Question 1

Is the Samyang 14mm f/2.8 ED AS IF UMC good for astrophotography?

Accepted Answer

Yes — it's one of the most popular budget astro lenses around. The f/2.8 maximum aperture lets in enough light for Milky Way shots with manageable ISO levels, and at 14mm you can use relatively long exposures before star trails appear (roughly 20–28 seconds on full-frame using the 500 rule). Because it's manual focus, you're not fighting an AF system in the dark — just set the ring to infinity and you're ready. Corner coma is present wide open, which is normal for lenses in this class; stopping down to f/4 tightens things up noticeably.

Question 2

Does the Samyang 14mm f/2.8 have autofocus on Sony cameras?

Accepted Answer

No — the Samyang 14mm f/2.8 ED AS IF UMC is a fully manual focus lens with no autofocus motor. There is no electronic communication with the camera body either, so EXIF data is not recorded automatically. For static subjects like landscapes, architecture, and night sky shots this is rarely a problem. Sony mirrorless bodies with focus peaking and magnified live view make manual focusing quick and reliable. If autofocus is essential for your workflow, look at the Samyang AF 14mm F2.8, which is a different, electronically coupled version.

Question 3

What's the difference between the Samyang 14mm f/2.8 ED AS IF UMC and the Rokinon 14mm f/2.8?

Accepted Answer

They are optically identical lenses — Rokinon is simply the name Samyang uses for the North American market (and sometimes vice versa depending on the retailer). The optical formula, aperture blades, build, and weight are exactly the same. If you find a used Rokinon 14mm f/2.8 IF ED UMC, you're looking at the same glass under a different badge.

Question 4

Does the Samyang 14mm f2.8 work on APS-C Sony cameras?

Accepted Answer

Yes, it works on APS-C Sony E-mount bodies. On an APS-C sensor the crop factor gives you an equivalent field of view of roughly 21mm, which is still a solid wide angle — great for landscape and street. You lose the dramatic ultra-wide feel you get on full-frame, but the lens is fully compatible and will cover the APS-C sensor without vignetting.

Question 5

Is buying a used Samyang 14mm f/2.8 for Sony worth it?

Accepted Answer

For the right shooter, absolutely. Because there are no autofocus motors or electronic contacts to degrade, second-hand copies of this lens hold up very well over time. The built-in petal hood also protects the protruding front element from bumps and dust. The main things to check on a used copy are smooth focus ring action and clear glass (no fungus or significant haze). All copies sold on Camera-tweedehands.nl come with a minimum 12 months warranty and have been individually inspected, so you're not buying blind.

Question 6

Can I use filters on the Samyang 14mm f/2.8 ED AS IF UMC?

Accepted Answer

Not with standard screw-in filters — the front element bulges outward and has no filter thread, which is typical for ultra-wide lenses at this focal length. but that's an additional investment. For astro work, clip-in filters that sit inside the camera body are a popular alternative.

Mount	Sony E
Focal range	Ultra Wide-Angle
Prime / Zoom	Prime
Focal length (min)	14 mm
Focal length (max)	14 mm
Max. aperture	f/2.8
Stabilisation
Weight (Grams)	555
Year of release	2016
Auto Focus

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Samyang 14mm f/2.8 ED AS IF UMC - Sony FE

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About the Samyang 14mm f/2.8 ED AS IF UMC - Sony FE

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Buying a used Samyang 14mm f/2.8 Sony FE

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