I finally found a well-written and thorough discussion of solar
photography and filters. It's on Canon's web site but is very much
brand agnostic for the most part:
http://learn.usa.canon.com/resources/articles/2017/solar-eclipse/solar-filters-eclipse-photography.shtml
--
PDML Pentax-Discuss
What i have done in the past is to use 2 polarizing filters and cross
polarize them. 1st one (closest to sun) must be a non circular type.
Done it this way as i am cheap and is all that i have.
Also good results can be had with a welding glass. How you mount it
however is entirely up to you.
Thanks John.
On Thu, Jul 13, 2017 at 10:14 PM, John wrote:
> Mine is a Sigma 300mm F2.8 EX APO in Pentax KAF mount. It's the last of
> their film lenses in that focal length, before they reformulated for
> digital. It has a detachable lens hood that reverses when it's in
Mine is a Sigma 300mm F2.8 EX APO in Pentax KAF mount. It's the last of
their film lenses in that focal length, before they reformulated for
digital. It has a detachable lens hood that reverses when it's in its
case. Measuring across the outside of the lens hood it's 129mm.
The Astrozap
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 wrote:
> On 7/11/2017 21:54, Mark Roberts wrote:
>>
>> I
Hmmm, let me think. Scores of highly skilled photographers from all over the
world will be shooting the eclipse, and their work will be displayed
everywhere. Should I drive 8 hours to add my undoubtedly less than stellar
image to the huge pile? Uh, no.
Paul via phone
> On Jul 11, 2017, at
John 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
Ran across this map on Twisted Sifter. It gives average drive times from
locations in the U.S., Canada & Mexico to the center-line of the eclipse
path.
http://tinyurl.com/Aug21-Drive-Time
On 7/11/2017 21:54, Mark Roberts wrote:
I expect there will be more than a few of us attempting to
On Tue, 11 Jul 2017 21:54:43 -0400, 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
Just as I was heading out on my road trip B sent out an eclipse mailer:
https://www.bhphotovideo.com/c/solar-observing/ci/33818/N/3583558376/sba
When I was in Portland I was talking to my rocket scientist friend Phil
about watching the eclipse, he wants to make a camera obscura to project
the
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
Thanks. I took a look at it & it has some information I can use even if
it is a Canon site.
On 4/20/2017 10:09, Stanley Halpin wrote:
John, others gearing up (pun intended) for the eclipse this August: I
just noticed a reference to a Canon site that has tips on preparation
for the event.
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