Showing posts with label canon ef. Show all posts
Showing posts with label canon ef. Show all posts

Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras Review

Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras
Average Reviews:

(More customer reviews)
I love taking photos, but I hate carrying lots of equipment when photography is not the focus of my journey, so I looked to find a lens that was light, inexpensive, a useful focal range and decent sharpness given all of the above. I believe the Tamron fits the bill.
Although this lens will not win any points with 'L'-series purists, I found it to be a very useful - and lightweight - lens. Sure, it's slow... Sure - it has a plastic mount... Sure - it's not as sharp as a lot of lenses with smaller zoom ranges and bigger price tags... But for most people who aren't looking for poster-sized enlargements, a lens that won't break your shoulder or your bank account like the Tamron is a good fit. I have used this lens for a few weeks now, and have compared the results to the excellent Tamron 28-75 2.8 XR Di, the Canon 50mm 1.8 (the 'plastic fantastic'), and the kit lens. It does lack the tack-sharpness of the 50mm and the 28-75, but it is still very acceptable. The reach is what will 'wow' you about the lens. Outdoors in decent light you can really pull your subject up close. In a photo taken from the 6th story of a beach hotel, I was able to clearly read a standard beach umbrella-rental sign that was approx. 500 yards away.
Indoors, this lens is just too slow to be useful at full zoom, but does reasonably well between 28-100mm with built-in flash (just be sure to remove the lens hood or it will shadow the lower part of the frame) and even better with an external flash (I use the EX550).
The focus is quick and quiet in decent lighting, but it will hunt in darker scenes.
In short, if you want a lens that offers reasonable sharpness, an incredible focal range, lightness and compactness at an attractive price, then consider this lens. You may find, as I did, that it will let you take that long lens with you instead of leaving your gear behind... I would much rather have a picture that may not be 'as sharp' than the one I did not take because I left the two pound lens behind.

Click Here to see more reviews about: Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras

Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras

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Canon EF 180mm f3.5L Macro USM AutoFocus Telephoto Lens for Canon SLR Cameras Review

Canon EF 180mm f3.5L Macro USM AutoFocus Telephoto Lens for Canon SLR Cameras
Average Reviews:

(More customer reviews)
May I introduce you to one of the least know and yet most superb lenses Canon makes. You probably even stumbled on to this page by accident, looking for another Canon lens, looking at various macros, or even just intrigued by this higher-priced lens you've probably never even considered.
Let me just say this about this lens: Ultra sharp. Ultra colorful. Ultra contrast. Ultra solid.
Like everybody else, I initially bought this lens for its macro. The 60mm and 100mm options were a lot cheaper, but my collection is entirely L-class and I'd learned to trust putting gobs of money into the lenses with the red ring. So I put my money where my L-faith is and went with this lens. Needless to say, my faith was rewarded again.
Yeah, sure it's got the 1.0x macro capability, and this is important. But what I wasn't expecting was the image quality. It is unbelievably good. Now I'm not somebody who's taking his first trip into L land and comparing this lens to the $300 run-of-the-mill glass. I've used six L-class lenses significantly and I'm comparing this lens' image quality to THOSE.
You will find yourself using this lens as much as its 180mm focal length and f/3.5 aperture dictates. The lens is versatile both as a super-fine telephoto and as a 1.0x macro.
The macro capability is the main feature. 1.0x macro literally means that a 35mm wide object will completely fill a 35mm frame. Basically, it's a small microscope. If you dare to dial in the aperture to the wide-open f/3.5, the DOF is approximately that of the thickness of two sheets of writing paper at 1.0x. Needless to say, you'll need a tripod, preferably with macro rails that slide forwards and rearwards for ultimate control.
(For those of you new to macro, focusing the lens changes the magnification factor. So as one focuses the object, the object's size in the viewfinder changes. This is why I mention the macro rails, they allow you to achieve focus and physically move the lens/camera in and out to reachieve the desired composition.)
As a telephoto, due to this lens' superb image quality, it actually produces images of a much greater quality than the 70-200mm f/2.8L IS. (I know firsthand, as I own it too) The difference is in the 70-200mm's versatility. If the light drops too low, the f/2.8 and the IS bests the f/3.5 quite rapidly. If the distance of subjects change quickly or you are unable to move your feet to frame images, the 180mm will be too constricting and the zoom will win. But under conditions where the 180mm f/3.5 can perform unhindered (such as at an airshow or out flower hunting), it will consistantly produce brighter, more saturated, and sharper images than the 70-200mm F/2.8 IS.
There is a complaint that circulates about the slow speed at which this lens autofocuses, expecially annoying when trying to be used as a telephoto. This is actually incorrect. The lens' autofocus drive does infact move very quickly, but it must traverse all the way from infinity to about 4" in front of the lens to find the subject. This is where the wait time comes into effect. Here's the solution: utilizing the AF limiter switch allows you to limit the AF search to only between infinity and about 5' in front of the lens. Consequently, this range is about 10% of the focus range (the other 90% is in between that 5' and the 4"). I no longer experience AF "hunting" problems when trying to use the 180mm as a telephoto.
Some other info about this lens:
The front objective element is actually concave. I think this is the only L lens Canon makes with a concave front element. It's probablyexpensive to replace if an accident should occur, so utilize a UV filter (72mm filter size). I recommend only the B+W or Hoya Multi-coated brands. (Yes they're pricey, but worth it)
The hood for this lens is actually a little too small in my opnion. If shooting a backlit object, I sometimes get the heavy orange glow in the viewfinder soI am forced to use my hand as a "hood extender" and block the sunlight.
For its size, this lens is relatively lightweight. It is much lighter than the 70-200mm F/2.8L IS and easily handholdable for extended periods of time.
This lens is compatible with Canon's extenders. I have personally used it with the 1.4x extender. The results are excellent. While CA and sharpness degrade noticeably on the 70-200mm, this lens shows barely a difference in image quality, except for the change in designation to a 252mm F/5, of course. And add to the fact that the macro capability is now gone from 1.0x to 1.4x, a big bonus.
So for whom does this lens apply?
-Those who neither have a macro or a telephoto prime who desire a single piece that can handle both aspects with excellent results.
-Those who plan on performing professional product photography.
-Those that are looking into serious nature photography (packing this lens with a wide-angle is pretty much all you'll need on a day hike).
What this lens does not do well:
-Low-light photography.
-Event photography.
-Landscapes.
Alternatives:
-60mm/100mm: lesser image quality, less telephoto compression in macro images, no real double-duty as a telephoto, but a whole lot cheaper and wider aperture.
-MP-E 65mm: much greater magnification (5.0x), lower image quality, no telephoto capability, odd design means studio use almost exclusively

Click Here to see more reviews about: Canon EF 180mm f3.5L Macro USM AutoFocus Telephoto Lens for Canon SLR Cameras

Bring small things into full-sized view with the Canon EF 180mm macro USM lens. Macro lenses can uncover detail that would be impossible to detect by the eye and give new perspective to extremely minute subjects such as insects or the petals of a small flower, and this lens is no exception. The 180mm lens offers such features as three UD glass elements and an internal floating system, which combine to minimize aberrations caused by changes in the focusing distance; an advanced ultra-sonic monitor (USM) for high-speed, quiet autofocusing; full-time mechanical manual focusing; and a focusing distance range of 1.57 feet to infinity. Compatible with the EF Extender 1.4x and 2x, the lens carries a one-year warranty.

Focal length: 180mm
Maximum aperture: 1:3.5
Lens construction: 14 elements in 12 groups
Diagonal angle of view: 13 degrees (at 30 feet)
Focus adjustment: Inner focusing system with USM
Closest focusing distance: 1.6 feet
Filter size: 72mm
Dimensions: 3.2 inches in diameter, 7.3 inches long
Weight: 2.4 pounds


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