--- product_id: 1153701 title: "Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera" brand: "sigma" price: "275.46 DT" currency: TND in_stock: false reviews_count: 11 url: https://www.desertcart.tn/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg store_origin: TN region: Tunisia --- # Hyper-Sonic Motor for fast, quiet autofocus 10x ultra telephoto zoom Optical Stabilization for sharp handheld shots Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera **Brand:** sigma **Price:** 275.46 DT **Availability:** ❌ Out of Stock ## Summary > 🔍 Zoom into greatness — see what others miss with Sigma’s ultimate telephoto lens! ## Quick Answers - **What is this?** Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera by sigma - **How much does it cost?** 275.46 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg) ## Best For - sigma enthusiasts ## Why This Product - Trusted sigma brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Whisper-Quiet Autofocus:** Hyper-Sonic Motor ensures lightning-fast, silent focusing, ideal for discreet shooting in professional or natural settings. - • **Massive 50-500mm Zoom Range:** Capture everything from sweeping landscapes to distant wildlife with a versatile 10x zoom that transforms your Pentax DSLR into a powerhouse telephoto rig. - • **Built for the Serious Shooter:** Robust build with tripod collar included for comfortable handling of this 4.3-pound beast—designed to keep up with your demanding creative vision. - • **Steady Shots Anywhere, Anytime:** Optical Stabilization technology lets you shoot crisp, blur-free images handheld—even in low light—so you never miss that perfect moment. - • **Crystal-Clear Color & Sharpness:** Four Special Low Dispersion glass elements minimize chromatic aberration, delivering vibrant colors and razor-sharp detail across the entire zoom range. ## Overview The Sigma 50-500mm f/4.5-6.3 APO DG OS HSM lens for Pentax DSLR cameras offers an impressive 10x zoom range (75-750mm equivalent on APS-C), combining advanced optical stabilization and a Hyper-Sonic Motor for fast, quiet autofocus. Featuring 4 Special Low Dispersion glass elements, it delivers sharp, high-contrast images across diverse shooting scenarios—from wildlife to sports. Weighing 4.34 pounds and equipped with a tripod collar, this lens balances versatility and professional-grade performance for serious photographers. ## Description The 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. This 50-500mm lens is designed for use with Pentax DSLR cameras--with an APS-C-sized sensor, the effective zoom range is approximately 75-750mm in 35mm equivalent. Note: The Pentax mount tele converter cannot be used with this lens. 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 digital SLR cameras, including cameras with APS-C size sensors with an effective focal length of about 75 to 750mm. OS System (Optical Stabilization) allowing handheld photography even in low-light situation HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus Review: Power - I may not really NEED this versatility, and it may be a tad cumbersome for frequent use, but I got what I wanted when I bought it. This thing has hundreds of reviews and all I can contribute is that I got a good copy that works great. Review: Impresive - I'm using this lens with Pentax K-x mainly for Birding. This lens is great, it is produce a great results. For it is price, I think it is a great deal and I recommend it. Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Canon Digital DSLR Camera ## Features - Sigma 50-500mm f/4.5-6.3 DG OS HSM APO Lens - Pentax ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003A6H2JS | | Best Sellers Rank | #664 in Digital Camera Accessory Kits #3,446 in SLR Camera Lenses | | Brand | Sigma | | Camera Lens | 500 millimetres | | Camera Lens Description | 500 millimetres | | Color | Black | | Compatible Camera Models | Pentax KAF3, Pentax mount | | Compatible Camera Mount | Pentax KAF3 | | Compatible Mountings | Pentax KAF3 | | Customer Reviews | 3.9 out of 5 stars 40 Reviews | | Exposure Control Type | Manual | | Focal Length Description | 50-500 millimeters | | Focus Type | Ring-type ultrasonic | | Global Trade Identification Number | 00085126738617 | | Image stabilization | 4 stops claimed^normal and panning modes | | Item Part Number | 738961 | | Item Weight | 1970 Grams | | Lens | Telephoto | | Lens Coating Description | Super Multi-Layer Coating | | Lens Design | Zoom | | Lens Fixed Focal Length | 500 Millimeters | | Lens Mount | Pentax K | | Lens Type | Telephoto | | Manufacturer | Sigma Corporation of America | | Manufacturer Part Number | 738306 | | Maximum Aperture | 6.3 f | | Maximum Focal Length | 500 Millimeters | | Media Type | ProductImage, EnhancedContent | | Minimum Aperture | 32 | | Minimum Focal Length | 50 Millimeters | | Model Name | Sigma 50-500mm f/4.5-6.3 APO DG OS HSM | | Model Number | 738109 | | Number of Diaphragm Blades | 9 | | Photo Filter Size | 95 Millimeters | | Real Angle Of View | 46.8 Degrees | | Screen Size | 3 Inches | | UPC | 085126738617 | | Unit Count | 1.0 Count | | Water Resistance Level | Not Water Resistant | | Zoom Ratio | 10:1 | ## Product Details - **Brand:** Sigma - **Camera Lens Description:** 500 millimetres - **Compatible Mountings:** Pentax KAF3 - **Focal Length Description:** 50-500 millimeters - **Lens Type:** Telephoto ## Images ![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 1](https://m.media-amazon.com/images/I/71bN-tiv4hL.jpg) ![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 2](https://m.media-amazon.com/images/I/31rJ4oEHMGL.jpg) ![Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Pentax Digital DSLR Camera - Image 3](https://m.media-amazon.com/images/I/91Ljr5OIHTL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is this a great lens to bring on safari? Is it too cumbersome? I have a nikon D810. Thank you in advance for your feedback! I appreciate your help.** A: YES, Here is why. This is my most used lens. I am on my second one in well over 10 years.. It takes very good pictures. It is reasonable fast. I certainly would NOT use it for portraits . or high-end magazine shoots. It is very heavy and large. I carry it with a shoulder strap While riding a motorcycle at speeds as slow as 5 PPH and as fast as 80 MPH+ , I have won a a few Armature contests with some of my in motion pictures, i Took while flying down the road on my motorcycle, in the white mountains, and on the Tail of the Dragon. as well as the Swiss Alps and most of Europe. Again, for the money and the ability to get pictures at a very long distance, It is worth the money...If you can handle the weight on your shoulder. AGAIN. This is NOT a high quality portrait lens. And it is HEAVY, So do not plan an all day shoot unless you can take the weight on your shoulder. **Q: I have a Nikon D5100 will this work on my camera ?** A: Yes but keep in mind the DX Sensor will give you a field of view 75mm-750mm. I use it on my D3s and D800 - it's focus is very zippy almost as fast as my 70-200mm VR1 - The HSM (Hypersonic Motor) will work with your D5100 since your camera body does not have a built-in focus motor. **Q: will it work on a Canon 70D?** A: Presuming that you order this lens with a Canon mount, it is my belief that it would work with a Canon 70D. I own this lens and have used it both on my Canon 5DIII and my Canon 7DII. However, I think Sigma's 150-600mm F5-6.3 Contemporary is a better lens for a variety of reasons. If you could afford the Sports version, even better, but if you were spending that much you might want to think about a Canon 100-400 (newest version) and a 1.4 teleconverter. I have not been happy with the Sigma 50-500. At the 50 end it is useless for all intents and purposes. At the opposite end, the lens is generously called 500mm. It is my impression that its maximum range is around 470mm. Also, it is built on older technology than the 150-600. Its autofocus is slow and when you move to the larger magnifications you quickly step up to higher F-stops where the ability of the lens to focus quickly is even more limited. That said, I have seen some great photos taken with this lens, but that is not an experience I have had. A final note, Canon is reported to be releasing a 200-600 non-L lens in 2017 that will be priced below the new 100-400L. If you can wait, this might be a solution for you. **Q: Is this lens 740.00 better than the Sigma 150-500 lens** A: For me, I have preferred it over 150-500 as it starts from 50mm rather than 150mm. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Power *by N***D on June 24, 2015* I may not really NEED this versatility, and it may be a tad cumbersome for frequent use, but I got what I wanted when I bought it. This thing has hundreds of reviews and all I can contribute is that I got a good copy that works great. ### ⭐⭐⭐⭐⭐ Impresive *by S***D on June 18, 2012* I'm using this lens with Pentax K-x mainly for Birding. This lens is great, it is produce a great results. For it is price, I think it is a great deal and I recommend it. Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Canon Digital DSLR Camera ### ⭐⭐⭐⭐⭐ great multi purpose lens.. *by J***B on November 18, 2012* very clear and relatively fast zoom.. great quality will definitely be buying more Sigma products... it i everything it was shown to be.. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg](https://www.desertcart.tn/products/1153701-sigma-50-500mm-f-4-5-6-3-apo-dg) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-05*