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Sigma 150-500mm f/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens for Canon Digital SLR Cameras
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|| Product Brand : Sigma || || Model : 737-101 ||
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Customer Review :
Great Lens! : Sigma 150-500mm f/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens for Canon Digital SLR Cameras
Essentially, the Sigma 150-500 OS is an indirect answer to the Canon 100-400mm F4 IS L lens. The problem with most comparisons is that the Canon F4 costs significantly more.
The direct point is that the Canon does perform marginally better in every aspect. The Sigma clearly wins in cost-performance ratio but that also varies based on your intended use and preferences. The main difference is the 70%+ price in the lenses.
The Sigma 150-500 is *NOT* a substitute for a low-light high speed use telephoto lens such as F2.8 lenses. However, the 2.8 lenses are an apples to oranges comparison - comparing a 400mm 2.8 that costs several times more ($6500) and suited to a different purpose. The Sigma lens is suited more towards daytime wildlife as opposed to sports events in varying conditions or poor lighting in any situation.
The 150-500 has shortcomings compared to the more expensive lenses - which is typically the case for any brand. I still highly recommend the lens & have enjoyed 600+ pictures within 7 days of owning it. The lens is excellent for wildlife, a great "out-of-box" experience with accessories, and will serve most a long time.
+ Optics are outstanding considering the market price.
+ Less than $1000 USD as of this writing
+ 500mm without use of a teleconverter
- Not as sharp compared to the 50-500 Sigma but the 50-500 lacks OS/IS
+ Light build quality considering lens class
- Durability trade-off for lower weight. Sealing not optimal, housing uses plastic.
+ Aesthetics. Rubberized/tactile feel with a sleek dark gray body.
- Aesthetics/durability. Coating on body prone to marks/scratches.
- Stiff zoom ring takes effort to operate.
+ Durable OEM lens hood included
+ Solid OEM hard lens case included (in fact it is shipped in the case)
+ OEM Tripod collar included
+ Excellent industry warranty (3 years USA)
+ HSM motor quick but not the fastest.
- Seeks a bit for focus in less-than-optimal light a bit earlier than the Canon equivalents.
- Autofocus a bit more finicky than lens-class equivalents.
- OS certainly does not reach the claimed 4 stop benefit
+ OS obtains a clear 2 stop advantage
- Noisy OS
- Image appears to shake a bit in viewfinder w/ OS operating
A final note: Most lenses (except prime non-zoom lenses) are a bit soft at the widest aperture (f/5) - this Sigma included. I certainly do not dock a non-prime lens for this as others have.
Updated 10-13-2009
I pushed several hundred more pictures through the lens and I am still satisfied. I will note a few observations including those not associated with the lens performance.
The Sigma feels a bit loose on my 450D/XSi when mounted. This is pronounced when adjusting the zoom ring which is rather stiff. Research indicates this is normal due to manufacturing tolerances, especially concerning the lens release/lock pin on the body mount. This issue varies depending on the camera body and lens - thus not a Sigma issue per say. An associate w/ the Canon 100-400 F/4 L IS lens reports similar behavior on his camera body (40D) but not on other camera bodies. I can't fault Sigma for this issue and I doubt everyone experiences this.
I mentioned a stiff zoom ring but I wasn't concerned with this initially. I thought the same about my Canon 24-70 F/2.8 L lens when I first received it. However, the stiff zoom ring coupled with the slight camera body shift seems to amplify the annoyance. Buyers should be very aware of the stiff zoom ring which I had not originally mentioned.
86mm filters are rather expensive. Tiffen offers a $30 UV filter solution but my experience is that Tiffen are poor quality products. Admittedly, I'm using one for the moment but have not noticed any reflections/aberrations. An 86mm Hoya UV filter runs almost $100 which I will purchase at a later date. I would not recommend a polarizer due to the loss of light.
I have gone through several camera bags - swapping and storing the lens in the field is a task. I am currently using the Lowepro Flipside 300 but that tends to be a snug fit w/ body attached. I will likely purchase a Lowepro Stealth Reporter D400 AW to carry my flash, 24-70 L lens, Sigma, and other necessities. The lens measures almost 9.5 inches in length.
