Re: Question about MC circular polarizers
Since one ideally uses a polarizer at a right angle to the sun, I have never been certain that adding coating to a polarizer accomplishes very much. I believe that Pentax does not add SMC coating to their polarizers, while they add SMC coating to nearly everything else that light goes through. Tiffens and Hoyas will usually give you good quality at a decent price. For coated filters I prefer Pentax, B+W, or Heliopan. Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
The purpose to applying an antireflection coating has nothing at all to do with the effects of a polarizing grid on light passing through it. Antireflection coatings reduce scatter at the air-glass interface, which causes flare. This is just as much a problem with a polarizing filter's surfaces as it is with any other optical surface. Godfrey On May 9, 2007, at 9:22 AM, Joseph Tainter wrote: Since one ideally uses a polarizer at a right angle to the sun, I have never been certain that adding coating to a polarizer accomplishes very much. I believe that Pentax does not add SMC coating to their polarizers, while they add SMC coating to nearly everything else that light goes through. Tiffens and Hoyas will usually give you good quality at a decent price. For coated filters I prefer Pentax, B+W, or Heliopan. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Question about MC circular polarizers
Hello! I have a few questions about Multi-Coated circular polarizers. I am considering buying one for my SMCP F-70-210/4-5.6, FA 50/1.4 and future D-FA100/2.8. For other lenses I am using BW 77E slim c-polarizer which works fine on my both Tokinas. The only problem I have with it is that it is so slim that I cannot use standart lens caps with it, and the cap it came with is a bit loose - so it doesn't stay on the filter attached to the lens. So, do you have any recommendations for a good quality polarizer that is not too expensive? Or even better - can you compare or point to a web-site that has comparison of different polarizer brands? If you have one that you've been considering to part with, - please let me know. Using the opportunity, - if you have any advice on the cap that will stay on my existing polarizer, - let me know. Thanks in advance to all your reponses! Igor -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
Don't get the slim version, get the standard. Slim versions of filters generally dispense with most if not all of the front mounted threads to help prevent vignetting with short focal length lenses, which isn't a problem with portrait to tele lenses. G On May 8, 2007, at 1:52 PM, Igor Roshchin wrote: I have a few questions about Multi-Coated circular polarizers. I am considering buying one for my SMCP F-70-210/4-5.6, FA 50/1.4 and future D-FA100/2.8. For other lenses I am using BW 77E slim c-polarizer which works fine on my both Tokinas. The only problem I have with it is that it is so slim that I cannot use standart lens caps with it, and the cap it came with is a bit loose - so it doesn't stay on the filter attached to the lens. So, do you have any recommendations for a good quality polarizer that is not too expensive? Or even better - can you compare or point to a web-site that has comparison of different polarizer brands? If you have one that you've been considering to part with, - please let me know. Using the opportunity, - if you have any advice on the cap that will stay on my existing polarizer, - let me know. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
On Tue, May 08, 2007 at 04:52:41PM -0400, Igor Roshchin wrote.. Hello! I have a few questions about Multi-Coated circular polarizers. I am considering buying one for my SMCP F-70-210/4-5.6, FA 50/1.4 and future D-FA100/2.8. For other lenses I am using BW 77E slim c-polarizer which works fine on my both Tokinas. The only problem I have with it is that it is so slim that I cannot use standart lens caps with it, and the cap it came with is a bit loose - so it doesn't stay on the filter attached to the lens. So, do you have any recommendations for a good quality polarizer that is not too expensive? Or even better - can you compare or point I own a Rodenstock C-polariser which works fine for me. Wilko -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
Yep. It is exactly why I bought the slim version: so that I can use it on Tokina 19-35 (yet with the film camera). It might have been an overkill, - but I definitely had no vignetting. :-) I am not looking for a slim version in this case: all the focal lengths are =50mm. Any recommendations on the brands? This is the part where I have no feel for the comparative quality (and quality/price ratio). Igor Tue May 8 16:59:53 EDT 2007 Godfrey DiGiorgi wrote: Don't get the slim version, get the standard. Slim versions of filters generally dispense with most if not all of the front mounted threads to help prevent vignetting with short focal length lenses, which isn't a problem with portrait to tele lenses. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
B+W makes the best polarizers, and their mounts, MRC coatings are state of the art. I wouldn't consider anything else. G On May 8, 2007, at 2:12 PM, Igor Roshchin wrote: Yep. It is exactly why I bought the slim version: so that I can use it on Tokina 19-35 (yet with the film camera). It might have been an overkill, - but I definitely had no vignetting. :-) I am not looking for a slim version in this case: all the focal lengths are =50mm. Any recommendations on the brands? This is the part where I have no feel for the comparative quality (and quality/price ratio). Don't get the slim version, get the standard. Slim versions of filters generally dispense with most if not all of the front mounted threads to help prevent vignetting with short focal length lenses, which isn't a problem with portrait to tele lenses. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Question about MC circular polarizers
On 2007-05-08, at 22:52, Igor Roshchin wrote: So, do you have any recommendations for a good quality polarizer that is not too expensive? Or even better - can you compare or point to a web-site that has comparison of different polarizer brands? If you have one that you've been considering to part with, - please let me know. Using the opportunity, - if you have any advice on the cap that will stay on my existing polarizer, - let me know. Try Marumi polarizers - either WPC or the newest DHG. Both has output thread despite being slim, so that you can put your ordinary lens cap on them without any problems. Their latest water and dirt repellent coatings are similar to B+W's MRC: http://www.marumi-international.com/english/filter_en/Web_en_Seiten/ 02_web_en_DHG.html I think new Pro 1 D filters from Hoya have output thread too, but I'm not sure, you have to check it before buy. http://www.hoyafilter.com/products/hoya/pro1d-01.html Both should be a good choice, and even if slightly worse than B+W, that is not a significant difference. -- Best regards Sylwek -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
