My A20 is noticeably worse than the 21mm. DagT
Den 2. okt. 2006 kl. 20.44 skrev Michael Abbott: > Godfrey, > > I had some horizontal keystoning dialed in as well as the barrel > distortion. Looking at just the top line of bricks, I thought I saw > some moustache distortion after removing 2.6 )I think!) of barrel. > (This is in CS2). But you're right, it could just be a slightly wonky > wall. > > Do you have any idea how the 20/2.8 does? Bigger but not huge, and the > same price. > > Michael > > > > On 02/10/06, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: >> You're welcome. >> >> I couldn't shoot straight on to the wall as I was getting my >> reflection in the center window, so the distortion you're seeing is a >> combination of barrel distortion and keystoning from the angle I was >> shooting at. There's also probably a bit of off-axis tilt as well, it >> is a hand held shot. I've done a pass at correcting it by a sequence >> of changes... >> >> Of course, the old church is such that there are hardly any truly >> square lines anyway. I wouldn't panic based on this brick wall! >> >> But yes, the DA21 has a bit of barrel distortion. More than the DA14, >> but then the DA14 is intended, I think, as an ultrawide rectilinear >> for architectural work and *should* be nearly distortion free. The >> DA21 is more of a general purpose wide-angle lens ... I find the >> barrel distortion is only an annoyance on occasion. >> >> Godfrey >> >> On Oct 2, 2006, at 1:55 PM, Michael Abbott wrote: >> >>> Thanks for the test! Sharpness looks good, although I was really >>> hoping >>> there would be less distortion. I had a quick go at removing it >>> in PS, >>> and worse, it seems not to be the simple kind PS's lens distortion >>> slider can fix - is this true? >>> >>>> (dpreview http://tinyurl.com/rz89h linking to http://tinyurl.com/ >>>> s3g2u ) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
