Posts tagged ·Image Sensors·...

Sigma 18 50mm f 3 5 5 6 DC HSM Wide Angle Zoom Lens for Nikon D90 D80 D70 D60 D50 D40 D40X D5000 D3000 D700 D300 D200 and D3 Digital SLRs

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Sigma 18 50mm f 3 5 5 6 DC HSM Wide Angle Zoom Lens for Nikon D90 D80 D70 D60 D50 D40 D40X D5000 D3000 D700 D300 D200 and D3 Digital SLRs




Exclusively designed to suit the characteristics of digital SLR cameras. The image circle was designed to match the size of the image sensors of most digital SLR cameras and this has resulted in a compact lightweight lens. The use of aspherical lenses provides correction for various aberrations and makes high quality images a reality throughout the entire zoom range. The Nikon fit version also includes an HSM auto focus motor. Compact dimensions offers superb handling and mobility. The use of aspherical lenses provides correction for various aberrations throughout the entire zoom range and produce high level of optical performance.

User Ratings and Reviews

5 Stars Better alternative
This is a better alternative to the kit lens you get with your Nikon, this lens is better built. This lens is more durable, and it can take photos in lower light which makes it faster.

4 Stars Petite, nicely put together, sharp
I bought this lens mainly to go with my little Nikon D60, and I’ve been pleasantly surprised by it. For the roughly $100 I paid for it, it’s turned out to be quite a good lens. I originally bought this lens because of it’s tiny size. I also own the Nikon 18-55 VR which is a nice lens, but it was just large enough to be extremely difficult to wedge into or pry out of the small case area I have for it, so I thought I would try this lens out. It’s enough smaller than the Nikon lens that it fits about perfectly into the case I wanted to carry it in.

Pros:

- the lens feels better constructed than the Nikon 18-55 VR. It’s not so much that the Nikon 18-55 is horrible(at least in comparison to other similar lenses), but this lens does feel a bit more solid and above average. Does it matter? Not much to me, although the metal bayonet mount is really nice to find in this price range.

- I can’t see any difference in sharpness between this lens and the Nikon 18-55 VR. I’m not saying there isn’t any difference, there might be, but I haven’t been able to see it. This a good thing, since the Nikon 18-55 that this lens supplanted has been a sharp lens. That’s not to imply that this lens is as good as a $1200 pro lens, but in comparison to the other similar lenses I’ve tried, this little Sigma isn’t lacking in the sharpness department.

- it’s tiny. It’s barely larger than most prime normal lenses.

- focusing seems really fast and precise, more so than the Nikon 18-55 that I own.

- inexpensive.

Cons:

- like all inexpensive, small sized lenses, it has a fairly small maximum aperture, f3.5 at 18mm to f5.6 at 50mm. Not a problem for me, and not really a con, it’s a trade-off to get the size down and keep the price reasonable.

- Sadly, no OS. Again, I can live with it the way it is, since VR would make the lens larger, and maybe a little more expensive.

The more I use this little semi-precious gem the more I like it, and the more convinced I am of it’s excellent value.

5 Stars Great Lens, awsome price, fast shipping
If you have never owned a sigma they are every bit as good as a Nikon for all but the most demanding professional photographs. I’m sure the expert photographer can tell the difference but my dad (who teaches photography at a local college) swears they are every bit as good for a fraction of the price

4 Stars Affordable good performance
Right out of the box instructions were easy to follow. Lense quality is fairly good. I thought that for the price I would get something “cheap”; wrong. Very sturdy. Take the time to read the setting instructions and you will get very good/excellent results.

5 Stars Food photographer
I like to take close ups of food and from my use of it so far, it is a great macro lens!

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Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens

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Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens




The fast, wide-angle to medium telephoto AF-S zoom lens from Nikon is optimized for edge-to-edge sharpness on both the Nikon FX (23.9 x 36mm) and DX-format image sensors, with focus as close as 14.9 inches. Enhanced optical formulas, engineered to produce exceptional sharpness, contrast and color, render outstanding image integrity, while two ED (Extra-low Dispersion) elements and PGM aspherical lenses futher control chromatic aberrations at even the widest aperture settings It has an exclusive Nano Crystal Coat to reduce ghosting and flare for even greater image clarity. The Nikon Silent Wave Motor (SWM) enables ultra high-speed autofocusing with exceptional accuracy and powerful, super-quiet operation, while the Internal Focus (IF) provides fast and quiet auto focusing without changing the length of the lens and M/A Focus Mode switch enables quick response to changing situations between Auto and Manual focus operation. With all these features, as well as an incredible resilience to dust, water and general wear and tear, the Nikon 24-70mmf/2.8G ED Lens is a welcome way to meet your telephotography needs. Internal Focus (IF) provides auto focusing without changing the length of the lens M/A Focus Mode switch enables quick changing between Auto and Manual focus operation.

User Ratings and Reviews

5 Stars Very pleased with this lens
I was frustrated with low light shooting situations, don’t care for flash much, so this was my choice. This lens is the one that just stays on my D5000 body. Travel shots, catching the grandkids at play or whatever, it is the most universal lens I could ask for. It is super fast to focus, produces razor sharp images and the weight helps steady things a bit. I also wanted the new 70-200mm F2.8, but I know I will do more shooting in this range than any other. I love it.

1 Star pronounced front focus on wide end
The copy of the Nikon 24-70 f2.8 lens that I received exhibited gross front focus. The front focus was so severe that no special testing was needed to see the effect. The problem started to decrease after approximately 36mm, but continued throughout the remainder of the focal length. Because the front focus was more pronounced toward the wide end and less severe at 70mm, the use of the fine tune feature in my D300 would only correct one end or the other. I took the lens to a local store and found the problem reproducible with a D300s body. Auto focus or manual focus gave the same results. The problem was the same irrespective of focus point used. I only tried the single shot method, as I rarely use the continuous shooting mode. I had back focus issues with two Canon 5D bodies and the Canon 24-70L f2.8 lens. After sending both bodies and the 24-70L lens to Canon repair facility several times and not getting the back focus issue resolved, I gave up on Canon and switched to Nikon. It has been an unhappy experience so far with Nikon. BTW, I have the LensAlign to test a lens for front/back focus. However, the problem with the Nikon lens was so severe that it was first easily observed in real world picture taking situation. I did use the LensAlign, which showed a front focus issue as well.

Update (December 14, 2009): The lens was exchanged. Unfortunately, the replacement lens was worse for front focus. Besides the D300 body that I own, I tried the replacement lens on two D700 bodies, one D200 body, and one D3 body. The front focus was present with all of the tested bodies. I own five other Nikon lenses and none exhibit front focus problem. One lens out of the five (50mm f1.4) does show ever-so-slight back focus. I also have an inexpensive 12-year old 24-135mm variable aperture third party lens. This lens is not as sharp as the Nikon lenses that I own, however, there are no focusing issues with this lens at all. A brief look at some of the forums online will show that this is not an isolated case. In the end, I would say that this lens is finely crafted and the zoom ring is silky smooth. It takes very sharp pictures, only the focus is about five feet in front of the target that is used to focus (16 feet away)! I have been a Nikon fan since the F3 body days. However, my one-star rating stands mainly due to the fact that this type of quality control is unacceptable in light of the relative cost of the optic.

4 Stars Fantastic, but watch out for quality control
I purchased this lens about 8 months ago. I shoot a D300 with grip. I have traveled to a variety of places and taken some amazing pictures with it. The lens is very versatile in a landscape and portrait setting. There are some times when I wish I was carrying a 14-24mm however, as a main lens for travel and portrait photography it’s fantastic. Additionally, the auto focus is quiet and precise when coupled with manual focus point use. The zoom is smooth and precise as well.

With all that said, there has been one inexcusable flaw and the subsequent fix for this was unacceptable.

After shooting a panorama at the top of a mountain at very small apertures, I found blemishes in all of the photos. It turns out that from the time that I purchased it to when I took those photos (about 1 week) some sort of internal material had collected on the inside of the rear element. As such I had about 60 photos that needed to be corrected.

Returning to the states, I was told that I would have to send the lens back to a processing center. This in my opinion is grudgingly acceptable, however the policy should have been to replace not repair. The final straw was being told to pay the return shipping and the packaging fee. After spending nearly $2,000 for a lens and finding a flaw the hard way, I would expect at the very least the burden would be on the manufacturer and/or supplier to correct their issue.

I purchased this product from Bromfield Camera Co. in Boston. I had hoped to support a local business, but it seems one simply pays more for the same level of service that you’d get from an online shop.

In closing, inspect the rear element before purchase and during early use – also, take a few blank shots of a white object at f/22 to see if there is an internal contamination for the first few weeks of use.

5 Stars Amazing — Sharp — Solid
I’ve owned this lens for about a month. I’ve owned lots of lenses. I’ve owned lots of SLR’s. Slid this baby onto my D700 when I got it and blew off several dozen frames. I immediately liked the feel in my hands. Solid. Smooth. A tank of a lens. Even the lens hood snaps into place with a definitive button snap. This shade won’t fall off accidentally. Everything was just right. Even comes with a belt/shoulder strap case should you ever make the mistake of taking this lens off the camera.

Turned on the camera and the lens springs to life. Shot several dozen frames around the building. Scenes that were pretty challenging. Hoped to find some meaningful improvements over the images I’ve been shooting. It feels good. Focus was snappy and amazingly quiet. Focus was precise. Focus was decisive. View finder was bright. Balance was very, very good. Burned off a few dozen frames and everything just felt right. Like it never had before.

Of course, the tale is not in the feel of the lens, but in the images. Popped the CF card into the computer tonight, fired up Capture NX2, and started loading images. Wow. I’m really taken aback. I really am.

The focus was sharp, sharp, sharp. After color-correcting for the poor/challenging lighting I had been in, the colors jumped to life. The details were razor. The textures velvety. The depth of field precise. The inflatable bags that had surrounded the box in the shipping carton were soft and cushy on the screen. The cardboard box was cold and cardboardy. The bar code label from the box stood out in gentle relief from the surface of the box. Droplets in a water bottle on the table were wet on the screen. Wow. Just “WOW.” What a joy this lens is already. Really. Really.

I’ve had the lens about a month now. Just got back from Phipps Conservatory where I shot most of the morning. This lens is fabulous. Razor sharp. Sharp, sharp, sharp. And the colors were deep and pure and vivid. No distortion at the corners. Depth of field was spot on.

I can’t recommend this lens enough. I’ve used higher end off brand lenses. And I’ve used lower end to mid Nikon. Always preferred the Nikon. They just worked well and created an image that looked real and consistent. But now… This is the lens. Just wow. If you’re on the fence, get off the fence. This is it. If your pictures aren’t what you’re looking for with this lens, it is not the lens.

4 Stars Great lens overall
This is not a 5 star for me. Here are the reasons: very heavy, no VR, and very expensive. For this price there should be VR, that is the biggest negative I can say about the lens. But if you want a top notch walking around lens with very good optics and zoom flexibility, then this fits the bill. To be honest a 50mm f1.4 lens is of the same quality or better sharpness-wise than this lens, but the 50mm gives you NO flexibility when shooting different things. Thats why I got this lens. In most other areas the 50mm f1.4 is better because it is much lighter, cheaper, and the much larger F stop kicks butt in low light which this lens just can’t match with f2.8. don’t get me wrong, f2.8 is great, but f1.4 is MUCH better for low light and backgound blur….but like I said there is zero flexibility with the 50mm lens. So it really depends on you if this 24-70 lens is right. I am going to keep and use my 24-70 all the time. It will probably be my main lens, but mostly for its 24-70 flexibility. If I just wanted pure clarity/sharpness and low light performance then a 50mm f1.4 is the lens to get. but we all know 1 lens is never the ultimate solution for everything. So check the 24-70 out and see if the weight is an issue or not. I can tell you on a D700 body with a SB800 flash this lens get VERY heavy VERY quick. That is not a “all day” walking around setup. So far sharpness has been on par with my prime 50mm, which is high praise. F2.8 is still pretty good for separation of subject from background. Overall a great lens. So good luck. Hope this helps.

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Tamron AF 18 200mm f 3 5 6 3 XR Di II LD Aspherical IF Macro Zoom Lens for Canon Digital SLR Cameras

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Tamron AF 18 200mm f 3 5 6 3 XR Di II LD Aspherical IF Macro Zoom Lens for Canon Digital SLR Cameras




Designed for exclusive use on Canon digital SLR cameras with smaller-size imagers, this Tamron AF 18-200mm f/3.5-6.3 Di-II aspherical macro zoom lens is ideal for a host of situations. The high-power zoom lens–which offers an equivalent focal length of 28-300mm in 35mm format–adds versatility to your lens menu, zooming from a true wide perspective to an ultra tele zoom, all in an amazingly easy-to-use design. As a result, the lens is ideal for everything from landscape shots to sports and wildlife photography. The lens also incorporates several of Tamron’s proprietary core technologies, including aspherical elements that minimize chromatic aberration, a multiple cam mechanism, and an integrated focus cam design. The technologies combine to create the world’s lightest, most compact 11.1x digital zoom lens. Other features include an angle of view of 75 to 7 degrees, a minimum focusing distance of 17.7 inches, and a 62mm filter diameter. All Tamron lenses carry a six-year warranty.

Note: The Tamron AF 18-200mm f/3.5-6.3 XR Di-II zoom lens is not designed for conventional cameras or digital cameras with image sensors larger than 24mm x 16mm.

Specifications

  • Focal length: 18-200mm
  • Maximum aperture: f/3.5-6.3
  • Lens construction: 15 elements in 13 groups
  • Angle of view: 75 to 7 degrees
  • Type of zooming: Rotation
  • Diaphragm blades: 7
  • Minimum aperture: f/22
  • Minimum focusing distance: 17.7 inches
  • Macro magnification ratio: 1:3.7 (at f=200mm)
  • Filter size: 62mm
  • Corresponding mounts: Canon
  • Lens hood: Yes, flower shaped
  • Dimensions: 2.9 inches in diameter and 3.3 inches long
  • Weight: 14 ounces
  • Warranty: 6 years

User Ratings and Reviews

5 Stars Tamron Lense
I am a novice photographer. Alot I do not know. I ordered this Tamron lense thru Amazon. When it arrived (timely), it caused my camera (Canon Rebel Xti)to shut down. Would not work. I contacted Tamron and explained the “error msg” I was getting from the camera and after brief conversation w/tech person at Tamron it was determined that the lens was flawed and for me to contact Amazon and explain this and get a replacement lens. Uh-Oh, right? Let me tell you that a call to Amazon was all it took. A new lens was shipped that day express mail (free of charge) with an authorization label to send the faulty lens back in the same box with charges reversed to them. The new Tamron lens arrived and is working beautifully on my camera. Bottom line? This is a fine lens and Amazon (in my opinion) is one great and reliable company that I will use without hesitation.

1 Star Very fuzzy
Disappointed with the lens. Not clear at all and very slow to focus. I returned it immediately.

1 Star Slow focus
I am a professional wedding photographer and I tried this lens on my canon 7D at my daughter’s Halloween party at school. I’m glad I didn’t bring it to a wedding off the bat. The room (as most school rooms are) is well lit from windows and the florescents were on – the lens couldn’t pick up on the dark costumes to grab fast enough. It hunted a lot and I lost some shots. At the widest, there was A LOT of blur around the edges. Not a crisp shot. I returned it today (after receiving it the day before yesterday). I do have another Tamron zoom that is slow to focus, but this one was much slower in lower light – would not have worked at a wedding ceremony (especially a church) nor a reception.

4 Stars Upgraded from stock lense
I bought this lens to upgrade from the lense that came with my Rebel XTI. I used the “old” lens (18-50mm) on a two week trip to Scandinavia last year and did not bring a longer one due to luggage limits. I bought this one for a three week trip around the Canadian Maritimes this fall and it provided much more flexibility in the shots I could take using just one lens. As for improved quality of the photos, I guess its hard to say since I sharpen all of my photos and when framing an image in the view finder, I allow for a little cropping during post-processing in Photoshop. I much prefer it to the original lens for the range of shots I can take while travelling without having to switch out lenses.

1 Star Bad Leans
I don’t recommend this Leans, the one I got it is not sharp and all the pic it takes are soft and not sharp

maybe the one I received is like this but I can write a review for the product I got

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Canon EF S 55 250mm f 4 0 5 6 IS Telephoto Zoom Lens for Canon Digital SLR Cameras

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Canon EF S 55 250mm f 4 0 5 6 IS Telephoto Zoom Lens for Canon Digital SLR Cameras




Incorporating Canon’s Optical Image Stabilizer technology, this Canon 55-250mm telephoto zoom lens captures long distance, low-light shots far better than many comparable lenses, helping you photograph the far-off action of athletes or zoom in for an intimate portrait with a blurred background. The high-zoom-ratio lens is equivalent to a focal length of 88-400mm in the 35mm format (when used on Canon EOS cameras compatible with EF-S lenses). More significantly, the image stabilizer effect creates an equivalent shutter speed of roughly four stops faster than the same size lens without an image stabilizer. In other words, if the slowest shutter speed you can hold a 250mm lens steadily is normally 1/250th of a second, this Canon lens will let you hand-hold shutter speeds as slow as 1/15th of a second. The lens also boasts a UD-glass lens element to correct chromatic aberration to create excellent image quality throughout the zoom range. Delivering an excellent performance at an affordable price for all photographers, the 55-250mm lens carries a one-year warranty.

Specifications

  • Focal length: 55-250mm
  • Maximum aperture: f/4 to f/5.6
  • Lens construction: 12 elements in 10 groups, including one UD-glass element
  • Diagonal angle of view: 27 degrees (at 50 feet) to 6 degrees (at 15 feet), with APS-C image sensors
  • Focus adjustment: DC motor, gear-driven (front focusing design)
  • Closest focusing distance: 3.6 feet (0.31x maximum close-up magnification)
  • Filter size: 58mm
  • Dimensions: 2.8 inches in diameter and 4.3 inches long
  • Weight: 13.8 ounces
  • Warranty: 1 year

User Ratings and Reviews

5 Stars I love this lens!
I really needed this lens, because I didn’t want to get a really super expensive zoom lens! The features are great, not the highest quality, but you will pay a lot more for that!

5 Stars Good lens with cheap price!
The image captured is pretty sharp. I don’t have a L lens so I can’t compare to 70-200, however, I don’t use this long range very often, and 55-250 is good enough for me.

3 Stars Canon EF 55-250
I wish I had gotten a stronger lens. I like to get in close and this does not go very far.

4 Stars Canon 55-250mm IS lens
I get excellent pictures and it is easy to use. It would be nice if the F numbers were smaller but I guess it would cost more then. I also have a 75-300 IS lens and it is very heavy so this is nice for hiking.

4 Stars Great product for the perfect price!
I was looking for a perfect zoom lens for my Canon Rebel T1i (500d) that would not break the bank. After readings tons of reviews and comparing/contrasting lenses, I finally decided to get this one! When I tried it out the first time, I was pleased- more pleased than I expected. Even on a cloudy day, the quality was still there! These are a few positives and negatives about this lens:

Positives:

*Good quality, especially on a sunny day!

*Great zoom!

*Quick to put on camera body and start taking photos

*Easy to zoom (almost too easy!)

*Has manual/auto focus

*Not too big or too small

*Has image stabilization

Negatives:

*some grain during cloudy days when you have to bump up the ISO

*Some vignetting on full zoom

*not a fast lens (which means that the F-Stop number is not low enough, which does not allow lots of light in)

*NOT useful (quality-wise) indoors or night time photos

*Sometimes I have to switch between my kit lens and this lens because it starts at 50mm (and I need a wider lens)

*use of plastic to make this lens

It many seem like there are more negatives, but those are just the broad positives. For the money, this lens is perfect. I am very satisfied with it, and glad I bought this one. Like many people, I need a zoom lens to get the job done, not to be PERFECT in every way. What lens is?

If you need a zoom lens, buy this one!

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