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Protect your purchase for longer.
Your camera ships with 6 months of coverage included. Extend it if you want professional photographer peace of mind.
Units sold for parts do not qualify for extended warranty.
View warranty terms and conditionsThe Pentax SMC Pentax-DA* 300mm f/4 ED [IF] SDM is a high-quality fixed telephoto lens designed for cameras with Pentax K mount. Released in 2008, it stands out for its constant maximum aperture of f/4, ideal for sports, nature, and portrait photography with blurred backgrounds. Its robust construction and weight of 1070 grams make it a professional tool for demanding sessions.
This lens incorporates an SDM ultrasonic motor that offers fast and silent autofocus, as well as internal focusing (IF) that keeps the lens length constant. It includes ED glass elements to correct chromatic aberrations and ensure excellent sharpness. As a second-hand product, it has been inspected and comes with a Camera Market warranty, offering a reliable option to expand your equipment.
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This new fast telephoto from Pentax is not only optically astounding but also supports the ultrasonic autofocus drive system for fast and quiet operation. Special optical glass including ED glass elements, aspherical lens elements and outstanding lens coating provide for excellent contrast characteristics, a consistent edge-to-edge sharpness and a particularly clear rendition of fine details. As well as the outstanding imaging attributes, PENTAX engineers have raised the mechanical characteristics of the lenses to a state-of-the-art level. Built-in ultrasonic motors (Supersonic Motors) in the lenses provide for extremely quiet and fast autofocusing. Both lenses are also weatherproofed and protected from penetrating dust by appropriate seals. The front lens elements of the lenses use the special Pentax SP - "Super Protect" - fluoride coating technology. This nano-technology protects the front lens against dust, finger marks or smearing, making the lenses exceptionally easy to clean. The Pentax "Quick Shift Focus System" allows the photographer to manually alter the focus point at will without having to take the camera out of the autofocus mode.
- Standard 6-month warranty
- 77mm Front Lens Cap
- Pentax PH-RBK77 Lens Hood
- Pentax S120-210 Lens Case
- Rear Lens Cap - K Fit
Does this lens have image stabilization?
No, the Pentax DA* 300mm f/4 does not incorporate optical stabilization. However, many modern Pentax cameras include in-body stabilization (SR), so you can benefit from it if your camera is compatible.
Is it suitable for sports or bird photography?
Yes, its 300mm focal length and f/4 aperture make it very suitable for capturing distant subjects such as birds, sports, or wildlife. The SDM autofocus is fast and silent, which helps track moving subjects.
What type of filters can I use?
The filter diameter is 77mm, a common size in professional lenses. You can use UV, polarizing, or neutral filters of that diameter to protect the lens or control light.
What is the minimum focusing distance?
The minimum focusing distance is 1.4 meters, allowing you to get relatively close to your subject, although it is not a macro lens. It is ideal for photographing details at a distance without disturbing the subject.
Full condition scale
Each unit is inspected at 28 points and graded honestly. Here's how we translate each level so you know what to expect:
Barely any signs of use. Almost flawless aesthetics and perfect operation.
Light marks from normal use. Optically clean and fully functional.
Visible signs of use (scuffs, marks, brassing). Works perfectly.
Not guaranteed for use: sold for parts or repair.
Why buy used?
Depreciation is already absorbed: the same gear for much less than new.
Many classics and discontinued gems only exist today on the used market.
28-point inspection and 6-month warranty included on every unit.
Extending the life of a camera avoids manufacturing and transporting a new one.




![Pentax SMC Pentax-FA 645 300mm f/4 ED [IF]](http://cameramarket.es/cdn/shop/files/AK-19-04-24-21854.jpg?v=1726915198&width=400)






