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Originally Posted by chews89 /img/forum/go_quote.gif
Thanks for the help guys.
Yeah it seems the 50mm f1.8 is an incredibly popular lens, and so affordable too! I'll definitely have to get myself one of them.
To be honest I'm still having difficulty with understanding focal lengths and such. For example what will be the difference between a 55-200mm and 18-200mm? I guess I have to do more reading but if someone could give me a simple answer, that would be awesome.
Also, I've just realised VR lenses are a lot more expensive than non-VR lenses. Does VR make a huge difference? Is it still Ok to go with the non-VRs?
Ohyeah I have a feeling I'll mainly be shooting portraits and some scenery.
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Focal length is a funny thing, but basically the number translates into the field of view you get.
A wide angle lens, with a small focal length (~20mm, 94º), will have a wide field of view, let you get many things in the shot.
Ex:
A telephoto lens, with a large focal length (~200mm, 12º), will have a very small field of view and let you 'zoom in' on the subject.
Ex:
And of course, things in between are in between these extremes.
Basically, think of it in terms of field of view. Doing a google search or video search for camera focal length should give you a better idea.
So, a 18-200mm covers a range from wide angle to telephoto. The 55-200mm covers less of a range, say... normal to telephoto.
VR can help. You'll need to decide if you want it. Read up on what it does and when it helps.
Portrait and scenery are tough to say. Take portraits for example. Some people would use a wide angle lens, while others would want a telephoto lens. It's up to personal preference. For portraits you usually want a sharp lens that has good bokeh control.
For scenery shots, if you are talking landscape stuff, you're looking at wide angle lenses mainly. If you are talking closeups of flowers, you will want a lens that can zoom in and give you a good magnification.