---
product_id: 1896653
title: "Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens"
brand: "pentax"
price: "158413CFA"
currency: XOF
in_stock: true
reviews_count: 5
url: https://www.desertcart.sn/products/1896653-pentax-21870-da-50-200mm-f-4-5-6-al
store_origin: SN
region: Senegal
---

# Quick-Shift Focus 4X zoom range Weather-resistant Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens

**Brand:** pentax
**Price:** 158413CFA
**Availability:** ✅ In Stock

## Summary

> 📸 Elevate Your Photography Game!

## Quick Answers

- **What is this?** Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens by pentax
- **How much does it cost?** 158413CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/1896653-pentax-21870-da-50-200mm-f-4-5-6-al)

## Best For

- pentax enthusiasts

## Why This Product

- Trusted pentax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Zoom Into Action:** Flexible 4X zoom coverage lets you get up close and personal with your subjects.
- • **Capture Every Moment:** Weather-resistant design ensures you never miss a shot, rain or shine.
- • **Focus with Precision:** PENTAX-original Quick-Shift Focus System allows seamless switching between autofocus and manual focus.
- • **User-Friendly Design:** Simple, functional design enhances operability and depth of field control.
- • **Crystal Clear Imagery:** Extra-low Dispersion glass and aspherical elements minimize distortion for stunning sharpness.

## Overview

The Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens is a versatile telephoto lens designed for photographers who demand performance in challenging conditions. With its weather-resistant build, 4X zoom capability, and advanced optical elements, this lens delivers exceptional image quality and user-friendly operation.

## Description

Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens

## Features

- Weather-resistant to handle damp, inclement conditions.
- Flexible 4X zoom coverage in the telephoto range.
- The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.
- An Extra-low Dispersion glass lens element and two aspherical lens elements offer superior sharpness with minimum chromatic and spherical aberration.
- Simple and functional design improves operability and body-based depth of field control.

## Product Details

- **Brand:** Pentax
- **Focal Length Description:** 50-200 millimeters
- **Lens Type:** Telephoto
- **Compatible Mountings:** Pentax KAF
- **Camera Lens Description:** 200 month

## Images

![Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens - Image 1](https://m.media-amazon.com/images/I/81To257NFuL.jpg)
![Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens - Image 2](https://m.media-amazon.com/images/I/51AMoakw9NL.jpg)
![Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens - Image 3](https://m.media-amazon.com/images/I/516FTCnSJRL.jpg)
![Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens - Image 4](https://m.media-amazon.com/images/I/413zuQE9n8L.jpg)
![Pentax 21870 DA 50-200mm F/4-5.6 AL Weather Resistant Lens - Image 5](https://m.media-amazon.com/images/I/41stbPP0buL.jpg)

## Questions & Answers

**Q: Will this lens work on the Samsung GX-10? (The GX-10 was made by Pentax)**
A: I know this question is 4 years old now, but I figured I would answer it for anyone who may have the same question. Firstly yes the Samsung GX-10 was a rebranded Pentax. In fact I believe it was built using K-10D hardware. This means it has a kaf2 autofocus system. This lens being a kaf system lens means it is compatible. I hope this helps for someone.

**Q: Is it weather sealed?**
A: You can verify the specifications online, but as I recall it is. I have shot with it during drizzle and light rain. It depends on your definition of "sealed" vs "weather resistant". I wouldn't go out in pouring rain - but that's me.

**Q: Is this lens compatible with the Pentax K50? I also need to know what size a polarizing filter would be to accompany this. Per earlier post, is there any update if the 55-300 is a lot better and worth the price? Thanks.**
A: This is compatible with any Pentax DSLR. It takes 49mm filters. I personally prefer this lens over the DA-L 55-300 due to the size and price. Having owned both IMO, the DA-L 55-330 is only marginally better optically and it is a LARGE lens. I haven't owned the new HD 55-300 so I cannot comment on that but I know it is more than twice the price. This lens is a steal for the price.

**Q: Can this be used on a Pentax film camera?**
A: The lens is designed to project its best image within a 16x24mm area for crop-sensor cameras. On full-frame, or film cameras you will also capture the less sharp, and darker area out to 36x24mm. Less perfection, but you might not hate the effect.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great lens for the amature photographer
*by J***M on August 31, 2013*

I am a advanced hobbyist photographer. I shoot RAW and manual at all times. This lens can certainly deliver in the sharpness realm. Colors are great! (but then again, pentax always nails the colors... just saying). I have not found any distortion or fringing in any of my images. Build quality is fantastic, feels very solid. It is much smaller than I was expecting, the same size of the 18-55wr. Pleasantly surprised! Very light weight... compact... tons of zoom! F4 is the fastest this lens gets, but normally I just leave it on 5.6 when I need maximum light. In bright light I leave it at f8 - f11 and boom, the lens really shines at these apertures. If you are in low light, use high iso, tripod, and slow down the shutter. If you can't do this try to use a flash.Fantastic lens, weather sealed, small, light weight, the price is right... buy this lens.

### ⭐⭐⭐⭐ Liking it better as I get to know it.
*by E***H on August 18, 2013*

My first experience with the Pentax DA 50-200 F/4-5.6 AL WR:"Wow, it's nice and light and compact for a lens that goes to 200mm, and the price was reasonable.""Hmm, seems like the focus is not very accurate in low light, especially at some distance."The latter problem (focus in marginal conditions) turned out to be my first generation K-5 SLR body, not the lens.My 2nd experience with the 50-200 was comparing it side-by-side in actual use with my friend's DA 55-300, which was on his K-7 body. We shot the same subjects at the same settings, both in raw, and imported them on the same computer. His images from the 55-300 were sharper (even when we put his lens on my camera body) and had a bit better contrast Shooting his 55-300 at 200 definitely looked better than my 50-200 at 200. In the 55 to 120mm (ish) range both lenses were pretty similar. So I'm thinking the 55-300 either has significantly better MTR charts or just has a lot more latitude since its performance doesn't begin to fall off as much until the upper third of its range -- which is simply a longer range so it's outside of the comparison.That 2nd experience left me a little flat, half wishing I'd purchased a 55-300 instead. But the 50-200 wooed me into keeping it with what seemed like better build quality, not as lightweight and plastic feeling.Eventually, over the next two years, I got in the habit of always bringing the 50-200 along when I go out with my main DA* 16-50, in case I see distant subjects that I want to try. I gradually warmed up to the lens as I learned how it responds better to different techniques in Lightroom when I'm post processing.The final, and most positive, note is that lately I've been really happy shooting closeups with this lens, such as flowers, bugs, and other subjects that are usually macro material. I don't have a macro lens yet and this has done a more than good enough job of taking that place in the meantime, with soft enough background blur in most conditions. The only drawbacks for that use, of course, are a rather long minimum focus distance (I think over 3 feet?) and lack of superfine focus-ring gearing compared to a true macro lens.Overall I would quite possibly buy this same item again, but to say that for sure I would probably be tempted to spend more time with a 55-300 or other competitors first.

### ⭐⭐⭐⭐⭐ Great versatility - Pentax DA50-200mm F/4-5.6 ED WR Lens/Pentax K7
*by R***R on July 3, 2010*

Folks,After much research and review reads, purchased the Pentax DA50-200mm F/4-5.6 ED WR Lens for use with Pentax K7 DSLR.Both items were bought from Amazon, and the service, shipping and quality were excellent, as has always been my experience.Now to the lens, lens is perfect for use along the Gulf coast in the high humidity, heat, rain environments. The lens is weather resistant, well constructed and sealed against the elements. Displays very high build quality overall and has excellent optics.The photos uploaded to Amazon demonstrate this lens performance at the extremes - macro and telephoto. The photos were taken with the new K7 Pentax DSLR. Very fast focus and great looking pictures. See for yourself by checking the uploaded sample photos.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-14*