Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax K

Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax K

Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax K

B&H # SI505004563P MFR # 738109
No Longer Available

Product Highlights

  • Pentax K-Mount Lens/Full-Frame Format
  • Optical Stabilization for Sharp Photos
  • Quiet & High-Speed Auto Focus
  • SLD Glass for Optimum Color Correction

Sigma 50-500mm f/4.5-6.3 overview

  • 1Description

Do you really need more than 1 lens? Maybe not--this Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax covers a lot of ground. The 10x zoom can be used on everything from landscape and portrait photos to sports action and wildlife photography. It uses 4 Special Low Dispersion (SLD) glass elements for optimum color correction and sharpness through the entire zoom range, and a Hyper-Sonic Motor (HSM) provides quiet and high-speed auto focusing. The Optical Stabilization (OS) system allows you to use the lens even off a tripod to capture sharp, clear photos. 

Note: Pentax mounts do not have an aperture ring--some functions may not work depending on the camera model.

Note: 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.

Note: When using the OS function of a lens with a camera which incorporates a stabilizer unit, please turn the camera's stabilizer unit off.

10x high zoom, ultra telephoto zoom lens
Designed for use with full-frame DSLR cameras, however can also be used with APS-C models where it will provide a 75-750mm equivalent focal length range
OS System (Optical Stabilization) allowing handheld photography even in low-light situation
HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus
Four SLD (Special Low Dispersion) glass elements provide optimum color correction & sharpness throughout the entire zoom range
In the Box
Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax K
  • Front and Rear Lens Caps
  • Tripod Collar
  • Case
  • Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects.
  • Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects.
  • Table of Contents
    • 1Description

    Sigma 50-500mm f/4.5-6.3 specs

    Focal Length 50 - 500mm
    Aperture Maximum: f/4.5 - 6.3
    Minimum: f/22
    Camera Mount Type Pentax K
    Format Compatibility 35mm Film / Full-Frame Digital Sensor
    Angle of View 46.8° - 5.0°
    Minimum Focus Distance 1.64' / 49.99 cm
    Maximum Reproduction Ratio 1:3
    Optical Design 22 Elements in 6 Groups
    Diaphragm Blades 9
    Image Stabilization Yes
    Autofocus Yes
    Tripod Collar Yes
    Filter Thread 95 mm
    Dimensions (DxL) 4.1 x 8.6" / 10.41 x 21.84 cm
    Weight 4.33 lb / 1.96 kg
    Packaging Info
    Package Weight 6.2 lb
    Box Dimensions (LxWxH) 11.0 x 6.9 x 6.9"

    Sigma 50-500mm f/4.5-6.3 reviews

    50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax K is rated 4.6 out of 5 by 18.
    Rated 5 out of 5 by from Better than expected I have been looking for a Sigma 50-500mm for a while as I experienced good results with an older Sigma 170-500 but wanted something that could go wider. The Bigma performs better than the older 170-500, it seems sharper at the long end and the resolution holds up to cropping well. Best results seem to be at f8-f11 when at 500mm. From my initial testing it is just as good at 500 as it is at lesser focal ranges. A slight bit of purple fringe can show up in high contrast areas but is easy to correct in post processing. The Sigma OS gives better results than my Pentax K-5 in body SR.
    Date published: 2013-01-02
    Rated 5 out of 5 by from Great lens I absolutely love this lens!!! It has opened up a whole new world for me to photograph. I now can get realitively good shots across the soccer pitch and get up close and personal with wild life that was never possible until now. I know this isn't a prime, and in heavily wooded areas you really need a tripod, but the BANG for the BUCK was tremendously worth it. Oh, this was my Christmas gift from my Fiance, so that even makes it better. We call it the Casie lens. I am still learning how to use it but hopefully by the end of March I'll be ready for the High Island Migration season here in Texas.
    Date published: 2013-02-26
    Rated 5 out of 5 by from GREAT LENS I have wanted a long lens for wildlife for several years. I finally broke down and purchased the Sigma 50-500 for my Pentax K-7. It is big and heavy, but it is very clear at all lengths. Easy to use. I especially like the manual focus override. I am worried about dust and rain, so I will be getting it a rain/dust coat I have never owned a Sigma lens before. All of mine have been Pentax or Tamron. I am very impressed with the quality. This will not be my last Sigma lens. If you want a verstile, long range lens, this is the one.
    Date published: 2012-06-06
    Rated 5 out of 5 by from Sigma Bigma absolutely awesome lens...i sat on the fence for a month before i got it and wish i had done it takes wonderful pictures..focuses is somewhat heavy as you would expect but not horrible...i am using it with my pentax k5 and with the aperature and shutter priority feature i have been able to take some amazing nature shots..if pentax offered other choices i might have gone a different route but i couldn't be more pleased with the quality and what you get for your $. Buy won't be disappointed.....
    Date published: 2011-06-06
    Rated 3 out of 5 by from Good results when used correctly This is not a lens that can be easily handheld or carried. It is a lens to be taken on excursions devoted to photographing subjects that are appropriate for the long reach of the lens. It is too heavy and bulky to carry in the field on extended hikes just in case you might find a use for it. It needs a sturdy tripod designed to handle the full weight of the lens/camera combination. The lens has a lock to address the lens creep problem. But the lock is poorly designed. To engage the lock I have to retract the lens all the way. But in that position, the lock will not engage. It is necessary to back the lens off ever so slightly before the lock will operate. Thus what should be a simple one handed action becomes a complex two-handed proposition. I contacted Sigma customer support; they told me that all the lenses work this way. In my mind this is a serious design defect. That said, the lens has given me some truly wonderful and amazing photos. Just don't expect great results on little far away birds when using it handheld.
    Date published: 2013-12-15
    Rated 5 out of 5 by from Great Lens, the search is over. This is my third Sigma zoom lens. And this 50-500mm is a keeper! The prior lenses were 135-400mm and 120-400mm. The 50-500mm blows the others out of the water. The focus is much faster and a lot less searching. And the focus is correct with no in camera compensation (Pentax K-3). The images you take with this lens are impressive. Everyone else's examples of focus and image sharpness are true and factual. I do not do any post processing with the only exception of bringing out highlights in darker scenes (not a lens issue). This works fine for macro photos, although you are standing several feet from the subject. I shoot photos at 500mm hand held using rapid multi shots, cause they are not all going to be steady. I highly recommend this. Skip the others and save your money for this one. The build quality is great. The only negative is the weight of this lens, but I hand hold it for hours on end. I do use the lens strap for support when walking.
    Date published: 2014-06-09
    Rated 5 out of 5 by from Sigma 50-500 lens isa winner This lens has filled my need for a longer reach, it is so versatile. Going from 50mm to 500mm without having to change lenses is awesome. I have been using it to capture eagles in flight with excellent results. Focus is fast and quiet and you can easily zoom in or out to frame your shot. The only drawback is the weight, but then exercise is good for you. I love it.
    Date published: 2013-03-11
    Rated 5 out of 5 by from Super Zoom for Super Shots I was shopping for a versatile long range zoom lens when I stumbled onto Sigma's 50-500 lens. No one else offered a similar product and the price seemed alright. The lens took a little bit getting used to. it is on the heavy side so shooting free hand can be difficult. I use a monopod to overcome this problem. When stationary the monopod offers a solid platform to take amazing shots. I have since discovered that the collapsed monopod acts as a stabilizer when shooting moving targets such as birds in flight or aircraft. The lens focuses very quickly. The lens' sweet spot is between 200 and 300mm but the results outside this range are still very good and deliver very detailed photos. Given that when used with a C-sized frame camera the actual range is 75-750mm it is an extreme telephoto lens for a very reasonable price. The only thing I don't like about this lens is the lock. One has to retract the lens all the way for it to work. This is my workhorse lens which is always attached to my camera when I go shooting. As for my pro friends who didn't like the lens at first because it wasn't a name brand lens have since changed their tune.
    Date published: 2014-03-15
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