Lenses In Optics
All of the issues with elevated digital camera shake that apply to multipliers also apply to extension tubes. Compared to a 'regular' 50mm lens, a telephoto has a narrower angle of view. It additionally seems to compress distant issues, and there may be much less depth of area. A good telephoto lens is a vital part of any nature photographer's equipment, and studying the way to use one is a vital talent.
The time period is beneficial because most photographers experienced with interchangeable lenses are most familiar with the 35 mm film format. If you need to use a telephoto on a subject that's too near concentrate on, you'll be able to add a number of extension tubes. This permits it to focus nearer, however you can't give attention to distant objects with the extender in place.
Be conscious that a great 400mm lens will cost over $1,000 and that the 600mm lenses price around $10,000. However, as a photographer, I would recommend you to spend money on a 50mm prime lens, as you can do much more than just blur the background with it.
Because of their ability to magnify, these lenses are unforgiving of poor photographic habits. The magnification given by a telephoto can easily be approximated. This final number is critical because it's also the magnification of most binoculars.
Moving on, a 600mm lens magnifies 12x, 800mm 16x, and 1000mm 20x. The various camera manufacturers all construct 600mm lenses; at least one builds a 1250 mm lens, and many make 1000mm 'cat' or mirror lenses.