Summary: When using such the shallow depth of field that an f/1.4 lens offers, a manual-focus-only lens is a good reminder of just how useful autofocus is. Even a skilled photographer will find that there are numerous occasions when the manual focus is ‘off' in everyday images.
Samyang 24mm f/1.4 ED AS UMC (EOS) - Full Format Review
29 August 2012
Conclusion: It may be a bit embarrassing for the original manufacturers but the Samyang 24mm f/1.4 ED AS UMC manages to produce a quality similar to its roughly double priced counterparts. Admittedly, the 24mm f/1.4 suffers from slightly lower contrast at large apertures but the resolution is already pretty...
Summary: For the price, this Samyang 24mm f/1.4 offers a decent, budget introduction to fast aperture lenses. Although the sharpness delivered at f/1.4 may not be up to that delivered my manufacturer’s own lenses, it may still be usable for some applications, and it certainly costs a lot less too.
Pros: Very good value for the price, Excellent sharpness when stopped down, Good build, Good sharpness in the centre stopped down to f/2 or beyond
Cons: A little soft at f/1.4, Pronounced falloff at f/1.4