EverydayGetaway wrote in post #17100366
Not only are they not the same aperture, they don't have similar optics, the Samyang's are better.
I can agree to an extent about quality control, though I don't think they're any worse than Sigma. Not sure what you're talking about for cheap interiors... they're made with some pretty high quality glass elements. Oh, and their 35mm and 85mm both match or better the Canon equivalent also, so I'm not sure what your point is. They also have several lenses nobody else offers (16mm f2, 10mm f2.8, 8mm f3.5) which are all very strong performers.
I was not comparing which brand is better. the thread is about why Samyang is missing af, which the op assumed would cost $, and still is not that cheap.
but....
1. quality control is ridiculous. just check the last big thread on the 14mm for $270. people have returned 3+ lenses of the same kind (I returned 2 before getting 1 good one.) and even the ones they kept had build problems that did not affect optics, so they kept the lenses.
2. google about various articles on taking these things apart. they are built very cheaply. the glass might be the only thing "high-quality" about these, but I guess that counts the most.
3. as for your 35mm, 85mm comment... I had no point about those. not sure what your own point is.
4. they have lenses others don't make. true. again, wasn't arguing Samyang vs canon.
5. and.... nothing about what you said, but it is worth noting that even lenses which people say are optically superb compared to canon counterparts, well.... not all of them are. like the 14mm. it has some crazy distortion that even the best profiles cannot completely eliminate (I tried many.) and it vignettes so badly that often, especially after correction, if you try to do HDR or up the shadows enough you will crazy noise/discoloration in the corners. just tradeoffs--you get sharpness at a cost. but yes, it's very sharp.
was just trying to answer the op's question. so to clarify what I wanted to say: yes, AF is expensive to engineer and produce. and yes, in my opinion, Samyang is way overpriced for what it is.