Re: 20 Pentax lenses tested on K20D by Chasseur D'images
I guess you always decline when the ask you to drop by for tea... Tim Øsleby wrote: Pooping in you own nest? Stupid thing to do. I prefer pooping in the neighbours well. MaritimTim 2008/5/22 AlunFoto [EMAIL PROTECTED]: 2008/5/21 Tim Øsleby [EMAIL PROTECTED]: Underexposing also gives more ISO noise, so this makes it a trade off situation between noise or fringing. Life ain't easy. The best thing is often to avoid the highlights. Life ain't easy. :-) In my opinion, the most salient point is as you say, to avoid the highlights. Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. I'd say the disposition of Fotozone looks unhealthy... :-) It is also worth noting that Fotozone have no mention of even considering the same properties for comparable lenses from Nikon and Canon. I've checked. And the sample photos does not include scenes where PF may emerge. Until the next test of a similar lens from the big two, I guess it's better to think that this property is something hitherto unknown to Fotozone, and that a DA* attached to a K10D from Pentax just happened to be the first lens/camera combo they made such considerations for. If they ignore PF testing for other brands in the future, however, they'll pretty much be as the ornithologist would say, pooping in their own nest. :-) Jostein -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
On 5/22/08, AlunFoto [EMAIL PROTECTED] wrote: ...Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. MARK! (oh wait, he's riding at the moment) STUNT-MARK! -Mat -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
RE: 20 Pentax lenses tested on K20D by Chasseur D'images
PS Take pictures. Stop reading. Mark! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Stenquist Sent: Thursday, May 22, 2008 22:49 To: Pentax-Discuss Mail List Subject: Re: 20 Pentax lenses tested on K20D by Chasseur D'images Where did Pentax fall short with the K20? Have you used it? It's a great camera. Have you used the DA* 200 or are you relying on the chicken-little internet sites? Those who have used it have nothing but good things to say about it. If you're going to read the nonsense you see on the web, you'll never be happy with any equipment. Take pictures. Stop reading. Paul -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
2008/5/21 Tim Øsleby [EMAIL PROTECTED]: Underexposing also gives more ISO noise, so this makes it a trade off situation between noise or fringing. Life ain't easy. The best thing is often to avoid the highlights. Life ain't easy. :-) In my opinion, the most salient point is as you say, to avoid the highlights. Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. I'd say the disposition of Fotozone looks unhealthy... :-) It is also worth noting that Fotozone have no mention of even considering the same properties for comparable lenses from Nikon and Canon. I've checked. And the sample photos does not include scenes where PF may emerge. Until the next test of a similar lens from the big two, I guess it's better to think that this property is something hitherto unknown to Fotozone, and that a DA* attached to a K10D from Pentax just happened to be the first lens/camera combo they made such considerations for. If they ignore PF testing for other brands in the future, however, they'll pretty much be as the ornithologist would say, pooping in their own nest. :-) Jostein -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
- Original Message - From: AlunFoto Subject: Re: 20 Pentax lenses tested on K20D by Chasseur D'images In my opinion, the most salient point is as you say, to avoid the highlights. Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. I'd say the disposition of Fotozone looks unhealthy... :-) It is also worth noting that Fotozone have no mention of even considering the same properties for comparable lenses from Nikon and Canon. I've checked. And the sample photos does not include scenes where PF may emerge. Until the next test of a similar lens from the big two, I guess it's better to think that this property is something hitherto unknown to Fotozone, and that a DA* attached to a K10D from Pentax just happened to be the first lens/camera combo they made such considerations for. If they ignore PF testing for other brands in the future, however, they'll pretty much be as the ornithologist would say, pooping in their own nest. :-) Or, they could just test Pentax lenses with backlit twigs and say look purple fringing, and not test the big two lenses that way and not mention it. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Bill, Do you, by any chance, see any guano at Fotozone from where you're standing? :-) Jostein 2008/5/22 William Robb [EMAIL PROTECTED]: - Original Message - From: AlunFoto Subject: Re: 20 Pentax lenses tested on K20D by Chasseur D'images In my opinion, the most salient point is as you say, to avoid the highlights. Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. I'd say the disposition of Fotozone looks unhealthy... :-) It is also worth noting that Fotozone have no mention of even considering the same properties for comparable lenses from Nikon and Canon. I've checked. And the sample photos does not include scenes where PF may emerge. Until the next test of a similar lens from the big two, I guess it's better to think that this property is something hitherto unknown to Fotozone, and that a DA* attached to a K10D from Pentax just happened to be the first lens/camera combo they made such considerations for. If they ignore PF testing for other brands in the future, however, they'll pretty much be as the ornithologist would say, pooping in their own nest. :-) Or, they could just test Pentax lenses with backlit twigs and say look purple fringing, and not test the big two lenses that way and not mention it. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Pooping in you own nest? Stupid thing to do. I prefer pooping in the neighbours well. MaritimTim 2008/5/22 AlunFoto [EMAIL PROTECTED]: 2008/5/21 Tim Øsleby [EMAIL PROTECTED]: Underexposing also gives more ISO noise, so this makes it a trade off situation between noise or fringing. Life ain't easy. The best thing is often to avoid the highlights. Life ain't easy. :-) In my opinion, the most salient point is as you say, to avoid the highlights. Or perhaps even better, to contemplate the psychologial implications of an unbendable urge to photograph backlit twigs at f/2.8. I'd say the disposition of Fotozone looks unhealthy... :-) It is also worth noting that Fotozone have no mention of even considering the same properties for comparable lenses from Nikon and Canon. I've checked. And the sample photos does not include scenes where PF may emerge. Until the next test of a similar lens from the big two, I guess it's better to think that this property is something hitherto unknown to Fotozone, and that a DA* attached to a K10D from Pentax just happened to be the first lens/camera combo they made such considerations for. If they ignore PF testing for other brands in the future, however, they'll pretty much be as the ornithologist would say, pooping in their own nest. :-) Jostein -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- MaritimTim -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
...as for psychological considerations, there is also the unbendable urge to consider any shortfalls of Pentax equipment as unfair testing, biased German/French/American/Tralfamadorian testers, bad sample, or oh-poor-me Pentax doesn't never gets a fair shake criticism. To demean pruple fringing as a problem that only occurs for the poor photog who shoots backlit twigs is to miss the point - purple fringing is well known in digital sensor testing - check Dpreview.com for many examples- so lack of mention for Canon and Nikon would indicate, duh, a lack of that problem on the lens/camera combos tested. I love Pentax, but long ago gave up the notion that they have the best lenses on planet urth. Whilst Pentax has many fine lenses and cameras, it is sad that they have a bad habit of falling short when there is no need to fall short, i.e., newly designed expensive cameras and lenses such as the K20 and DA* 200. But Pentax is not alone in lens shortfalls - consider how many recent DA-type lenses of all manufacturers (with reduced image circle) suffer from severe light falloff in the corners. What's with that? They have a smaller area to cover and can't make a design to cover it without significant (1 stop +) falloff? . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Hey John, Apologies for winding you up. It was just a poor attempt at poking fun of the situation. IMHO, Fotozone is *relatively* thorough in their tests and less unreliable than many. A lack of mention of PF in tests of lenses from the Big Two is either because Fotozone just started testing for PF, or because they're biased. I can't think they could be particularly in disfavour of Pentax, though. Just more in favour of whoever has the higher market share, I guess. After all, owners of those brands would be the higher portion of their readers. And I also think the jury is still out as to their bias. Now that they've raised the issue of PF, it would do everyone good if they continued to discuss this property for all brands. Just one sentence remarking that they didn't find any would be infinitely more clarifying than no mention at all, as it is today. I agree with you that PF is very real. I disagree with you in thinking that current lack of mention in tests of other than Pentax is proof that this is nonexistent with other brands. If, at the end of the day, some of your real keepers (for other reasons) show PF, then it's time to walk the walk through the post processing. With the DA*, you'll have an easier job than with the FA* 200. I'm not at all sure that your raw files would be better with a different brand of DSLR. Best, Jostein 2008/5/22 John Mustarde [EMAIL PROTECTED]: ...as for psychological considerations, there is also the unbendable urge to consider any shortfalls of Pentax equipment as unfair testing, biased German/French/American/Tralfamadorian testers, bad sample, or oh-poor-me Pentax doesn't never gets a fair shake criticism. To demean pruple fringing as a problem that only occurs for the poor photog who shoots backlit twigs is to miss the point - purple fringing is well known in digital sensor testing - check Dpreview.com for many examples- so lack of mention for Canon and Nikon would indicate, duh, a lack of that problem on the lens/camera combos tested. I love Pentax, but long ago gave up the notion that they have the best lenses on planet urth. Whilst Pentax has many fine lenses and cameras, it is sad that they have a bad habit of falling short when there is no need to fall short, i.e., newly designed expensive cameras and lenses such as the K20 and DA* 200. But Pentax is not alone in lens shortfalls - consider how many recent DA-type lenses of all manufacturers (with reduced image circle) suffer from severe light falloff in the corners. What's with that? They have a smaller area to cover and can't make a design to cover it without significant (1 stop +) falloff? . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
- Original Message - From: Tim Øsleby Subject: Re: 20 Pentax lenses tested on K20D by Chasseur D'images Pooping in you own nest? Stupid thing to do. I prefer pooping in the neighbours well. I prefer tossing maggot infested carcases over their walls. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Where did Pentax fall short with the K20? Have you used it? It's a great camera. Have you used the DA* 200 or are you relying on the chicken-little internet sites? Those who have used it have nothing but good things to say about it. If you're going to read the nonsense you see on the web, you'll never be happy with any equipment. Take pictures. Stop reading. Paul On May 22, 2008, at 3:48 PM, John Mustarde wrote: ...as for psychological considerations, there is also the unbendable urge to consider any shortfalls of Pentax equipment as unfair testing, biased German/French/American/Tralfamadorian testers, bad sample, or oh-poor-me Pentax doesn't never gets a fair shake criticism. To demean pruple fringing as a problem that only occurs for the poor photog who shoots backlit twigs is to miss the point - purple fringing is well known in digital sensor testing - check Dpreview.com for many examples- so lack of mention for Canon and Nikon would indicate, duh, a lack of that problem on the lens/camera combos tested. I love Pentax, but long ago gave up the notion that they have the best lenses on planet urth. Whilst Pentax has many fine lenses and cameras, it is sad that they have a bad habit of falling short when there is no need to fall short, i.e., newly designed expensive cameras and lenses such as the K20 and DA* 200. But Pentax is not alone in lens shortfalls - consider how many recent DA-type lenses of all manufacturers (with reduced image circle) suffer from severe light falloff in the corners. What's with that? They have a smaller area to cover and can't make a design to cover it without significant (1 stop +) falloff? . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Yes all in the same issue dated from June so it just went out. I posted a summary of their findings in that thread, for each tested lenses: http://www.pentaxforums.com/forums/everything-else/27942-chasseur-d-images-test-20-pentax-lenses-k20d.html I dunno if it is possible to buy it from other countries although I will hapilly send my copy to anyone who wants it: I just bought because of those tests and the interest it would generate for you PDML guys :). -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
In Barcelona is quite easy to find the magazine, actually they advertise as the most sold in Europe and the price is stated for several countries in the cover. I don't have any copy with me now to look at the list of countries, perhaps Thibouille...? Regards, Jaume - Mensaje original De: Thibouille [EMAIL PROTECTED] Para: Pentax-Discuss Mail List pdml@pdml.net Enviado: miércoles, 21 de mayo, 2008 11:36:35 Asunto: Re: 20 Pentax lenses tested on K20D by Chasseur D'images Yes all in the same issue dated from June so it just went out. I posted a summary of their findings in that thread, for each tested lenses: http://www.pentaxforums.com/forums/everything-else/27942-chasseur-d-images-test-20-pentax-lenses-k20d.html I dunno if it is possible to buy it from other countries although I will hapilly send my copy to anyone who wants it: I just bought because of those tests and the interest it would generate for you PDML guys :). -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. __ Enviado desde Correo Yahoo! La bandeja de entrada más inteligente. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
John, Pentax Norway graciously let me test the FA* 200 against the DA*200 earlier this spring. The DA sharpness is on par or better than the FA, and so is contrast. I looked particularly for colour defects, and as far as I could see, the DA has a different approach to correction for different wavelengths. In the classic twig-against-bright-background situation that Fotozone whines about, I found the following (using K10D): The FA is less prone to the classic PF, BUT! The general optimization for colour aberrations in different in the two lenses. With the FA* they've tried a trade-off optimization, trying to bring all wavelengths *almost* into focus. With the DA*, they've corrected 100% for green, and let the red and blue wander off a bit. The result is that wherever you get other kinds of colour aberrations, it manifests in both green and purple with the FA, but only in purple with the DA. So the classic twigs will have alternating green and purple edges to them when shot with the FA, but only purple edges with the DA. The latter is far much easier to correct in post-processing. Also, it is worth noting that if you underexpose slightly, and then lift the shadows in post-processing, the DA looks far better. I think this is because most of the fringing for the colour purple is caused by the sensor anyway, and can be avoided by this technique. Further, it is also worth noting that the colour fringing happens at large apertures. Stop down to f/5.6 and it's all gone on both lenses. At f/4 it's already much better than f/2.8. I'd say the DA* is a step forward in lens design over the old FA*. Jostein 2008/5/20 John Mustarde [EMAIL PROTECTED]: I'm curious - what is a centering defect Photozone shows a flaw in the DA* 200 - purple fringing. Bad enough for me to avoid it. Unfortunately the DA* 200mm f/2.8 has quite a problem regarding purple fringing. Purple fringing is a blooming effect that occurs at extreme contrast transitions. The camera sensor has surely a few stakes in here but the effect is also dependent on the lens. . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
2008/5/21 AlunFoto [EMAIL PROTECTED]: Also, it is worth noting that if you underexpose slightly, and then lift the shadows in post-processing, the DA looks far better. I think this is because most of the fringing for the colour purple is caused by the sensor anyway, and can be avoided by this technique. Jostein I think that's a very good point Jostein. Pretty obvious when you study a picture with strong highlights, but easily forgotten. But. :-( Underexposing also gives more ISO noise, so this makes it a trade off situation between noise or fringing. Life ain't easy. The best thing is often to avoid the highlights. MaritimTim -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
20 Pentax lenses tested on K20D by Chasseur D'images
Anyone owning a K20D should buy this magazine IMO. Lots of optics tested here: from FA* 27-70/2.8, FA*85/1.4 to all Limiteds, DA*, the new DA17-70 SDM etc... Most lenses are quite good and a couple numbers simply excellent !! Talking about recent lenses: - DA 17-70 SDM: it is good, vingettes a lot at 17 but it very nice upgrade over the kit lens. They say there's no focus touch up (!! to be confirmed) but there's indeed weather sealing. They do not say if it is SDM-only but I think so. - DA*200/2.8: excellent !! - DA*300/4: excellent !! - DA35/2.8 macro: excellent ! DA* 50-135 and DA* 16-50/2.8: centering defects but otherwise very good. A lot more lenses tested, you should really buy this magazine. More when I can buy one. -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
I'm curious - what is a centering defect Photozone shows a flaw in the DA* 200 - purple fringing. Bad enough for me to avoid it. Unfortunately the DA* 200mm f/2.8 has quite a problem regarding purple fringing. Purple fringing is a blooming effect that occurs at extreme contrast transitions. The camera sensor has surely a few stakes in here but the effect is also dependent on the lens. . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Two comments: 1/ Photozone seem to be the only one to find that much fringing, other report very acceptable fringing 2/ it probably is more sensor blooming which means it is a K10D sensor problem and not a lens problem. Remember those test come from a K20D not a K10Dn and this is *much* different. -- Thibault Massart aka Thibouille -- Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... Thinkpad: X23+UB,X60+UB Programing: D7 user (trying out D2007) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
You can induce purple fringing with any lens on a digital sensor. Just shoot dark branches against a white sky. It never fails. It's unavoidable, and it's no reason to dismiss this lens. I expect the FA 200 would fringe even more. In fact, based on experience with other earlier lenses, I'm sure it would. Paul -- Original message -- From: John Mustarde [EMAIL PROTECTED] I'm curious - what is a centering defect Photozone shows a flaw in the DA* 200 - purple fringing. Bad enough for me to avoid it. Unfortunately the DA* 200mm f/2.8 has quite a problem regarding purple fringing. Purple fringing is a blooming effect that occurs at extreme contrast transitions. The camera sensor has surely a few stakes in here but the effect is also dependent on the lens. . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
Thibault, are these lens tests all in one issue? Can you post instructions how to order a copy? I can read enough Francais to make my way through the tests, or through an ordering page for the issue. Thanks, Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 20 Pentax lenses tested on K20D by Chasseur D'images
On Wed, May 21, 2008 at 12:41:40AM +, [EMAIL PROTECTED] wrote: You can induce purple fringing with any lens on a digital sensor. Just shoot dark branches against a white sky. Or a fluorescent tube against a dark background ... Paul -- Original message -- From: John Mustarde [EMAIL PROTECTED] I'm curious - what is a centering defect Photozone shows a flaw in the DA* 200 - purple fringing. Bad enough for me to avoid it. Unfortunately the DA* 200mm f/2.8 has quite a problem regarding purple fringing. Purple fringing is a blooming effect that occurs at extreme contrast transitions. The camera sensor has surely a few stakes in here but the effect is also dependent on the lens. . -- John Mustarde Paris, TX -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
