John, I'm thinking of getting this too. Is yours for the A *300/2.8? Thats what I'm going to use and haven't had a chance to measure the outside diameter of the lens end.
On Tue, Jul 11, 2017 at 11:02 PM, John <sesso...@earthlink.net> wrote: > On 7/11/2017 21:54, Mark Roberts wrote: >> >> I expect there will be more than a few of us attempting to photograph >> the eclipse next month. I've just started a little research into it >> and I'm closing in on a decision as to what filter to use. My longest >> lens is my FA*300/2.8 and it's happily configured with an in-lens 43mm >> filter capability. Here's what I've found that looks most promising: >> https://www.optcorp.com/spectrum-threaded-camera-solar-filter-43mm.html >> >> Anyone have any experience or other recommendations? >> > > I've talked to several people who photographed previous eclipses and was > told not to use the internal filters because the lens will concentrate > enough light to melt them & besides messing up the filter it can damage > the lens & the sensor. One of my sources stated he had found out the > hard way. > > I got an Astrozap AZ-1514 Full Aperture Glass Solar filter that fits > over the lens hood on my 300/2.8 - "Full Aperture Glass Solar Filter > 124mm-130mm (4-7/8 to 5-1/8) diameter." > > https://www.astrozap.com/scripts/prodList.asp?idCategory=36 > > I tried it out at GFM. It worked just fine, but I'm still learning how > to aim the camera. I should measure the lens hood diameter on my > 80-200/2.8 Tokina ATX-Pro and order a filter for it. > > -- > Science - Questions we may never find answers for. > Religion - Answers we must never question. > > > -- > 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. -- -- Photography takes an instant out of time, altering life by holding it still. Dorothea Lange -- 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.
