1 comments about Sigma 105mm f/2.8 EX DG Medium Telephoto Macro Lens for Pentax and Samsung SLR Cameras.

1. excellent product with excellent service from the supplier. My son loves his new lens. Far exceeds expectation.

5 comments about Sigma 18-50mm F/2.8 EX DC Lens for Pentax Digital SLR Cameras.

1. I purchased this lens for use with a Pentax *ist D on a trip to China involving a lot of architectural and indoor sights, some in dim light. Although some reviews rate the 17-70 more highly, I selected this lens for the aperature. Overall it performed extremely well, providing sharp and reasonably fast focus and minimal distortion as long as it was not used at an extreme wide angle. I am very pleased with the purchase.



2. Allow me to start off by stating that I am an "old school film" photographer. When I mean old school I am talking about Nikon F and Nikkormat cameras. I also acquired some Pentax screwmount bodies and lenses back in the late sixties and early seventies. The lenses were made of metal and glass. They were sturdy, uncomplicated and still considered sharp to this day. Today we have too much plastic IMHO. Not to mention motors!
   I joined the digital revolution awhile back. I'm still waiting for affordable Nikon bodies that meter with the AI lenses. The D200 is just too much for me to consider.
   Recently, I purchased an affordable Pentax K100D with the kit lens. After doing my own testing at various apertures and focal length settings, I came to the conclusion that it was OK for the money but I wanted something sharper.
   So I bought this Sigma lens. This Sigma lens is way better and more costly but definitely worth it. Wide open it blows the kit lens away. Its wider (f:2.8) than the kit lens (f:3.5). In darkened interiors that little extra one half F stop will come in handy and be sharper as a bonus! Also, its F:2.8 over the entire focal range. This lens is a worthy investment and you will notice the sharpness.
   
   Pros:
   
   Sharp
   Larger minimum F stop
   responsive
   
   Cons:
   
   Costs more than the Pentax kit lens
   Uses larger filters (62mm as opposed to 52mm)
   Weighs more (I don't mind though)
   
   I feel that the Pros outweigh the Cons. Go for it. You won't be sorry.



3. First of all, if you have already bought the kit lens, and use it mostly outdoors, don't bother to buy this one. However, if you are doing a lot of in-house shooting, say, in a museum; or other situations you need this f/2.8 yet no tripod is available, then this is the lens for you.
   
   Comparing to the kit lens, the most impressive property of this lens is its f/2.8. As said before, it gave you a night-&-day difference in low-light conditions. The quality of the Sigma brandname is satisfying.
   
   Budgetwise, if you have more money, go for the SLD/ELD model, which is only $70 more. If you are tight on the green, don't forget this: for the kit lens, the fliters-kit are only $17 at amazon, yet for this 67mm, a single filter will cost you $50+.



4. I did a lot of research on the Sigma 18-50 f 2.8 zoom lens before I bought it. I have to say that it meets everything I've read about it. It is fast, really sharp and enables use in lower light and gives you the opportunity to get good depth of field. This is a lens worthy of replacing the standard kit lens included with most DSLRs. Five stars.



5. I needed a lens with a bit more zip. This one is fast enough for my liking and in my price range, much cheaper without the macro option of the new model.
   I find the sweet spot for this lens is between f8-11...crisp and clear.
   Images tend to be soft at upper and lower f-stops.
   Filter are on the expensive side.
   Over all I'm satisfied.

5 comments about Sigma 18-50mm f/3.5-5.6 DC Aspherical Zoom Lens for Olympus and Panasonic Digital SLR Cameras.

1. I purchased this lens to use with my Olympus E-500 body. I was skeptical as to the image quality because of the low price. I'm glad I decided to give it a try. It takes excellent sharp pictures. I would highly recommend it!



2. I saw the price of this lens and I was alittle skeptical. I read the the person's review of this lens, so I decided what do I got to lose and bought it. This is an amzing lens for the price I paid for. I'm really pleased with the results of the photos. I recommend this lens to anyone who is on a budget. You will be suprised when you see your photos.



3. I bought this after reading the other reviews on this item. I AM NOT disappointed. It may be a little slow, but for closeup shots of flowers, insects, etc., I was overwhelmed. The detail and color were amazing. I bought my EVOLT 500 with two bundled lenses, and was disappointed with both of them. This makes up for it. I'll be looking at other Sigma lenses from now on. For the price, it's unbeatable.



4. I give this Sigma lens a five star.
   
   This Sigma lens is a improvement than the Olympus E300 Packaged lens I got from: Zuiko 14-45mm f/3.5-5.6 Digital SLR Lens.
   
   I get sharper and clearer pictures then the Zuiko lens I got with my Camera.
   
   Thank You and Merry Christmas



5. I've been using the Zuiko 14-42mm for over 3 years now on my Olympus evolt e-300 , and the Sigma 18-50mm lens is far better. I have just recently got it and have used it many times. It's now become my favorite lens.
   
   The Auto Focus is far faster, the Manual Focus is very smooth. It's easy to switch from one another with a click of the button. The images are clearer and the focusing is amazing on it for selective focusing. Fits good in the hand and everything turns and moves smooth.
   
   The price is amazing.
   
   Only problem I see, is it feels delicate compared to the Zuiko and the shipping was not 2-3 days like I order, more like 8 but it's all good.
   
   -Matt

No comments about Sigma 55-200mm f/4-5.6 DC Telephoto Zoom Lens for Pentax and Samsung Digital SLR Cameras.

5 comments about Sigma 28-70mm f/2.8-4 DG Aspherical Large Aperture Zoom Lens for Canon SLR Cameras.

1. This is a cheap lens, but for the money, it doesn't get much better. Great walk-around lens. Excellent if you are looking for a lens to use in whatever everyday situation you encounter. It is fast, it is easy, it has great DOF, large aperture, solid build, fast focusing, sharp pictures, and low price. you can't ask for much more than that, especially if you are paying so little. Get it, and buy it from me because MY lens WORKS. 5 stars. worth every penny.



2. Well, you get what you pay for. I was looking for an alternative lens that was in the Xt's kit lens range because I didn't have a lot of money. The Xt's kit lens stinks below f/8 & I didn't expect the Sigma to be "much" better but I bought it used on a deal. I put both on a tripod and shot the same building scene on a sunny day. I found the Sigma to have less purple fringing especially in the lower f-stops where the Canon was terrible. Both are good from f/8 above but I felt the Sigma was a little sharper & that's why I use it over the Xt kit lens. Autofocus noise doesn't bother me much and it focuses fast enough for me (non pro). Build quality feels better than the Xt kit lens. You get a plastic hood for it, not on kit lens. Just remember...it's a low end lens so the 2.8 is almost useless. Just about any point & shoot will look sharper at 2.8 than this thing. It's pretty bad wide open & there's no point in using it. But I knew that when I was buying it and use it for outdoors shooting & usually keep it at f/8 or above. It's very pleasing for the price when used this way. Just get a Canon 50/1.8 for wide open shooting for a low price.
   
   So I believe it is a little better than the Xt kit lens but don't expect any "real" performance from the wider apeture. 3 stars for good performance @ f/8 and beyond for low cost. (BTW, the Xt kit lens does go wider at 18mm which you might want to consider but I find it to stink also at 18mm even stopped down, so I didn't care about it being wider than the Sigma).



3. it's fine for lots of situations but after using it for a few days i found myself wanting something with image stabilization. any shots above 55mm in low light were hard to get without some blur from camera shake. also, the focus ring on this thing feels pretty loose. overall i'm pretty happy with this lens. it's small and good for those times when you don't want a bulky, overbearing camera. in retrospect i wish i could have spent $400-$1000 on a really good lens.



4. Decided to buy this lens after purchasing a [body only] Canon Rebel XTi. Comparing this with the Canon kit lens will reveal insignificant differences. Both decent lenses for basic still photos, but it really shoots as a 45mm-112mm lens because of the XTi's 1.6x field of view crop factor. Next step is an upgrade to a wider view Sigma 18-200mm lens [[ASIN: B000NOSCGM]]. I've seen photos with this lens that are stunning. Canon lenses are excellent, IMO, but they tend to be overpriced for the minimum quality trade-off with third party lenses like Sigma or Tamron.



5. The lens was shipped in good order within the specefied time, however it wasn't shipped with a lens cap or case as the Sigma factory does. I am satisfied with the workings of the lens considering the low price. I like the fact that it is compact and light.

1 comments about Sigma 10mm f/2.8 EX DC HSM Fisheye Lens for Canon Digital SLR Cameras.

1. I bought this Sigma 10mm f/2.8 full frame fisheye lens for use with my Canon 30D. I really like the lens image quality, build quality and overall operation. I've already taken some fun pictures with it. I use it to complement my Sigma 10-20mm f/4-5.6 wide angle zoom. If you like take unique photos with an unusual perspective, you'll enjoy the Sigma 10mm fisheye and it's amazing depth of field. The lens also comes with a nice fitted case.

2 comments about Sigma 28-70mm f/2.8-4.0 High Speed Zoom Lens for Canon SLR Cameras.

1. I was searching for an inexpensive but fast 24mm or 28mm wide angle lens primarily for shots of the night sky when I found this. For about $85 including shipping, this lens turned out to be much better than the standard Canon kit lens -- sharper, working better in low light conditions and giving you a wider field of view. And this is much cheaper than a 28mm prime lens. I've gotten some fairly sharp photos from this lens and was surprised to find it allows moderately fast auto-focusing in even dim lighting. The lens also allows you to get within two feet of the subject.
   
   There are a few drawbacks, however. This Sigma is extremely susceptible to lens flare requiring much more care than you may be used to. The lens hood is attached to the staionary lens body and isn't at all useful at the lens' widest settings where the front of the lens is at it's most the forward position within the hood. Minor drawbacks also include that when the lens hood is reversed, zoom isn't accessible. The focusing motor is also louder than my other Canon and Tamron lenses.
   
   All in all, though, I'd say this lens is a real bargain for $85. Note that I'm using the lens with a 35mm Canon EOS Rebel Ti (non-digital).
   
   Post script - After using the lens quite a bit over the past weeks, I've really come to appreciate its ability to work in darker locations than typical inexpensive zoom lenses. In bright sunlight, however, lens flare still remains a major problem and shielding the lens with my hand has more than once lead to fingers framing my photos.



2. I am very very low budget photographer at this point, where ever I can squeeze money for something bit better stuff than I have, I buy it, but I read about it first. Sigma 28-70 has not much going on review wise and I don't know why. Even with little review, I took my chance and purchased it because of a job I got. I have a Canon Rebel XT Digital and first impression with this lens, horrible (!). I took some samples compared with my 50 mm 1.8 Canon lens, 18-55 kit lens and results were not that good. I put it back into box and was ready to return. When the job day arrived, I thought I should give it a try in real life and maybe it works better in real life than tests and start shooting with it all night under fluorescent lights. Unfortunately my kit lens wasn't fast enough and 50 mm was not wide enough for the job, I basically didn't have other option.
   
   After I got home, and saw the results, I totally changed my mind about the lens and decided to use it as my prime. With ISO 800 and around 2.8-3 stops I had pretty good shutter speed for fast moving kids around in not so lid location.
   
   I am posting a few photos of my son that I took, and you be the judge. I think you wouldn't believe those images came from this lens. If you are not so picky and low budget, this is a companion for your 50 mm 1.8 lens... I am going to get a better lens in the future, I have my eyes on Tamron 28-75 for a very nice price but I still keep the Sigma 28-70 for all around use... and yes it has glare problems :( which can be worked out. I gave 4 stars, because honestly it does good job for the price :)

1 comments about Sigma 100-300mm f/4 EX DG IF HSM APO Fast Aperture Telephoto Zoom Lens for Pentax and Samsung SLR Cameras.

1. I use it with a 1.4X teleconverter and it still give me a very good image quality

1 comments about Sigma 18-200mm f/3.5-6.3 DC Lens for Minolta and Sony Digital SLR Cameras.

1. Admit it, many of you are looking for that one lens solution for the times when you just can't bring all your gear. For me, this is that solution. I have used this lens extensively on my KM5D and find it to be quite usable. Yes, it is a megazoom. Yes, it has problems, but these are compensated for the sheer convenience. I find the lens to be rather sharp and colors to be quite nice as well. The price is certainly reasonable and the build quality is quite good (i.e. metal mount). I highly reccomed this lens, but be aware that it is not "G" (or "L" for you Canon folks) glass. Once you get by that, you can appreciate the lens for what it is. I highly reccomend the PTlens plugin for photoshop to use with this lens to correct distortions, vignetting, etc. Highly reccomended!
   
   Here's a nice shot I took with this lens while vacationing in Northern California.
   
   http://images14.fotki.com/v21/photos/8/896360/3774403/sfb3sm-vi.jpg

5 comments about Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens for Pentax and Samsung Digital SLR Cameras.

1. If you're reading this, you've probably bought a Pentax camera like the K10D or K100D, or are thinking of doing so. Most likely, you were drawn to Pentax cameras because they offer a good price/performance ratio. You don't want to pay for the biggest names - you want a great camera with which you can take great photographs, on a reasonable budget.
   
   This lens is the perfect accompaniment to that philosophy. It is not the best in the world, but it is the best you can get for $400, and for some way above that. It covers the range required for walkabout photography, and is reasonable convenient for that purpose, despite the wide body required by a 2.8 lens system. It also feels good in your hand and looks great on the front of your camera.
   
   Buy this lens now (perhaps along with the Pentax DA 50-200mm f/4-5.6 ED) and make some great pictures.



2. I bought this lens to replace the crappy kit lens I got with my Pentax *ist DL2, and I've gotta say, there's no comparison. Granted there's quite a price differance between the two lenses, but you get what you pay for, that's for sure. This is my new walkaround lens, you won't be dissappointed.



3. I have this lens for two weeks now and have taken more than 200 pictures with it using my Pentax k10d. My working lens so far has been the Pentax 28-105 f/3.2-4.5, so I opted for a wider angle. The choice was between the Pentax 16-50 f/2.8 or this Sigma 18-50 f/2.8. The cheaper price of the Sigma (60% of the Pentax) and relatively good reviews in magazines and on the net made me buy the Sigma.
   
   The first impression is a solidly build lens with quite a heavily dampened zoom ring. The protruding front element had some tiny bit of radial play, however the packaging was slightly damaged on the plane home. Nevertheless, this has no effect on the image quality. The lens is very very sharp. Side-by-side comparison with the Pentax 28-105 shows a dramatic boost in sharpness across the image. Focusing is good and quick, however I had a chance to play with the Pentax 16-50, which focuses quicker due to the HSM in the lens. Shots taken during fishing last weekend reveal the slight distortion of the lens at 18mm, which can be easily corrected in photoshop. However, there is some very slight wave-type distortion, which is nowhere near noticeable in real life but becomes apparent upon close scrutiny in Photoshop after I corrected the first-order barrel distortion. I should stress that the wave-type distortion is very very small. Out-of-focus bokeh is very pleasant for this lens at wide apertures. The colors are vibrant and better than the results I had with the Pentax 28-105. Vignetting is generally not an issue and is only slightly visible at wide-open apertures and can be corrected using Photoshop.
   
   Overall I am very happy with this lens and would buy it again. The cheap price is a major argument for this lens and also its sharpness. I find it is also a good lens to go with the sigma 10-20 without much overlap in zoom range. There are only minor points where it looses out such as the little slower focusing, therefore 4 out of 5 stars. Highly recommended.



4. I was initially thinking about the Pentax 16-50mm, but changed my mind due to the QC problems they are having with it. I did my research and many, many users highly recommend this one. I took the chance and could not be happier. This lens is fast and the IQ is as good or better than most other lenses.
   
   Highly recommended.



5. We bought this lens for a wedding occasion and it performed great!
   The lens is very fast and very sharp. It is a little heavy and unbalances the k100D a little. I guess it would be a better fit for the k10 or k20. We love it and are amazed at the photographic opportunities that a faster lens provides. Spend the money... avoid the pentax version because it is not better optically according to many reviews.