Flex 50mm f/2.8 Auto
Optical design
Bright lens thanks to the high aperture value Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle.Physical characteristics
With a lens filter diameter of 52 mm commonly filter size, presents numerous filter possibilities. Weights 167 grams so convinient to carry.Flex 50mm f/2.8 Auto purchase historyTrending up +2.4%/mo
Prices are firming up around 2.4% per month across 27 months of tracked sales — fair value today, not a guaranteed investment.
Best deals
1115 of 2223 tracked sales (50%) closed at or under the $156.00 fair value.
- May 26, 2025$5.00$-151.00 / typical
- May 31, 2025$5.00$-151.00 / typical
- Jul 22, 2025$6.00$-150.00 / typical
- Jul 23, 2025$6.00$-150.00 / typical
- May 26, 2025$9.00$-147.00 / typical
eBay Auctions
No active auctions found.
Technical Specifications
Similar Lenses
Reviews
Amazing Go-To lens for APSC I bought this lens to switch up the kit of primes I had to make it easier for travel. I sold the 30 mm sigma prime as I didn’t use it as much and now run this lens, the sigma 16mm and the Sony 70-300. The sigma trio is extremely sharp and some of the best lenses ever made. My issue was that I needed a zoom lens since switching lenses whilst traveling just wasn’t convenient. This sigma 18-50 is extremely light, yet remaining durability, and unbelievably sharp. I still own the 16 mm + 56mm prime as it is sharp and you can’t beat that f/1.4 that’s amazing for portraits and low light. If you’re looking to travel, this lens should be in your kit without thought along with the 56mm prime. You won’t regret it!
Great lens. I’m glad I bought the bundle... Great lens. I’m glad I bought the bundle, it made it so easy to get out there and take pictures and learn my new camera and lens.
Great little APS-C cropped lens. Range i... Great little APS-C cropped lens. Range is pretty good, and fixed aperture is great.
Frequently Asked Questions
What is the Flex 50mm f/2.8 Auto?
Flex 50mm f/2.8 Auto is a camera lens with 50mm focal length, a maximum aperture of f/2.8/16, for the M42 mount, supporting the Full frame format, weighing 167g.
What mount is the Flex 50mm f/2.8 Auto compatible with?
Flex 50mm f/2.8 Auto uses a M42 mount and supports the Full frame format.
How much does the Flex 50mm f/2.8 Auto cost?
Based on recent eBay sold listings the Flex 50mm f/2.8 Auto typically sells for around $5.00. Actual prices vary with condition and seller.
Is the Flex 50mm f/2.8 Auto a good lens?
Flex 50mm f/2.8 Auto has a community rating of 4.9/5 from 20 review(s).
Which lenses are similar to the Flex 50mm f/2.8 Auto?
Similar lenses include Carl Zeiss Jena Pancolar 50mm f/1.8, Carl Zeiss Ultron 50mm f/1.8 (Icarex 35), Isco-Gottingen Edixa ISCO-MAT 50mm f/1.9.