So you bought yourself a SLR camera. What now? You obviously need more lenses.
To find out which lenses to suit your specific use is not always easy. There are several abbreviations and specifications you need to find out, and things are not better by the fact that different manufacturers use completely different abbreviations for exactly the same properties.
Below I take a review of the important features you can find on a lens, and how the different manufacturers label them.
Please note that some specs may be slightly simplified to make the article shorter and more readable. For example, the EC designation marked on Canon lenses indicates that it has an autofocus (Electronic Focus), but also indicates which frame the lens uses.
Read the article by Morris Scjomin
