Showing posts with label af. Show all posts
Showing posts with label af. Show all posts

Tuesday, March 2, 2010

Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras

Review Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras


Buy Cheap Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras From Here Now!

18-250mm f/3.5-6.3 Di II LD Aspherical (IF) Macro Tamron zoom lens with 35mm equivalent of 28-388mm * compatible only with Canon digital SLR cameras with APS-C (24mm x 16mm or smaller) image sensors -- not compatible with the Canon EOS 5D * advanced optical design with low-dispersion and hybrid aspherical glass elements for superior image quality * internal focusing * zoom lock mechanism to prevent unwanted barrel extension when carrying lens/camera combination * minimum focus distance: 17.7 in. * attachment/filter size: 62mm *
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Technical Details

- 18-250mm zoom lens with f/3.5-6.3 maximum aperture for Canon digital SLR cameras
- Offers telephoto capabilities of 28-388mm (35mm equivalent) in a single compact housing
- Low-dispersion (LD) glass eliminates chromatic aberration and sharpens ultra-long shots
- Maximum magnification ratio of 1:3.5 for macro shots; minimizes ghosting and flare
- Measures 2.9 inches in diameter and 3.3 inches long; weighs 15.2 ounces
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Customer Buzz
 "All-in-one zoom lens." 2010-01-24
By caldwin (Nashville, TN USA)
I have a Canon Rebel XTi digital camera and also a Sony DSC-H7

with a 15X optical zoom. For travel pictures I have always used

the Sony because it didn't require all the extra lenses. This

Tamron lens gives me the zoom range I need (14X) with the Canon

without having to take along a lot of other lenses.





[[ASIN:B000IBLMHQ Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical

(IF) Macro Zoom Lens for Canon Digital SLR Cameras]]

Customer Buzz
 "Depends what you are looking for..." 2010-01-04
By Jephu (NJ, USA)
Is this a good lens? Yes. Is it right for you? It depends.



If you plan to do a fair amount of *outdoor* travel and want to zoom without swapping lenses, this lens is probably right for you. Why?

- This lens is much lighter than lenses with VR/OS (vibration reduction/optical zoom). If most of your shooting is outdoors, then you probably need a light lens more than you need VR/OS.

- The photo quality is good when zooming, as long as you have enough light to use a high shutter speed.

- I've found the focus to be relatively fast and quiet, which is nice when you are taking photos on the go.

- This lens is really dropping in price, so you'll save some bucks while still getting a good quality lens.



If you plan to shoot indoors or want to take the best pictures possible, this is probably not the best lens for you. Why?

- If you are traveling and want to take pictures indoors, consider going for a lens with an f stop of 1.8 or lower or at least getting a lens with VR/OS. The f stop only goes down 3.5 on this lens, and gets higher when you start to zoom.

- If you want to take the best picture possible and you are traveling and don't care about the weight, get a lens with VR/OS. This will help take clear picture when you zoom or are dealing with overcast.

- If you are not traveling and have all the time in the world, why not get a nice 50-200 zoom and just swap it in as necessary. You can get one that is a better quality and cheeper than this lens.



Hope that helps!





Customer Buzz
 "Great Lens, Super Convenient, A Little Slow" 2009-11-23
By D. Patterson (Northfield, MN United States)
I love this lens, it was a Christmas gift last year. My only complaint is that my batteries SEEM to drain a little faster with it, and it focuses and takes photos a little slower than the original 18-55 lens. I also have a 75-300 lens. This lens is the best for general use, since I never have to switch anything or carry anything extra. I am not a professional, just an amateur that takes thousands of photos a year. With two little kids in tow, the convenience and versatility of this lens cannot be beat!

Customer Buzz
 "Some trade-offs, but overall a good all-in-one lens" 2009-10-02
By DRC (Austin, TX United States)
In the 18-55mm range, I find that this lens mostly performs like the Canon EF-S 18-55mm that came with my Digital Rebel kit. It definitely has compromises, though, which were necessary to get the 13.8x zoom range into a single lens. The Tamron 18-250mm vignettes generally on f/4 and wider when you're at the wide angle end of the zoom range. The vignetting can be compensated for in Photoshop, but it becomes worse when a filter is attached. I have to be really careful if I use a polarizer to keep the aperture narrower than f/4. The sharpness at the far end of the telephoto range isn't the best, either. This article goes into that in some detail, comparing it to a Canon professional telephoto lens:



[...]

Generally, they're comparable at the center of the image, but the Tamron sharpness falls off significantly toward the corners when used at the telephoto end of the zoom range. This matches my observations.



As with all non-stabilized telephoto lenses, you really need a fast shutter speed to overcome camera shake at the far end of the telephoto range. I find that 1/320s or faster is generally adequate with this lens, but due to the narrow aperture requirement (f/6.3) at 250mm, it means that you really need a lot of light to take an effective telephoto shot at ISO 100. Since I take mostly landscapes, that's not normally an issue. If I were more into wildlife or people photography, however, it definitely would be.



[...]



I compared it specifically with this review of the EF-S 18-55 to convince myself that I wouldn't be losing any quality or functionality at the wide angle end of the zoom:

[...]



I'm not sure if I agree with their vignetting tests, though. I personally think the vignetting is worse with the Tamron.



All in all, the Tamron 18-250mm lens is a good travel lens and is an excellent choice for the back country, where weight is a major issue but a 3x zoom just won't capture everything you want. It takes great shots up to about the 150mm range and OK shots beyond this (tripod strongly recommended for 200mm and above.) I've taken great candid portraits and wildlife photos with it, although neither is really this lens' strength. In general, it's not going to give you the same results as a professional lens, but for those who need to travel light, it would be hard to find a better lens for the same weight.



Customer Buzz
 "LOVE IT! LOVE IT! LOVE IT!" 2009-09-10
By Another Shopper (San Diego, CA)
I am so happy with this lens. It is everything I need all in one handy little package. Great for everyday shots at 18mm, then extends to fabulous zoom capability at 250 mm. It is only slightly less a lens than my Canon 300mm, but so much easier to have on my camera.



Images are sharp, crisp and clear. I don't know when I'll need to get another lens!


Images Product

Buy Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras Now
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Sunday, February 21, 2010

Sigma 18-50mm f/3.5-5.6 DC AF Wide Angle Zoom Lens for Canon EOS Digital Rebel XT, XTi, XS, XSi, T1i, 7D, 10D, 20D, 30D, 40D, & 50D Digital SLR Cameras

Review Sigma 18-50mm f/3.5-5.6 DC AF Wide Angle Zoom Lens for Canon EOS Digital Rebel XT, XTi, XS, XSi, T1i, 7D, 10D, 20D, 30D, 40D, & 50D Digital SLR Cameras


Buy Cheap Sigma 18-50mm f/3.5-5.6 DC AF Wide Angle Zoom Lens for Canon EOS Digital Rebel XT, XTi, XS, XSi, T1i, 7D, 10D, 20D, 30D, 40D, & 50D Digital SLR Cameras From Here Now!

The 18-50mm f/3.5-5.6 DC lens was exclusively designed to suit the characteristics of digital SLR cameras. Ideal as a standard starter zoom lens, this lens provides an equivalent range of approx. 28-80mm when used with a Canon digital SLR camera (*). The use of aspherical lenses provides correction for various aberrations throughout the entire zoom range and produce a high level of optical performance.



DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result these lenses are also more compact and lightweight, and are better matched to digital SLR cameras.



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Technical Details

- Exclusively designed to suit the characteristics of digital SLR cameras.
- Filter Size Diameter: 58mm, Lens Construction: 8 Elements in 8 Groups
- Angle of View: 76.5-31.7 degrees, Minimum Aperture: F22
- Minimum Focusing Distance: 25cm/9.8 in. Maximum Magnification: 1:3.5
- 1 Year Warranty
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Customer Buzz
 "Nice lens for the price" 2010-02-02
By Zachary A. Crosby
I got this lens for my new Canon 7D, as somewhat of a filler lens till I got another one, but for being less than $100 it worked like a charm, even shot a video on it, vignettes on the 50mm side, but what can you ask for for such a cheap lens

Customer Buzz
 "Well worth the cost" 2010-01-21
By J. Rzeczycki (East Tennessee)
For under $100 you will not find a better lens than this. Equal to about 29mm on a Canon crop body dSLR, it is a wide angle lens. This is a very under rated lens in my opinion FOR THIS PRICE. Built well and very sharp at F8.

Customer Buzz
 "Wide Angle: it is not!" 2010-01-08
By S. Cho (LA)
Bought it thinking it would be great wide angle lens, it was not much better than my Canon 18-55mm lens that came with my T1i. If your looking to replace 18-55mm lens, then I would buy this one because the price is unbeatable. As far as construction, I have to give it to Sigma. The feel and weight distribution slightly better than the Canon lens.



In addition, it came with a hood. really nice add-on. If your looking to replace your 55mm lens, this is the one. If you want an extra good lens, this is the one. If you want Wide Angle Shots, not the one.



Overall, I am keeping this lens, just in case, my orginal breaks down.

Customer Buzz
 "Good quailty at low cost" 2009-12-30
By Philip L. Langford (Motor City)
This is the best under 100.00 lens I've purchased. I clicked off a few practice shots with my 40D before wrapping it as a gift for my son. We went out to shoot some cityscapes and the lens performed well. The focus speed is on par with the 10D capabilities. If you need a wide angle zoom and can find this lens...buy it.

Customer Buzz
 "Love it" 2009-09-30
By Robert Osborne (saint clair shores, MI)
Sigma 18-50mm is a great lens for someone looking to save a few bucks or for a novice. All my friends who are die hard slr junkies cant believe the quality it puts out. Its a must have!


Images Product

Buy Sigma 18-50mm f/3.5-5.6 DC AF Wide Angle Zoom Lens for Canon EOS Digital Rebel XT, XTi, XS, XSi, T1i, 7D, 10D, 20D, 30D, 40D, & 50D Digital SLR Cameras Now
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