| Author | Thread |
|
|
01/08/2006 12:05:06 PM · #1 |
| i was just wondering what the equivilent lens on a dSLR would be when compared to the ''10x'' optical zoom on my 5100? im starting to look at dSLRs and want to know how the kit lens (namely 18-55mm) will compare (if i was to save up for a dSLR i wouldnt be able to afford new/second hand lenses for a while). i know it wont have the same zoom range but what about the widest angle setting? im finding that with my 5100 even at the widest setting its not enough for my liking. any help would be greatly appreciated- many thanks. |
|
|
|
01/08/2006 12:22:44 PM · #2 |
your 5100 has a lens equivalent to a 37-370mm.
the 18-55mm is equivalent to a 29-88mm.
the wide setting would be wider, but your zoom would not reach nearly as far. |
|
|
|
01/08/2006 01:47:15 PM · #3 |
I think what you mean is what power or X does the MM convert to ? I think it's around 1X for every 50 mm so my 500 mm is like 10X zoom except when I put it on my Canon which actually multiplies the lens by 1.6 so then my 500 mm is increased to 800 mm which would be like 16X zoom. Is this what you wanted to know ?
|
|
|
|
01/08/2006 01:51:47 PM · #4 |
Originally posted by Pioneer:
I think what you mean is what power or X does the MM convert to ? I think it's around 1X for every 50 mm so my 500 mm is like 10X zoom except when I put it on my Canon which actually multiplies the lens by 1.6 so then my 500 mm is increased to 800 mm which would be like 16X zoom. Is this what you wanted to know ? |
this always confuses, me why would anybody think of it this way? The PS has no relation to this system, so why would it make sense for a PS user to think this way? Maybe i just don't think about it the same way *confused* |
|
|
|
01/08/2006 01:59:40 PM · #5 |
Originally posted by feetstink:
your 5100 has a lens equivalent to a 37-370mm.
the 18-55mm is equivalent to a 29-88mm.
the wide setting would be wider, but your zoom would not reach nearly as far. |
thats exactly what i wanted to know- thanks for your help.
kyebosh- i just wanted to get an idea of the zoom range on the kit lens as i have no experience with SLR's (and consequently lenses) :)
thankyou for your replies- they have been most helpful |
|
|
|
01/08/2006 02:01:44 PM · #6 |
The "Zoom Factors" are confusing. They are confusing because they try to give a buyer one number to describe the zoom range. Not gonna happen.
In short, ignore the "10x" or whatever, and look at the focal lengths printed on the lens. In the case of the Fuji 5100, that's 5.7-57mm. You can see where the 10x comes from, since 57/5.7 is 10, the "long" end of the zoom is 10 times the focal length of the short end. Still, unless you know where the zoon range starts, you have no idea what range is covered.
To equate to 35mm terms, you need to know the sensor size, or look the equivalent numbers up on any good review site. In the case of the 5100, those numbers are 37-370mm. Now you know what range it covers in familiar 35mm terms. It covers from very moderate wide angle to pretty long telephoto.
|
|
|
|
01/08/2006 02:04:46 PM · #7 |
The zoom factor is easy to figure, just divide the long end of the zoom by the short end.
For example, the 35-350L: 350/35=10x or the 16-35L: 35/16=2.18x
Its all an arbitrary rating, thats why a 1x on brandA might be 28mm while on brandB it might be 32mm, etc.
|
|
|
|
01/08/2006 02:20:35 PM · #8 |
| Keep in mind that if you're not happy with the range the kit lens provides you, you can get something else. You can buy the camera body only and then get whatever lens you would like to start out with. This could raise the initial cost a bit, if you want a better lens, but getting something versatile to start off with will keep you happier longer. |
|
|
|
01/08/2006 04:43:50 PM · #9 |
See Kirbic's and Count's posts above for the correct explanation of how to work out the ?x zoom factor on SLR lenses. But as has been pointed out, it only gives you how wide the range is, not what type of range it is.
A 28-90 mm lens and a 70-210 mm lens could both be called "3x zooms", but they'll give very different results - one is slightly wide to slightly telephoto, the other is slightly telephoto to moderately telephoto.
The other thing to remember is that a wider range usually means a loss in lens quality - the image quality on a 10x zoom will not be as good as on a 3x zoom, let alone a prime (non-zoom) lens. My 28-200 lens is very convenient for travelling light, but I've noticed the photos are not quite as sharp as those taken with other lenses. If image quality is important to you, then it's better to spend less on the camera and more on the lens/es.
Message edited by author 2006-01-08 16:46:17. |
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 03/12/2025 02:30:58 AM EDT.
