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View Full Version : Tamron, Canon, or OTHER x-200mm zoom lens



krzkrzkrz
02-04-2007, 12:11 AM
In a future date, I plan on getting a zoom lense with a focal length of at least 200mm.

Just recently, Tamron released the TAmROn AF18-250mm f/3.5-6.3 XR Di-II LD, which seems to be pretty good reviews here.

Together with this lens, I've also considered the Canon 70-200mm f/4 L.

Both lenses, if not mistaken, cost almost within the same price range. Would it be better to save up for the Canon L class lens than to get a third-party lens? Will the IQ (image quality) differ significantly?

cdifoto
02-04-2007, 12:38 AM
Those 18-XXX lenses are slow and crap compared to the 70-200L.

Rontech1
02-04-2007, 07:35 AM
In a future date, I plan on getting a zoom lense with a focal length of at least 200mm.

Just recently, Tamron released the TAmROn AF18-250mm f/3.5-6.3 XR Di-II LD, which seems to be pretty good reviews here.

Together with this lens, I've also considered the Canon 70-200mm f/4 L.

Both lenses, if not mistaken, cost almost within the same price range. Would it be better to save up for the Canon L class lens than to get a third-party lens? Will the IQ (image quality) differ significantly?

I am assuming you are talking of the 70-200 F4 L with IS? IMHO, IS is the deal maker. It is surprising how that can save the shot in difficult situations, especially with the constant F4 of the L lens.
Just my .02,
Ron

cdifoto
02-04-2007, 07:46 AM
I am assuming you are talking of the 70-200 F4 L with IS? IMHO, IS is the deal maker. It is surprising how that can save the shot in difficult situations, especially with the constant F4 of the L lens.
Just my .02,
Ron

Why would you assume he means the IS version? The IS version and those third party jack-of-all-trades master-of-none lenses aren't even close to the same price range.

Not that it matters...the non IS L or the IS L will blow away those others. With ultrazoom lenses you pay for convenience and convenience only. You don't get speed of aperture or speed of autofocus. You do not get quality of image or quality of build either.

TenD
02-04-2007, 08:04 AM
Those two lenses shouldn't even be mentioned in the same sentence. The 70-200 f/4L is a superior lens in every way.

DonSchap
02-04-2007, 12:47 PM
Let's all agree on something important here:

The 18-200mm lens is a "class" of lens. It's aperture is varying from f/3.5 to 6.3, as you zoom. It works nothing like ...

The 70-200mm f/4 lens. This class is a constant aperture lens and is designed not to change shape as you zoom. It is effectively a sealed zoom. Also, the 70-200mm is a professional and prosumer lens design, not a consumer lens.



The optical quality between these lenses is a tough call, because their classes are so different. Comparing them side-by-side ... just seems wrong. Comparing lens of the SAME class, made by different or even the same manufacturer is more worthy of reasonable discussion.

The 18-200mm was to be an all-in-one design, which compromises a few aspects in order to offer a one-lens-solution for the one-the-go type of scenario. If you are going to have two lens, the best selection would be more like a 17-50mm f/2.8 class lens & the 70-200mm f/2.8 or f/4 lens, together. Split the range to get the sharpest performance from each.

Starting out, though ... for $379, the 18-200mm is the bargain. :cool: When upgrade time comes ... keep it in reserve.

forno
02-04-2007, 01:52 PM
6.3 as your quickest aperture when zoomed at 200 is, pretty much useless on anything but a bright sunny day unless you are on a tripod

DonSchap
02-04-2007, 02:30 PM
6.3 as your quickest aperture when zoomed at 200 is, pretty much useless on anything but a bright sunny day unless you are on a tripod

Agreed, the 18-200mm is a terrific "tear-around-town" lens for the summer, and try to remember ... not ALL of your shots are taken at 200mm, usually just the outdoor stuff.

Zooming between 18mm - 50mm on the 18-200mm lens, your max aperture ranges from f/3.5-4.5

That's not all that shabby! :D It's a good "working range" and a definite improvement over the "kit" lens.

At 70mm: you're at f/5

At 100mm: you are at f/5.6

And just to be thorough, breakover to f//6.3 occurs at 140mm, according to the telephoto range gauge on the lens.