Sounds like he bought the 10-17....
My opinion is it's more fun...
And It may be just me, but I find that that's how things should look in extreme wide angles like 10mm... ;P
Before even considering between the 2 lenses, perhaps it might be a good idea to know the differences between them. The Pentax is a zoom fisheye whereas the Sigma is a rectilinear wide angle zoom.
Both might start at 10mm but the Pentax has a much wider field of view and being a fisheye, straight lines that don't pass thru the centre of the image appear curved. The Sigma is corrected, which means straight lines remain straight lines. The FE is a fun lens and you can correct the curvature effect by software but the rectilinear is more practical.
Either way, both lenses need careful composition because of the wide field of view.
So, did you buy the Sigma?
Actually I know the difference(having used the Sigma) but went out to buy the FUN one when I should consider buying something that is more useful for work.
Besides, it takes wonderful portraits too
http://www.eng8.nus.edu.sg/FileStorage/Frank/Photos/IMGP0644_s.jpg
The Pentax 10-17 is fun...and affordable too Get tired of the curvature can always de-fish the images to make them look rectilinear (but won't be as sharp as from a true rectilinear lens). Photoshop plugins like PTLens can do the job.
Fengwei, your pics never cease to amaze me..........
you had to be REALLLY close to take that... he didn't mind at all?
Hee, hee...
more like "sounds like SHE bought the 10-17"
10-20,
Unless you have a FE effect fetish.
Oh yeah, definitely less than 300mm :bsmilie: Actually he asked me to take that photo
And the DA1017 can focus as close as 140mm!