fallingeese
Posts: 2031
Joined: Sat Apr 28, 2001 2:33 pm

Camera Lens

Mon Nov 26, 2001 6:21 am

I was wondering what the difference between a...

38-135mm zoom

and a

28-100mm zoom.

Both are 3.6x zoom. What is the difference and which is better for shooting from a distance.

Thanks in Advance.
Mark McWhirter...Contrails Photography
 
wietse
Posts: 3630
Joined: Thu Oct 18, 2001 12:49 am

RE: Camera Lens

Mon Nov 26, 2001 6:30 am

Both are 3,6x zoom, yet one is 135mm, and the other is 100mm?? Sounds pretty strange to me, am I missing a point here, anyone?

Wietse/AMS
Wietse de Graaf
 
EGGD
Posts: 11880
Joined: Sat Feb 24, 2001 12:01 am

RE: Camera Lens

Mon Nov 26, 2001 6:42 am

Sounds like digital to me.

Neither are good for long range shooting.

This is close up stuff.

Regards

Dan
 
PUnmuth@VIE
Posts: 3119
Joined: Thu Aug 24, 2000 9:31 pm

RE: Camera Lens

Mon Nov 26, 2001 6:45 am

Hi!
135/38=3,55 ~ 3,6
100/28=3,57 ~ 3,6
Thats simply the ratio between higher and lower value. Doesnt neccessarily have to be a digital.
Peter
-
 
wietse
Posts: 3630
Joined: Thu Oct 18, 2001 12:49 am

RE: Camera Lens

Mon Nov 26, 2001 6:47 am

ooooooow, wait... 3,6 indicates the zoomRANGE of the lense and not the times it magnifies real life?

Wietse/AMS
Wietse de Graaf
 
fallingeese
Posts: 2031
Joined: Sat Apr 28, 2001 2:33 pm

RE: Camera Lens

Mon Nov 26, 2001 6:49 am

Yes I am aware that neither are any good for lond range shooting. But both are advertised as 3.6x zoom. They aren't digital either. They are 35mm cameras. Basically point and shoot variety.

28-100mm wide angle zoom lens
and
38-135mm power zoom lens

If you have any other questions ask. But, back to the question. What is the reason behind the different numbers if in the end you have a 3.6x zoom?
Mark McWhirter...Contrails Photography
 
fallingeese
Posts: 2031
Joined: Sat Apr 28, 2001 2:33 pm

RE: Camera Lens

Mon Nov 26, 2001 6:50 am

Thanks Peter you beat me to it. So the ratio is the same but what is the reason behind the different numbers?
Mark McWhirter...Contrails Photography
 
Skymonster
Posts: 3428
Joined: Fri Oct 12, 2001 7:53 pm

RE: Camera Lens

Mon Nov 26, 2001 6:55 am

A human eye sees the equivalent of around about 50mm - not an exact number, but not too far off (actually its nearer 55mm, but what the heck!).

A lens with anything less than 50mm gives a wider view than the human eye sees, anything more than 50mm gives a zoomed in or "closer" view in the resulting photo.

So, a 28-100 gives a full frame image from almost twice as wide as the view an eye takes in at 28mm, to half of what it takes in (i.e. the centre half of what you see with your eyes will fill the frame) at 100mm. A 38-135 lens doesn't take in such a wide view at the 38mm end and zooms in closer at the top end than a 100mm lens.

Wide angles (anything below 50mm) are good for static airplanes at airshows and not much else, 50mm exactly is the classic side-on ramp shot lens, but for decent pics at airports where you're away from the action the longer the better, although neither 100mm nor 135mm is likely to be long enough to shoot from the average location at an average airport - these need 200mm plus at least.
There are old pilots and there are bold pilots, but there are no old bold pilots
 
fallingeese
Posts: 2031
Joined: Sat Apr 28, 2001 2:33 pm

RE: Camera Lens

Mon Nov 26, 2001 7:12 am

Thanks alot Skymonster. I'd usually use my camera for as you said static displays though at a couple of my spotting locations a 3x zoom would cut it as the places are on final approach and on the taxiway.
Mark McWhirter...Contrails Photography
 
Skymonster
Posts: 3428
Joined: Fri Oct 12, 2001 7:53 pm

RE: Camera Lens

Mon Nov 26, 2001 7:39 am

Fallingeese,

Put it another way... You already know that the 3.5x zoom means that you'll see something pretty wide at the small number end, and the center third or so at the other end. 28mm is wider than 35mm, so at the wide end you'll get more in with 28 than 35, but at the long end you'll be able to get in closer with 135 than you will with 100.

You pays your money...

Andy
There are old pilots and there are bold pilots, but there are no old bold pilots

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