Sigma 50-500mm f/4.5-6.3 APO DG OS HSM Telephoto Zoom Lens for Pentax SLR Cameras - USA Warranty

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Sigma 50-500mm: Picture 1 regular $1,509.00

About Sigma 50-500mm

Get this Sigma 50-500mm ,normally $1659.00, on sale at $1509.00 for a total savings of $150.00 and Shipping is free!.

New Sigma APO 50-500mm F4.5-6.3 DG OS HSM. This is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma's original Optical Stabilizer function.

This lens covers a wide range of focal lengths from 50mm to 500mm ultra telephoto. The OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible.

For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an image sensor shift anti-shake system. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement.

Four SLD (Special Low Dispersion) glass elements provide excellent correction of color aberration. The Super Multi-Layer Coating reduces flare and ghost and ensures high image quality throughout the entire zoom range.

This lens has a maximum magnification ratio of 1:3.1 (at the focal length of 200mm) making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. The addition of the optional 1.4x EX DG or 2x EX DG APO Tele Converters produce a 70-700mm F6.3-8 or a 100-1000mm F9-12.6 MF zoom lens respectively.

This lens is equipped with a Petal-type hood to block out extraneous light. The filter size of this lens is 95mm and the lens is supplied with a step down ring enabling digital cameras with an APS-C size image sensor to use an 86mm filter.

*It is not possible to use a Polarizing filter with the step down ring. If you attach a Polarizing filter, you may not be able to remove it from the lens again.

*For Pentax and Sony mounts, it is not possible to use the AF and the built-in OS function of this lens when attaching it to film SLR cameras as well as Pentax *ist series and K100D.

*Nikon and Pentax mounts do not have an aperture ring. Some functions may not work depending on the camera model.

The Sigma 50-500mm is commonly used for Wildlife photos and more.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Strong construction (28),Durable (25),Fast / accurate auto-focus (21),Consistent output (18),Easily interchangeable (16),Rugged (16),Nice bokeh (8)
Heavy (27),Poor in low light (11),Blurry focus (6),Slow focus (5),Lens creep (4)
Best Uses:
Wildlife photos (35),Landscape/scenery (26),Sports/action (20)
Reviewer Profile:
Photo enthusiast (19),Semi-pro photographer (17),Pro photographer (4),Casual photographer (3)

Sigma 50-500mm Specifications

16 Groups /22 Elements
Angle of view
46.8° - 5°
F stop range
Closest Focusing Distance
19.7-70.9 in./ 50-180cm
Maximum Magnification
1:3.1 (f=200mm)
Filter Size
95 with 86mm step down adapter
Dimensions (Length x Diameter)
8.6" x 4.1" / 219mm x 104.4mm
19702g / 69.5oz.
Mfr #

Sigma 50-500mm Reviews

Review Snapshot®


(based on 46 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


Far exceeds expectation

I shoot a lot of wildlife and this lens is perfect. Since the lens arrived I have shot more than 500 pictures of bald eagles and never have had such clear and sharp pictures. The OS setting supports capturing the eagles in flight. I am surprised at how much I can shoot hand held.

Reviewed by 46 customers


A Great Lens at a Great Price


from Randolph , Ohio  -  Semi-pro Photographer

I had one of the earlier film models that I used with a Canon EOS3 . When I got my Canon 50 D , I could see some Ghosting . I was shooting and eagle nest from 400 yds. Lots of backlight caused a reflection of the sensor . As soon as I saw and add that Sigma updated the lens in a DG version ,I ordered it and have Great results .Like any other tool ,you have to try different things to see what works and do your home work before buying anything . Sigma has a great website that you can find compatibility charts that tell what converts will work with .I love the lens and have sold a lot of pictures taken with it.I am in my 70's and I can hand hold it. Tripod best for long shots .Turn off IS


Not what I'm Looking for!


from Provo, UT  -  Pro Photographer

Tt's not what I need.


Bigma lens


from Niceville Fl  -  Semi-pro Photographer

Great lens appears in excellent condition and works as advertised


Compatable with Nikon D5200


from Centennial CO  -  Photo Enthusiast

My wife and both use this lense for general photography and race car photos. It does have it's own focusing motor and auto focus works well. Very good bang for the buck.


Good lens for the money


from Qatar  -  Photo Enthusiast

If your thing is wildlife and you want to lug only one lens you may consider the Bigma as it's versatility can not be beat. At 200mm its useful for those quick shots of dragonflies and butterflies. IQ is far from a dedicated macro lens though, but this is to be expected. Three stars for me because the AF is slow,(initial focus acquisition is night and day as compared to my Canon 400 f 5.6) focus limiter might improve it a bit. I'm shooting it on a Canon 60d for the past couple of months. Not sure if I would keep it but I will give it more time.

(2 of 3 customers found this review helpful)


A Major Disappointmment


from Corpus Christi  -  Photo Enthusiast

I will be returning this lens. I bought it for bird photography. It is a very very heavy 4.5 lbs. It is very bulky. Even though they claim it can be hand held with great results because of its in lens optical stabilization I found that didn't work at all. You must have a tripod or forget it. Most of the time when you point it at a subject it just sits there out of focus and doesn't even hunt. It just sits there. I missed many shots because it wouldn't focus and when it did, extremely slow too slow for action shots. Also not sharp in focus, very soft. The manual focus actually works pretty good, very smooth but again you must have a tripod so you can turn the manual focus ring with a free hand. The image still comes out soft when the subject is shown to be in focus. With the large price it is a huge disappointment for the high dollar I paid for it.

(1 of 1 customers found this review helpful)


Just arrived!


from Mount Shasta, Ca  -  Photo Enthusiast

I just retired and my partner and I have found a common theme of bird watching and photography. We live near several bird sanctuaries in northern California, so we decided to move from binoculars and spotting scopes and a 55-300mm zoom on a Nikon D90 to gear that could reach out far enough to capture birds on camera. The goal is to capture birds in flight, a fascination of mine since childhood. After consulting with several very experienced wildlife photographers, I did not follow their advice, which of course was to buy a full frame camera, a Nikon 600mm F4 lens and a Gitzo tripod. I opted for a refurbished D7000 (see my review) which was/is mint. After much research I called Adorama yesterday morning and ordered the Sigma 50-500 f4.5-6.3 vibration stabilized lens (they call it OS and Nikon calls it VR) with a UV filter, polarizing filter, 1.4x Sigma Teleconverter, 5 year warranty for $2100. Reviews advise against a polarizing filter because it can get stuck but my solution is to buy another 95-86mm reduction ring if this happens and carry both. I wanted it fast so ordered it overnight delivery. It arrived at 1PM today, from New York, the day before Thanksgiving, despite all the weather and flight delays. I was impressed! Adorama made my day. Why this lens? Several reasons. Cost although not trivial was low compared to 8K+ for a refurb 600mm F4 fixed focal length lens. It is a walk around lens suitable for shots in the house as well as birding that is very well stabilized and suitable for shooting without a tripod. I am not too concerned at this point about taking the perfect bird photo, just to be able to try. Portability and use without a tripod were major considerations. Reviews raised issues about autofocus not locking in or locking in on a nearer object than desired. I looked for and noticed this but put the AF area mode on point focus and was able to shoot through a candelabra and focus on a more distant clock. Autofocus does not work with the teleconverter, of which I was aware from the product literature, reviews, and Adorama salesman. One reviewer had better luck with the Tamron teleconverter and autofocus, but I stuck with Sigma TC for the time being. Not too worried about AF in a lens that can reach out ~1000mm handheld. Of course I tried that combination first and found great image quality and no vingnetting (I did put on the 95mm to 86mm reduction collar recommended for Dx format cameras) and used a tripod. At 4 lbs I can handle it without a tripod, although my partner would have trouble. Will use a monopod or tripod for longer shoots. In the house hand held video and shots of my granddaughter were crystal clear. So very pleased. A great one size fits all starter lens to get into the difficult and $$$ birds-in-flight game. Probably a 600mm f4 and a full frame D610 in my future. Now to go to Tule Lake and shoot the eagles!. BTW picked Nikon over Canon because my partner has a D90 and we can share lenses and familiarity. Would have gone Canon if she had one. Would have rated this 5 but need more experience in the field.


This is a lot of lens


from Jersey Shore  -  Semi-pro Photographer

I just started using this lens and I love it. My main use for the lens is football and surfing. I have had the opportunity to use it for football and soccer,so far. I love the reach of the 500MM which I've never had with a 200MM. I like having the 50MM end for closeups on the bench and the stands. I have been using it on a Canon MarkII and it is very heavy. I mainly use it with a monopod which I use for most sports photography, and that worked well. I even used the 50MM end this morning for a scenic shot.The stabilization is a big plus especially with a lens this heavy and this slow. No complaints here. I'm looking forward to using it a lot. I returned a Canon lens to Adorama and ordered this one. After the exchange paperwork was completed and the order was submitted I received this lens in less then 48 hours. That's not bad either.


Unbeatable for the Price


from Okinawa, Japan  -  Semi-pro Photographer

This is my favorite lens to use for wildlife photography. It can get heavy, going long distances but, any lens that reaches the same focal length, will be heavy. Fast and sharp, auto focus, requires a sturdy tripod and it works best in good light. For wider aperature, in low light conditions, you'd have to but something more expensive.

(0 of 1 customers found this review helpful)


usage big ma


from nashua,nh  -  Photography Student

works well, is big and heavy. sharper than I expected.


Questions & Answers Powered by TurnTo®

Questions about this item:

James A  I have a Pentax K5-II how will this lens perform on this body? which funtions may I lose with it? Thanks
TED W  Sorry, I use it on a K-X. But I can tell you that with that camera, which has far fewer capabilities than yours, I have not had any problems.
Shopper  As a follow up on another question: Pentax mounts do not have an aperture ring. Some functions may not work depending on the camera model. Will this lens functions (the Sigma 50-500 f/4.5-6.3) all work with the Pentax K7? Thanks.
TED W  sorry, I have a K-X, so I can't speak to you K-7 Question. But I will tell you I've had great success with this lens.
James A  I have a Pentax K5-II how will this lens perform on this body? which funtions may I lose with it? Thanks
TED W  Sorry, I use it on a K-X. But I can tell you that with that camera, which has far fewer capabilities than yours, I have not had any problems.
See more questions and answers

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This is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma’s original Optical Stabilizer function.  This lens covers a wide range of focal lengths from 50mm to 500mm ultra telephoto.  

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