best camera lens buy image
Raquel
I don't have enough knowledge about camera lens. I just bought a new canon camera EOS 50D. I am also planning to buy zoom lens but I have no idea what is the best lens for EOS 50D. Your recommendation is highly appreciated. Thank you.
Answer
For the 50D you will need a 'good' lens if you want excellent image quality. A cheap telephoto lens is not a good idea for a camera like this, so don't even think about getting a budget one that only costs a couple of hundred dollars or so, because it won't deliver on image quality and will not be good enough for lower lighting. One with a wider (faster) aperture of f/2.8 is an excellent choice.
From the Canon lens/camera review site below (of the 50D)...
"Because the quality of the lens makes a big difference in the image quality delivered by a DSLR - especially one with the resolution of the 50D, I recommend buying (now or later), one of the better Canon general purpose lenses available. At this review date, the Canon EF-S 17-55mm f/2.8 IS USM Lens is my most-recommended 1.6x lens with the Canon EF 24-105mm f/4 L IS USM Lens and the Canon EF 24-70mm f/2.8 L USM Lens being excellent alternatives."
Another excellent lens with a longer starting focal length is the EF 70-200mm f/2.8 L, with or without IS or the f/4 version with or without IS.
Check out the links below for reviews of all the lenses above (and the 50D) and other lenses...
For the 50D you will need a 'good' lens if you want excellent image quality. A cheap telephoto lens is not a good idea for a camera like this, so don't even think about getting a budget one that only costs a couple of hundred dollars or so, because it won't deliver on image quality and will not be good enough for lower lighting. One with a wider (faster) aperture of f/2.8 is an excellent choice.
From the Canon lens/camera review site below (of the 50D)...
"Because the quality of the lens makes a big difference in the image quality delivered by a DSLR - especially one with the resolution of the 50D, I recommend buying (now or later), one of the better Canon general purpose lenses available. At this review date, the Canon EF-S 17-55mm f/2.8 IS USM Lens is my most-recommended 1.6x lens with the Canon EF 24-105mm f/4 L IS USM Lens and the Canon EF 24-70mm f/2.8 L USM Lens being excellent alternatives."
Another excellent lens with a longer starting focal length is the EF 70-200mm f/2.8 L, with or without IS or the f/4 version with or without IS.
Check out the links below for reviews of all the lenses above (and the 50D) and other lenses...
What does it mean when a camera lens has a fixed aperture?
Danny
I'm looking into buying a bigger camera lens, and I keep on seeing lenses that have a fixed aperture and some that don't. What does that even mean?
Answer
First you need to understand what aperture is: It is the ratio of the length of the lens to the diameter of the lens- thus the larger the aperture (the smaller the number, the larger the aperture) the more light will pass through the lens. This means faster shutter times are possible since more light comes through the lens.
Now, in zoom lenses keeping this ration constant, a "Fixed Aperture", requires very specialised engineering which makes the lens more expensive. However such a lens is far better in low light conditions and tends to be much better engineered than one with a variable aperture/ With a variable aperture as you extend the zoom the aperture gets smaller and less light gets through the lens. This means exposure, shutter speeds etc need to change as you change the zoom on the lens- making using the lens more difficult as you have to vary settings more frequently.
First you need to understand what aperture is: It is the ratio of the length of the lens to the diameter of the lens- thus the larger the aperture (the smaller the number, the larger the aperture) the more light will pass through the lens. This means faster shutter times are possible since more light comes through the lens.
Now, in zoom lenses keeping this ration constant, a "Fixed Aperture", requires very specialised engineering which makes the lens more expensive. However such a lens is far better in low light conditions and tends to be much better engineered than one with a variable aperture/ With a variable aperture as you extend the zoom the aperture gets smaller and less light gets through the lens. This means exposure, shutter speeds etc need to change as you change the zoom on the lens- making using the lens more difficult as you have to vary settings more frequently.
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