Re: DA14mm f/2.8 quality (was: Pentax 50mm News)
As some of you may remember I´ve had some contact with the guy testing the *istDs for the major Norwegian photo magazine. It is not published yet so I wont tell you what he says, except that he likes it a lot (especially after getting some help with the manual :-) However, he has also looked the 14mm (initially he was going to borrow mine), and I think I can tell you what he thinks about it: He thinks it is great (he used the word "formidable"), especially to the price. He found almost no distortion and very little vignetting, which are the two most important feature to me. Sharpness is from acceptable to razor sharp. He also likes the compact size and maximum aperture and concludes that he would buy one if he had Pentax. While I don´t agree with him about everything I know that he takes the reviews very seriously, so even if he didn´t have the 14mm in an optical bench (he did with the 18-55) I think his view is fairly accurate. He has a few interesting remarks regarding the Ds and the 18-55, but I´ll have to get back to them when the review is published. DagT På 26. jan. 2005 kl. 02.56 skrev Godfrey DiGiorgi: Interesting. At f/8, the DA14mm's aperture is less than 2mm in diameter where the FA16-45 is at 2mm or greater. Perhaps you're seeing the onset of diffraction, reducing the resolution. How do they compare at f/5.6? I normally set aperture between f/4 and f/5.6 with the 14mm. Godfrey --- Herb Chong <[EMAIL PROTECTED]> wrote: at f8, my DA 14 is uniformly sharp across the field, but noticeably less so than the DA 16-45 at f8. the DA 16-45 and FA* 80-200/2.8 are about equal to my eyes, and i expect that the FA* 28-70/2.8 to be about the same. Herb... - Original Message - From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]> To: Sent: Tuesday, January 25, 2005 8:08 PM Subject: Re: DA14mm f/2.8 quality (was: Pentax 50mm News) Less sharp ... in the center, at the edges, at what f/stops, etc, at what settings on the DA16-45? How are you comparing them? I find the DA14 satisfactorily sharp across the field wide open, but the corners are not as sharp as the center until f/4-5.6. Contrast is good throughout the range. Distortion seems to be very low. __ Do you Yahoo!? All your favorites on one personal page Try My Yahoo! http://my.yahoo.com
Re: DA14mm f/2.8 quality (was: Pentax 50mm News)
possibly. i usually need f11 for adequate DOF in my landscapes. OTOH, the DA 16-45 is consistently sharper in my use and i use the same range of apertures most of the time. Herb - Original Message - From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]> To: Sent: Tuesday, January 25, 2005 8:56 PM Subject: Re: DA14mm f/2.8 quality (was: Pentax 50mm News) Interesting. At f/8, the DA14mm's aperture is less than 2mm in diameter where the FA16-45 is at 2mm or greater. Perhaps you're seeing the onset of diffraction, reducing the resolution. How do they compare at f/5.6? I normally set aperture between f/4 and f/5.6 with the 14mm.
Re: DA14mm f/2.8 quality (was: Pentax 50mm News)
Interesting. At f/8, the DA14mm's aperture is less than 2mm in diameter where the FA16-45 is at 2mm or greater. Perhaps you're seeing the onset of diffraction, reducing the resolution. How do they compare at f/5.6? I normally set aperture between f/4 and f/5.6 with the 14mm. Godfrey --- Herb Chong <[EMAIL PROTECTED]> wrote: > at f8, my DA 14 is uniformly sharp across the field, but > noticeably less so > than the DA 16-45 at f8. the DA 16-45 and FA* 80-200/2.8 are > about equal to > my eyes, and i expect that the FA* 28-70/2.8 to be about the > same. > > Herb... > - Original Message - > From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, January 25, 2005 8:08 PM > Subject: Re: DA14mm f/2.8 quality (was: Pentax 50mm News) > > > > Less sharp ... in the center, at the edges, at what f/stops, > > etc, at what settings on the DA16-45? How are you comparing > > them? > > > > I find the DA14 satisfactorily sharp across the field wide > open, > > but the corners are not as sharp as the center until > f/4-5.6. > > Contrast is good throughout the range. Distortion seems to > be > > very low. > > > __ Do you Yahoo!? All your favorites on one personal page Try My Yahoo! http://my.yahoo.com
Re: DA14mm f/2.8 quality (was: Pentax 50mm News)
at f8, my DA 14 is uniformly sharp across the field, but noticeably less so than the DA 16-45 at f8. the DA 16-45 and FA* 80-200/2.8 are about equal to my eyes, and i expect that the FA* 28-70/2.8 to be about the same. Herb... - Original Message - From: "Godfrey DiGiorgi" <[EMAIL PROTECTED]> To: Sent: Tuesday, January 25, 2005 8:08 PM Subject: Re: DA14mm f/2.8 quality (was: Pentax 50mm News) Less sharp ... in the center, at the edges, at what f/stops, etc, at what settings on the DA16-45? How are you comparing them? I find the DA14 satisfactorily sharp across the field wide open, but the corners are not as sharp as the center until f/4-5.6. Contrast is good throughout the range. Distortion seems to be very low.
Re: DA14mm f/2.8 quality (was: Pentax 50mm News)
--- Herb Chong <[EMAIL PROTECTED]> wrote: > my DA 14 is noticeably less sharp than my DA 16-45, and that > is about the same as my FA* 80-200. i haven't shot enough yet with my FA* > 28-70, but given what i have seen from others, i expect it to be equally > good. Less sharp ... in the center, at the edges, at what f/stops, etc, at what settings on the DA16-45? How are you comparing them? I find the DA14 satisfactorily sharp across the field wide open, but the corners are not as sharp as the center until f/4-5.6. Contrast is good throughout the range. Distortion seems to be very low. This, to me, is expected behavior for such a short focal length, rectilinear lens. Godfrey __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo
