Interchangeable lens for 35mm SLR cameras

Interchangeable lens for 35mm SLR cameras

With the invention of Single-Lens-Reflex Camera (SLR) there were a lot of advantages that were possible to photographers with SLR then with any of the cameras that were invented and in use before. One of the greatest advantages was the fact that the new SLR cameras came with interchangeable lenses. A photographer had a choice of choosing a specific lens for a specific type of photo. For long range shot they would use a telephoto lens that would allow them to magnify and zoom in closely onto a specific object without walking far to take a picture of is. Wide landscape shots were taken with wide angle lenses, and studios and portraits salons used prime lenses with low aperture. These interchangeable lenses have gone a lord way since they were first invented.

 

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Image Source: http://www.heritagecameras.co.uk/t2-lens-mount-t-mount-for-alpa-bayonet-swiss-35mm-slr-cameras-9d-11el-11si-etc-2893-p.asp

 

 

There are a lot of key differences that can be greatly noticed in lenses today and lenses in 1980’s. One of the key differences is that lenses today are very computerizes and automized. There is a sensor for everything inside the lens. Almost all the lenses today have a feature called “Auto-Focus” which allows the user to preset the focus point and the lens is adjusted back and forth until that point is in focus. That feature was not present at the first interchangeable lenses that came out for SLR cameras. The focus ring on those lenses had to be manually adjusted by hand, while looking inside the viewfinder to make sure that the subject of the photo is still in focus. Another amazing feature that was added to the news lenses is the Image Stabilization, or Vibration Resistance which creates good pictures even if the camera is moving or vibrating a lot.

 

 



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Another main thing that change between the first interchangeable lenses is the physical assembly of the lens, and the material that it is made of. Fist interchangeable lenses were made out of plastic and were easy to break id not handles properly. A lot of the expensive lenses today like the “L-series” Canon lenses are often times made out of metal to withstand the constant and heavy use by a photographer. Another thing that changed since interchangeable lenses came out is the quality of the resulting picture. As time went on, engineers were able to develop more and more complex technology which allows for a low aperture, high Depth of Field which results in not blurry pictures even with low light conditions. Finally with all of the improvements made to the lenses there is a major growth in the number of different lenses. Back in 1980’s when SLR’s just came out there was a few different lenses that could be used on camera. Today there is over 100 different lenses for every type of occasions and event.