JDT said:
Then, for the night time shots I need a '50 mm f/1.8' lense?
B.T.W: What does 50 mm f/1.8 mean?
Thanks in advance
That "f" value refers to the size of the aperture (ie: "hole" in the lens) that lets in the light. It's a ratio between the focal length (eg: 50 mm) and the diameter of the hole. Lower numbers are better, so an f/1.4 lets in more light than an f/1.8.
And just for your information, an f/1.4 lens will let in 2x more light than an f/2 lens.
An f/2 lens will let in 2x more light than an f/2.8 lens; and an f/1.4 lens will let in 4x more than an f/2.8 lens.
An f/2.8 lens will let in 2x more light than an f/4 lens; an f/1.8 lens will let in 4x more light than an f/4 lens; and an f/1.4 lens will let in 8x more light than an f/4 lens.
Here's an easier way to explain it.
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In order: f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11, etc. Each lens after f/1 will let in
half the amount of light as the previous aperture on the list. So I suggest a 50 mm f/1.4 lens if you want to shoot a lot of photos at night, although a 50 mm f/1.8 is ok as well. Just remember that if you need to take a photo at 1/4th seconds using the 50 mm f/1.8, you'd only need 1/10th seconds with the 50 mm f/1.4 lens, which could be the difference between a blurry shot and one that's sharp enough to use.
(these aperture sizes are adjustable, so you can make the aperture smaller if you wish (ie: you can make that f-number larger). The number on the lens is just the maximum aperture size)
oldpismo said:
I'm not doubting that it is a good lens. What I was saying is that if you are getting an SLR for the first time, the kit lens is so much better than the compact digital lens that you have been using in the past that it is fine.
Actually, that's not entirely true.
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Some of these fancy point and shoot cameras have excellent lenses that are likely better than the Canon kit lens, and sometimes the Nikon D50 kit lens.
You're really going to get decent shots using the kit lens in most lighting. The differences between a good lens and a bad lens isn't that high if you're not completely anal about details and are just starting out. So if anything, get the kit lens and a 50 mm f/1.4.
Good luck, man. Ask more questions if you need to.
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