens often gives you the diversity of a range of focal lengths all rolled into a single adjustable lens.
Add-on Lenses
If your lens utilizes aspheric lens elements, then you can rest happily with the knowledge that your lens will help produce sharper photographs and help keep lens weight to a minimum.
Lenses using internal and automatic focusing also keep lens weight down thanks to less moving parts, and of course allow for faster focusing.
Tips for Purchasing a Digital Camera Lens
Executive Summary about Digital Camera Lens by David Peterson
Make sure you buy a good camera lens when purchasing a camera. Buy a good camera as well, but don’t neglect a good camera lens.
Why? The lens is what your camera sees all your shots through. With most compact digital cameras, you can’t change the lens. Avoid a plastic digital camera lens because it doesn’t have the clarity of a glass lens.
What model of lens?
Ensure you purchase a lens that works with your camera too. A Nikon camera lens usually won’t work well with a Canon camera.
The most common lenses are: Wide Angle, Normal and Telephoto. The type of lens is determined by the Focal Length of the lens. Lens Focal Length 20mm to 35mm
Zoom; A Zoom lens can change it’s focal length to zoom in. So using a film 35mm lens on a digital camera has an effective focal length of 56mm.
A 35mm lens which gives a medium wide angle on a film camera acts as a traditional lens on a digital camera
Lens Speed
The ’speed’ of a digital camera lens also defines a lens. More expensive lenses have more advanced features.
Try to find a digital camera lens with this feature.
A badly composed picture won’t look great with a great camera lens.
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