I want to know, how much zoom does this give? like 10X-12X etc. I am a novice in cameras and I dont understand the focal length terms.
2006-10-15 13:33:11 · 6 answers · asked by som 1 in Consumer Electronics ➔ Cameras
Well firstly, the EF-S 18-55mm sounds like the kit lens that comes with the Canon 350D (digital Rebel) and the new 400 XTi (Rebel Digital XTi).
These lenses are nothing like your digicam lenses.
An 18-55mm Canon lens has a focal length of 28-90mm...so you could say it has only a "zoom" of 1.6X
And I think Nikon lenses are 1.5X
Whereas a digicam with a 12X optical zoom, would have a focal length in the range of about 36-432mm.
So, for you to get anywhere the focal length of 10X with an SLR lens...you are seriously looking at big bucks.
P.S. the kit lens is not the best...thats why Canon almost 'give it to you'.
I have included a couple of links for you below...which might help explain it all much better than I am trying to do.
2006-10-15 14:16:29 · answer #1 · answered by Petra_au 7 · 0⤊ 0⤋
The kit lens that comes with the Digital Rebel XT isn't so good. It's better to buy the camera as the body only and get a good lens seperately. Consider this as an alternative:
http://www.usa.canon.com/consumer/controller?act=ModelDetailAct&fcategoryid=149&modelid=10511
For a little bit more money you get a high quality lens with a more useful focal range and includes image stabilization (Canon puts image stabilization on their lenses, not their cameras and not all lenses have this). That's what the IS means in the name of the lens, BTW.
2006-10-15 14:16:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The first set of numbers refers to the focal length of the lens. A 50-mm focal length makes things appear as they do to your eye. A shorter focal is called "wide-angle" --- good for use in a small room or on a boat. The zoom ratio is just the largest focal length divided by the smallest one --- about 3X in your example. A focal length much more than 50-mm is called "telephoto" --- perhaps 85-mm to more than 400-mm. A zoom ratio in the neighborhood 10X-12X will be much more expensive. The second set of figures (f/3.5-5.6) refers to the size of opening your diaphragm is capable. It is determined by the focal length of the lens divided by the size of opening. 18mm/3.5mm = 5.14 -- about 1/5 th the focal length. Smaller f-stops admit more light.
2006-10-15 14:24:26 · answer #3 · answered by Scoop81 3 · 0⤊ 0⤋
simple answer: 3x optical (from that lens)
Is good enough for "family photos".
What I recommend to you: EF 17-85 IS USM + Rebel XTi (or XT).
That lens is not a cheap one - will cost you as much as the camera Canon Rebel XT or XTi (body only) but is a good lens.
For more details look at :
http://canon.ca/english/index-products.asp?lng=en&gid=2&sgid=7
2006-10-15 14:52:26 · answer #4 · answered by dand370 3 · 0⤊ 1⤋
Yes. Any Canon lens in the EF and EF-S ranges will fit the Rebel xTi.
2016-03-18 10:05:27 · answer #5 · answered by ? 4 · 0⤊ 0⤋
divide the longer length by the shorter one - so you get about a 3x zoom.
this is all relative, though. keep in mind that this lens gives more of a wide angle than most point and shoot lenses. basically, it's good for wide shots and normal shots, not so good for long telephoto shots.
2006-10-15 13:57:06 · answer #6 · answered by lazy_magnet 2 · 0⤊ 0⤋