Showing posts with label 5-6. Show all posts
Showing posts with label 5-6. Show all posts
Monday, November 14, 2011
Friday, September 30, 2011
Sigma AF18-200mm f/3.5-6.3 DC Optical Stabilizer Lens for Selected Canon Digital SLR Only
Sigma DC 3,5-6,3/18-200 OS C/AF for Canon
Wednesday, September 21, 2011
Thursday, September 8, 2011
Sigma AF18-200mm f/3.5-6.3 DC Optical Stabilizer Lens for Selected Canon Digital SLR Only
Sigma DC 3,5-6,3/18-200 OS C/AF for Canon
Sunday, September 4, 2011
Thursday, July 15, 2010
Sigma AF18-200mm f/3.5-6.3 DC Optical Stabilizer Lens for Selected Canon Digital SLR Only
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11.1x high zoom ratio lens designed exclusively for digital SLR cameras and incorporating Sigma??s original OS (Optical Stabiliser) function. Sigma??s unique OS (Optical Stabiliser) technology This lens is equipped with Sigma??s own OS function. This function uses two sensors inside the lens to detect vertical and horizontal movement of the camera and works by moving an optical image stabilising lens group to effectively compensate for camera shake. It also automatically detects movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. Excellent Optical Performance A Special Low Dispersion (SLD) lens and three aspherical glass elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range. The super multi-layer lens coating reduces flare and ghosting. It also produces an optimum, neutral colour balance. Close-up photography This lens has a minimum focusing distance of 45cm (17.7?) throughout the entire zoom range and a maximum magnification of 1:5.3, making it very convenient for taking close-up pictures. Inner focusing system An inner focusing system provides high performance and convenience. The non-rotating lens barrel perfectly suits the matched petal-type lens hood (supplied) and circular polarising filters. Zoom lock switch mechanism A zoom lock switch mechanism is provided to prevent the lens from creeping due to its own weight.
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Technical Details
- MIT BILDSTABILISATORSee more technical details
By E. Glen (Glasgow,UK)
If you have a 350D do not buy this lens, because you will have focussing problems. It seems to work fine with subsequent models, according to the other reviews. The Optical Stabiliser wouldn't function properly on the first lens that I bought. Focussing on its replacement was hit-and-miss, very frustrating. The retailer checked out my camera which was fine, and sent the lens to Sigma for a check - Sigma claimed that there was nothing wrong with it but,significantly, asked which Canon camera was being used. I had to sell it at a considerable loss.
The Photozone website uses a 350D for many of its assessments, and did not rate the quality of this lens very highly. Unfortunately, I hadn't read it until after I'd purchased it!
By J. S. Mcallister
Don't buy this lens.
It weighs a tonne.
It's overpriced.
Performance is mediocre.
Very disappointed!
By R. Miller (Somerset, UK)
An internet search reveals various specialist reviews that'll either rate this lens as ahead of the equivalent camera manufacturers' lenses or slightly behind them in terms of quality. That's an ambivalence that points to pretty good glass and at a price which is significantly less than the camera brand-name - the product almost sells itself.
I've had this lens about 8 months now and it's probably on my Nikon D80 about 60% of the time. It's a great all-round lens and in my view its quality is easily as good as the first-generation equivalent Nikkor (I don't know about the latest Nikkor version). It's well built (maybe even a little heavy) and exudes quality. The internal motor is virtually silent and the optical stabilisation only makes itself known by the little clicks you hear as the gyroscopes kick in - and make no mistake about it, the stabilisation works! I was a little sceptical of its efficacy when I got the camera as it was so quiet, I wondered if I had a faulty model, however after a half-hour testing it at various focal lengths, apertures and shutter speeds and comparing the results with the OS switched on and off, it became readily apparent that it does significantly help at those longer focal lengths and/or longer exposures.
For all that, you have to bear in mind the compromises involved in building a lens with this range. It's like the proverbial "jack-of-all-trades-master-of-none". It does most things pretty well without being outstanding at anything. It can be a little soft wide open and it's not a fast lens (although the OS helps), and if you like soft, creamy bokeh this is not going to deliver.
Having said all that.........would I buy another? Definitely! It's a great all-rounder and has come into it's own when I've been on overseas trips where it's impractical or ill-advised to take anything more than the bare minimum of kit. It's a great walk-about lens too. Whack it on the camera and you've got a lens that will deal with the vast majority of photographic challenges.
By Don Pelayo (Asturias)
This is a Superb multi-function budget lens covering a wide focus range and incorporating a very useful optical stabiliser ( a must when using it towards the narrow end in low light or fast moving objects )
The proce is right for a starter lens ( those who buy only the body of D-SLR ) and better value for money than a kit lens.
The biuld is execellent and feels solid and well balanced , it takes a 72 mm filter.
By Mr. L. D. Greenhow (UK)
After reading all the other reviews i went ahead and purchased this lens and Im not sorry. Bought it primarily for a family holiday to Disney so that I only had to take one lens and have just got the pictures back and they are great. But the lens is a little soft for the serious photographer. But an excellent travel lens it hasn't left my Nikon D40x since.
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Buy Sigma AF18-200mm f/3.5-6.3 DC Optical Stabilizer Lens for Selected Canon Digital SLR Only Now
Tuesday, July 13, 2010
Tamron - AF 18-270mm f/3.5-6.3 DI II VC LD Aspheric [IF] Macro Zoom Lens for Canon Digital SLR
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Tamron AF 18-270mm F3.5-6.3 Di ll VC LD Aspherical (IF) Macro. Ultra high power zoom lens with built-in Vibration Compensation The Tamron AF18-270mm F/3.5-6.3 Di II VC LD Aspherical (IF) MACRO (Model B003), is the first digital SLR lens in the world that delivers a remarkable zoom ratio of 15X (28-419mm equivalent) and is equipped with a highly effective Vibration Compensation (VC) mechanism. Designed exclusively for digital SLR cameras with APS-C sized image sensors, the new lens delivers outstanding image quality over its entire zoom range and its exclusive VC anti-shake system facilitates sharp handheld photography even at the longest telephoto settings. With its vast zoom-range, the Tamron AF18-270mm F/3.5-6.3 Di II VC lens enables the user to cover virtually any photographic subject from wide angle to ultra telephoto simply by turning the zoom control. It covers angles of view equivalent to 28mm to 419mm when converted to the 35mm format. In addition, this breakthrough lens is equipped with Tamron??s exclusive, proprietary tri-axial Vibration Compensation (VC) mechanism that eliminates or substantially reduces the effects of handheld camera shake. As a result, the user can enjoy the convenience of handheld photography in virtually any situation, from shooting candid images, to covering sporting events, to news photography, without worrying about camera shake having an adverse effect on image quality. The new lens will be made available in Canon and Nikon mounts. The price and launch date of the new lens will be announced at a later date. Note: Di (Digitally integrated) II lenses employ optical systems designed for exclusive use on digital SLR cameras equipped with smaller sized (APS-C sized) image sensors. Di II lenses are not designed for use with 35mm film cameras or digital SLR cameras with image sensors larger than 24mm x 16mm. (This special note ??APS-C sized image sensors? is hereinafter omitted.) MAIN FEATURES 1. World??s first and greatest
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Technical Details
- Hochleistungs Megazoom, ein Meilenstein!See more technical details
By Mr. Richard Pearn (UK)
I usually use top of the range Nikon gear and do have the 18 200 VR II. My wife wanted a lens with a bit more reach but did not want to keep chnaging lenses so we went for this Tamron. So far it has produced perfectly acceptable images and has stood up to quite hard use (she takes it horse riding!). For pixel peppers, yes there is a bit of distortion, chromatic abberations and softness at the edges but for the average usuer this won't be a problem. She loves the lens and has produced some lovely shots with her D90 espechially at the tele end stopped down to F8 (6.3 is a bit soft but not noticable on 7X5's. If you want an all in one walk (or ride around) lens this is perfectly adequate for the casual photographer. I can see a differece at the tele end between my 70 200 VR II nikon but it's not that far behind and the nikon cost 4 x as much and is huge and heavy. People must go out and use their kit as that is what it is for and not fuss over MTF charts at this end of the market. I would be more than happy to take this lens on holiday or on a trip where I wanted to have a great zoom range and travel light.
By Dr. G. S. Pyne (London, UK)
I have used this lens with my Nikon D70 for about a month and taken about 200 photos with it.
The optical performance has surpassed my expectations. The lens is generally very sharp and only slightly soft at the corners at maximum telephoto (270mm) and full aperture (f6.3). Many photographers may not notice this unless they look carefully. At the other end of the scale (18mm) there is some barrel distortion which should be correctable in photoshop (though I have not done this). Also I think I see slight vignetting (I guess half a stop) at 18mm, but this may be due to the uv filter I use. Again, no serious problem.
However, there are handling issues. The most annoying is that autofocus does not always "confirm", even in good light, which means that the shutter will not fire as expected. This happens about 10-15% of the time and could be a show-stopper for some. The solution is to switch quickly to manual focus after the autofocus has done its best. I believe that this autofocus issue is worse if the camera battery is at less than half charge. Combined with a rather average focusing speed and mediocre handling this means that I would not recommend this lens for action/sports photography.
Another lesser handling problem is that the zoom control is not smooth and is distinctly stiffer in the mid-range (70mm to 130mm approx.) than at the ends. This is irritating and reminds me that I did not buy a Rolls Royce (or even a Nikon).
The lens is also prone to "zoom creep" - in other words it opens under its own weight while being carried. I don't find this a problem as there is a lock which keeps the lens at 18mm.
The vibration control (anti camera-shake)works very well and I can handhold 270mm telephoto at 1/100 sec., or possibly better. You can't do this with the Nikon equivalent lens as it doesn't go to 270mm!
Overall I am satisfied with this lens and it fulfills its all-purpose function well.
By Mr. J. Boote (UK)
I purchased this lens on the strength of its very favorable reviews online and also in many photo magazines, I used this lens in comparison to my Canon EOS 7D kit lens the EF-S 18-135mm, can I save you people wasting your time with this lens, in back to back real life tests, the Canon kit lens wipes the floor with the Tamron, in every way, no I did not get a duff lens I had it checked out, thankfully I purchased this from Jessops, where I shall always return for their no quibble 30 day exchange policy, they may not be the cheapest, but they are worth paying that little extra for, the same goes for lenses I suppose.
I am just mad about the rubbish people print and write about online and in the photo mags, I hope you found this short review(not review factual true information) useful.
Thanks for checking this review out, I may of saved you time and money.
By Red Dolphin (UK)
What can I add to previous reviews?
I've been using this lens as the main lens for my Canon 350D. I've already taken a few thousands pictures and can confirm that you will often find vignetting close to 270 and barrell distortion close to 18. Compared to other lens of the same kind such as Canon or Sigma the Tamron one is the best one, including all its defects it wins over the others. WIth these sort of lenses the best investment you can do is to add DXO Optics Pro Standard Edition. It will automatically fix vignetting and barrell distortion and I have to say the output is fantastic. So, buy this lens with DXO and you will never travel with more than one lens egain. Also consider this lens are also a good companion for who intends to purchase it with the new Canon 550D or even the 7D. Theses cameras have been tested with this Tamron lens and will give you near perfection results. The results by processing the images with DXO are fantastic so I really recommend these lens with the above cameras.
By customer (UK, NI)
I purchased the Tamron only a few weeks ago. I have not done everything with it that I would like to. Here are my preliminary findings.
a. The zoom is not as fast as the Canon's kit lens. I thought this would be a major issue, but it turns out to be quite liveable. Most indoor shots still capture the moment. Much better than Non-DSLR performance on that.
b. The kids Nativity play brought out the best in the lens. With the normal flash I ould take good portraits uop to about 10-15 meteres in a very dimly lit hall. About 30% of the opictures were out of focus. Much better than I feared. At those distances the red-eye will be more of a pronlem with the pop-up flash because the flash will appear very close to the lens.
c. If you forget to unlock the lens you will just take pictures at widest zoom. You can just unlock when you need to.
I have always loved the "walkaround" lenses because they are so versatile. This is a lovely combination to take shots under most circumstances of an acceptable up to very good quality.
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Buy Tamron - AF 18-270mm f/3.5-6.3 DI II VC LD Aspheric [IF] Macro Zoom Lens for Canon Digital SLR Now
Monday, May 31, 2010
Sigma 18-200mm f/3.5-6.3 DC Canon fit lens
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Technical Details
See more technical detailsBy Pm Collier (cheshire, england)
for the money a very good all round lens, although works better between 20mm and 180mm, for sharpness good, tends to search for focus in low light too. you get what you pay for saves changing lenses all time and in good light copes well.
By R. Scriven (London England)
I have this lens on my Sony A550. It is a super lens, I have had some really great photos with it. I also have a Minolta 18-55 and a Minolta 75-300. This (almost) replaces both lenses in one. The colours are bright and clear, it works really well with the camera, no problems with focusing. The only downside is the restricted aperture at the far range, but that is always a problem unless you spend £000's on a lens and I for one am not about to.
By O. Wouters (Spain)
I thought that the other lenses that weren't Canon were of the same quality.
Talked to many fotographers and all agreed.
But NOT!! I get a much sharper picture with my original canon that with this Sigma lens.
So... I am still using my old one and only when I have to zoom in far away I use the sigma.
Bummer!
By P. M. Gough
I have been using the lens since Christmas and have been very pleased with the results. I have been using Sigma lens for many years and this does not disappoint. Although classed as a budget lens I have been quite satisfied with the results. It is a little soft at full aperture but stopped down to f8.0 it will certainly take an A4 enlargement and probably greater.
Some reviewers have found problems with slow focussing and lens creep. So far I have no issues with either though it is possible that these could occur in time.
Overall a great lens for the price.
By I. D. coulter (England)
Purchased this lens about a year ago. The build is excellent and it covers a very wide angle on a canon EOS cropped frame camera. It also saves you constantly changing lenses.
Unfortunately I found the photographs bog standard so I sold this lens and purchased 2 individual Canon Lens that cover this same range. One of these was a canon 55-250mm lens which gives excellent results (see the reviews on this site) and if you can manage it save up for the Canon 17-55mm, expensive yes but worth every penny (also see reviews of this on Amazon and other web sites)
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Buy Sigma 18-200mm f/3.5-6.3 DC Canon fit lens Now
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