RE: Lenses fogging over
> > It seems that my PFA 50/1.4 is a lot more likely to fog over, > especially when brought in from the cold, than any other lens I have. > > Tonight, it was fogging over at the slightest provocation, > making it tough to get sharp pictures. Does anyone else have > similar problems with any lenses? Is there anything that can > be done? Put a UV filer on it so there isn't as much > moisture next to the front element to condense on it? > Putting a filter on usually makes it worse, in my experience. I suspect it's because the air between the front element and the rear of the filter is slightly warmer than the air outside, so the moisture condenses on the front of the filter. Bob -- 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: Lenses fogging over
I would suspect that it contains less plastic and hence takes longer to adapt to temperature changes (maybe also more glass where it hurts, i.e. front element?) so there is probably very little you can do about it :( cheers ecke 2010/1/9 Larry Colen : > It seems that my PFA 50/1.4 is a lot more likely to fog over, especially > when brought in from the cold, than any other lens I have. > > Tonight, it was fogging over at the slightest provocation, making it tough > to get sharp pictures. Does anyone else have similar problems with any > lenses? Is there anything that can be done? Put a UV filer on it so there > isn't as much moisture next to the front element to condense on it? > > -- > Larry Colen l...@red4est.com sent from i4est > > > > > > -- > 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: Lenses fogging over
On Sat, Jan 09, 2010 at 09:40:15AM -, Bob W scripsit: > > It seems that my PFA 50/1.4 is a lot more likely to fog over, > > especially when brought in from the cold, than any other lens I have. My worst one for this is the FA100 macro; it's an aluminium brick, and has a lot of thermal inertia. I suspect traditional metal lens bodies in general are worse than the polycarbonate ones. -- Graydon -- 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: Lenses fogging over
Gravitational lenses don't have these issues but they're insanely hard to carry and keep shape around... and I haven't seen any K mount black holes yet Cheers Ecke 2010/1/9 Graydon : > On Sat, Jan 09, 2010 at 09:40:15AM -, Bob W scripsit: >> > It seems that my PFA 50/1.4 is a lot more likely to fog over, >> > especially when brought in from the cold, than any other lens I have. > > My worst one for this is the FA100 macro; it's an aluminium brick, and > has a lot of thermal inertia. I suspect traditional metal lens bodies > in general are worse than the polycarbonate ones. > > -- Graydon > > -- > 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: Lenses fogging over
On Jan 9, 2010, at 7:55 AM, eckinator wrote: Gravitational lenses don't have these issues but they're insanely hard to carry and keep shape around... and I haven't seen any K mount black holes yet My credit card. -- Larry Colen l...@red4est.com sent from i4est -- 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: Lenses fogging over
2010/1/9 Larry Colen : > > My credit card. you have a K mount credit card??? I WANT ONE!!! New Pentax rumours of K-amex first emerged on PDML... Mental Note: PS blurry cameraphone picture, inform RiceWine ]=) -- 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: Lenses fogging over
On Jan 9, 2010, at 9:05 AM, eckinator wrote: 2010/1/9 Larry Colen : My credit card. you have a K mount credit card??? I WANT ONE!!! New Pentax rumours of K-amex first emerged on PDML... Mental Note: PS blurry cameraphone picture, inform RiceWine ]=) On second thought, my credit card keeps getting sucked into the K- mount black hole. -- Larry Colen l...@red4est.com sent from i4est -- 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: Lenses fogging over
2010/1/10 Larry Colen : > > On second thought, my credit card keeps getting sucked into the K-mount > black hole. proof enough - point taken; the K-amex is real... -- 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.
