Learn aboutLens availability |
Snapsort provides the approximate number of lenses available for each brand of SLR. This includes lenses made by third parties, for example Sigma makes lenses that are compatible with Nikon DSLRs. This can be an important factor when buying a DSLR. People often own SLRs for many years, and as they improve their photography skills and knowledge they may find themselves limited by the kit lens, and start buying additional lenses. Snapsort does not include lenses that you can use with an adaptor in its counts, so often you can make use of more lenses than stated if you buy an extra adaptor.
Here are a few types of specialized lenses you can buy for DSLRs.
Wide-angle lenses, e.g. 24mm or lower, add an interesting perspective and let you capture huge scenes and/or great shots in tight spaces.
This photograph demonstrates the effect of a very wide-angle lens (14mm), while capturing a huge amount of the scene it also distorts, more so at the edges, taken with a Nikon D700 DSLR. Photography by realSMILEY via Flickr. f/5.6, 1/50s, ISO 200, 14mm.
Telephoto lenses, e.g. 85mm or longer, let you get close-up shots of subjects far away from you, and are create flattering portraits of people.
Using a telephoto lens can get your close to the action without putting yourself at risk, this shot was taken (in a zoo!) at 500mm with a Canon 5D Mark II DSLR. Photography by Todd Ryburn via Flickr. f/4, 1/400s, ISO 1600, 500mm.
Wide-aperture lenses, e.g. f/2.8 or wider, capture a lot of light letting you get natural light shots you couldn't otherwise get, and have a narrow depth of field to blur the background (bokeh).
Here you can see only some of the leaves are in focus due to the narrow depth of field achieved with a f/1.2 lens using a Nikon D40 DSLR. Photography by jorritf via Flickr. f/1.2, 1/640s, ISO 200, 50mm.
Macro lenses enable you to focus very very close to a subject, great for photographing details such as leaves on flowers or small insects
Here we small details made large using a macro lens which can focus very close to the ants, taken with a Canon EOS 350D DSLR. Photography by linh.ngan via Flickr. f/4, 1/800s, ISO 100, 40mm.
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I had not seen lenshero. That's a nice site. Thanks. Not quite as mature as Snapsort (I ran into a few errors in the first couple minutes of use), but still very useful. You may be interested in Dyxum as well -- it's a very similar site, but specific to Sony a-mount; it's more comprehensive, but not as well organized. It might give you some ideas.
On an unrelated note, the site also seems to over-weigh camera popularity, and not capture either ergonomics or ultimate image quality at all (better image processing algorithms are probably the primary reason Canon cameras are as good as they are relative to the competition).
Have you seen our sister site http://lenshero.com? We might integrate the two sites further, giving Snapsort more specific information on types and prices of lenses available for each system!
1) All lenses are stabilised. This substantially reduces the need for overlap in lenses. Canon makes a number of lenses in IS and non-IS versions. This makes no sense in a Sony or Pentax. This is not an advantage for Canon or Nikon, but your metric makes it into one.
2) I can get lenses for Sony and Pentax where I cannot have similar functionality for Canon or Nikon at any price. I do most of my shooting in low light, so I use fast prime lenses (mostly, an older Maxxum 50mm f/1.7). This gives me a high ISO sensor, fast lens, and image stabilization in one, cheap package. Neither Canon nor Nikon made any fast (f/1.8 or better) IS lenses until you get into telephoto. On Sony or Pentax, I can do f/1.4 or f/1.2 IS at any lens length. I cannot overemphasize how much of a win this is for the type of work I do.
Second of all, what matters is lens selection, which doesn't really come down to number of lenses. Sigma makes 4 superzoom lenses. Tamron makes 3. All of the major manufacturers make at least one. It makes little difference whether there are 10 superzooms for a mount, or just 1, so long as there is at least one good, reasonably priced model. Something major missing (such as Pentax's lack of a cheap 50mm) hurts. This should be weighed in some way. In the same way, not much of your reader base cares about the availability of Sigma's 200-500mm f/2.8 monster for $26k, and if they do, they'll buy a camera body to go with it. The key question is about having a good spread of available consumer-priced lenses, not just raw numbers.
Third of all, used lens availability and price matters a lot. Canon and Nikon have good availability, but high prices. Old Minolta lenses for Sony are very nice and extremely affordable, and easily found on eBay, but less easily found in stores or Craigslist. I have not looked at the others, but I would guess many of the declining brands will have great availability.