SLR Camera Lens
SLR Camera Lens Buying Guide
Executive Summary about SLR Camera Lens by Brian Auer

nikon slr camera lens
Determine Your Budget. Determine What Type of Lens You Want. The main categories of lenses are: fish-eye, super-wide, wide, standard, telephoto, super-telephoto, and macro (there are other specialty lenses too). Most of those categories can also be split into prime and zoom lenses. I narrowed my search down to super-wide zooms, super-telephoto zooms, and prime macros.
Super-Wide: Less than 20mm focal length.
Wide: 20-30mm focal length.
Standard: 30-50mm focal length.
Telephoto: 50-200mm focal length.
Super-Telephoto: Greater than 200mm focal length.
Prime: Fixed focal length.
Zoom: Variable focal length.
Go to your favorite online lens source and create a wishlist for each type of lens you are thinking about. I found 9 super-wides, 8 super-telephotos, and 4 macros– but I included primes and zooms.
Prioritize Your Options. Typically, the more expensive lenses are also the better quality lenses (aside from price differences of around $100). Pick Your Flavor. I had 3 categories to decide between, and after my research I had one lens from each category. I chose to get two lenses instead of one!
When you’re picking out lenses, there’s no right or wrong choice.
SLR Cameras – What Is A Single Lens Reflex?
Executive Summary about SLR Camera Lens by Tom Bonner
Since nearly all SLRs accept interchangeable lenses, it would appear they should be known as multiple lens reflex (MLR) cameras.
Early cameras were similar to the view cameras used today. With a roll of film in the camera, the photographer could fire off numerous images without reloading.
Rangefinder cameras appear to keep things in focus
The lower-end, consumer roll-film cameras generally used an inexpensive “fixed-focus” lens, so a simple viewfinder was sufficient.
Twin Lens Reflex cameras offer another solution
While the rangefinder type cameras worked well, the camera industry is always evolving. A second method of allowing the photographer to focus and compose appeared in the “Twin-Lens Reflex” cameras. The film winds past the lower lens, while the photographer can focus through the upper lens. The twin-lens cameras were fairly bulky, so designers added a mirror and ground glass to the top of the camera, hence the term “reflex.
SLRs take cameras another step forward
In a camera, the lower mirror is placed at a 45 degree angle directly behind the lens. Once the instant return mirror was perfected, photographers could once again design their images by looking through the lens. Unlike the twin lens reflex, this new breed of camera needed only one lens to focus and shoot with Single-Lens Reflex Cameras.
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