Originally posted by dreamfoto Samyang slaughters them all
Let me be the first to reply to this.......... I don't agree...... end of subject.
Ok, not enough explaination, I've seen the review from lenstip.com. It's good yes, but does it beat other Pentax lenses in this rough focal length. No. Does it beat the Sigma, maybe, depending on what you look for in a lens. Do other Pentax Lenses beat the Sigma, maybe, depending on what you look for in a lens. If you are looking at peak resolution numbers across the frame, the SY can't touch the Pentax offerings. If you are looking at wide open performance, SY is a damn good lens. If you are looking at CA, the SY is a damn good lens, but so are the pentax offerings. If you are looking at peak center performance only, the Sigma is damn good. If you are looking at build quality and size, leave everything else on the shelf and pick up a Pentax. There is more then one way to look at it.
For those looking for wide open performance across the frame at f1.4 to f1.6, get the SY.
For those looking for wide open performance across the frame at 1.8 or higher, get a Pentax.
For those looking for center performance at f1.4 or above, get the Sigma.
For those wanting auto-focus, don't buy a SY.
For those wanting a small well built lens, get a Pentax.
At least those are my opinions based on available reviews. As more surface, my opinion may change. Regardless, I won't be buying the SY any time soon as I do not currently require wide open performance at f1.4 for a 35mm lens. I have 50mm lenses that do wide open 1.4 just fine. If the need arises, I may reconsider the SY if the need arises in the future. Of course, other options may be available then as well.