I just learned a new word: muustache distrortion :-) Thanks for the word and for mentioning PTLens, Rob. I must definitely try this. I often get distorted images after perspective corrections. I may try using PTLens for this, if possible?
Thands for posting this Derby. Nice work. BTW: I'd love to see the same thing done with a APS-sized digital, such as the *ist D or DS? Jens Bladt Arkitekt MAA http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Rob Studdert [mailto:[EMAIL PROTECTED] Sendt: 9. oktober 2005 04:16 Til: [email protected] Emne: Re: 15mm brick wall test On 9 Oct 2005 at 11:04, Derby Chang wrote: > > A little while ago, I saw a post about the performance of the K15mm wide > open. I went offline before I saw what the outcome of that discussion > was, but here's some shots from my sample. There's light falloff at 3.5, > but the corners are reasonably sharp. > > http://members.iinet.net.au/~derbyc/15mm/01.htm > > Not the most scientific of tests and I could have made better scans. But > there you go. I love this lens, just don't know how to use it very well > yet. It's a nice day, might go out and do some more shootin'. It is a great lens and it works quite well on the DSLRs too, my only criticism is that its inherent geometric distortion ("moustache" barrel in the centre tending to pin-cushion towards the edges) can make architectural shots look pretty wonky (technical term). Fortunately when digitized the distortion can be virtually negated using a re-mapping tool such as PTLens. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
