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jamaeolus
Joined: 19 Mar 2014 Posts: 2913 Location: Eugene
Expire: 2015-08-20
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Posted: Sat Apr 29, 2017 7:06 pm Post subject: Best eclipse lens for a7ii? |
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jamaeolus wrote:
The eclipse will be traversing very near where I live. I intend to be in totality for near 2 minutes. I know some of you are skilled in astrophotography. What lenses and filters would you recommend for wide angle and tele? _________________ photos are moments frozen in time |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Sun Apr 30, 2017 1:10 am Post subject: |
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visualopsins wrote:
The Solar eclipse this Summer, in August? You should be prepared! There is a lot of online info to study.
Generally, you need the proper filter(s), or, better a Solar Telescope -- made by Coronado...I think they make filters too...the Coronado site can lead to more info. Be sure to properly filter the lens and your eyes!!!
Lens focal length depends on results wanted Wide angle lens pointed properly can capture the entire event...the resulting photos can be superimposed, for example. Telephoto lens needs a tracking mount to follow the subject! _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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dnas
Joined: 14 Nov 2008 Posts: 488 Location: Japan
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Posted: Sun Apr 30, 2017 3:59 am Post subject: |
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dnas wrote:
If you just want to take close up photos of the eclipse as it progresses, then you don't need tracking, you can readjust periodically. Even with the right filter, the Sun is plenty bright enough for tripod mounted shots of 1/100sec for example.
You can get specific solar filters, which are cheap..... Google solar filter sheets. I mount the sheeting on existing filters.
Last edited by dnas on Sun Apr 30, 2017 4:03 am; edited 1 time in total |
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Crazy Leica Fox
Joined: 29 Apr 2017 Posts: 59
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Posted: Mon May 01, 2017 10:28 am Post subject: |
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Crazy Leica Fox wrote:
If you want to shoot wide angle, one thing to consider is the time of day, and how high up the sun will be at your location during the eclipse. That could influence your choice in focal length to capture both the sun and the ground in one shot.
Here's a useful collection of links provided by NASA: https://eclipse.gsfc.nasa.gov/SEhelp/eclipsePhoto.html. If you click on the first one, it shows you some examples of the size of the sun and its corona at different telephoto focal lengths. You need just about 1000mm for the corona to fill the frame, and over 2000mm if you want only the sun. |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Mon May 01, 2017 2:28 pm Post subject: |
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visualopsins wrote:
Depending on focal length, on static tripod @1/100 sec may not be fast enough to prevent blur.
http://starcircleacademy.com/2012/06/600-rule/
and from great NASA link kindly provided by Crazy Leica Fox:
_________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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buerokratiehasser
Joined: 12 Jun 2011 Posts: 470
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Posted: Tue May 02, 2017 6:31 am Post subject: |
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buerokratiehasser wrote:
I used extremly slow 100-300/5.6-6.7 zoom plus two Cokin filters that were pretty dark (each).
Stopping down does not help of course unless it is a preset lens!
Still did not dare to really look seriously into the viewfinder, only glance, and have the AF find it and freehand-ly navigate by exposure (it goes from 1/50 to 1/2000 when the sun is in center).
Actually I do not remember, perhaps I even decoupled the AF after it reached infinity.
In any case, that is how I did it, but I cannot recommend it. It may still be too dangerous. The filter may fall off, etc etc |
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DConvert
Joined: 12 Jun 2010 Posts: 901 Location: Essex UK
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Posted: Tue May 02, 2017 1:28 pm Post subject: |
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DConvert wrote:
There are aspects of the eclipse that work best with a relatively normal focal length (such as the pinhole type projected images through gaps in leaves).
For the Eclipse itself quite a long focal length is needed to fill the frame reasonably. It's easy to check using the moon.
I'd suggest using several cameras, one with long telephoto & another (even your phone) for the environment.
A fish eye shot of the whole sky during totality could have been interesting too at the horizon all round is paler, an effect not seen at other times...
During totality it gets dark enough that you'll need a tripod, and fast lenses or high ISO. But before totality the light levels are high enough to be harmful so a strong filter is needed! A standard 10 stop filter is not recommended (especially with a DSLR) as it doesn't block NIR...
Most of the shots I took of the total eclipse back in 1999 where totally useless. The 500mm mirror lens was OK except that it wasn't fast enough for the film I had available. The best result I got was from pure luck camera shake on my attempt at baileys beads left a (huge) 99 trail which at least shows the year
Cloud cover threatened to obscure the action from the spot we'd gone to. Most of the campsite had cleared with observers heading off in search of clearer skies, fortunately for us the clouds parted about half an hour before totality... |
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dnas
Joined: 14 Nov 2008 Posts: 488 Location: Japan
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Posted: Tue May 02, 2017 10:34 pm Post subject: |
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dnas wrote:
This level of detail with Olympus 300mm f4.5, and soft solar filter:
[/URL] |
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DConvert
Joined: 12 Jun 2010 Posts: 901 Location: Essex UK
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Posted: Wed May 03, 2017 7:20 am Post subject: |
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DConvert wrote:
dnas wrote: |
This level of detail with Olympus 300mm f4.5, and soft solar filter:
[/URL] |
That's not an eclipse!
Lovely shot
Would it be the transit of Venus? |
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dnas
Joined: 14 Nov 2008 Posts: 488 Location: Japan
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Posted: Thu May 04, 2017 12:28 pm Post subject: |
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dnas wrote:
DConvert wrote: |
dnas wrote: |
This level of detail with Olympus 300mm f4.5, and soft solar filter:
[/URL] |
That's not an eclipse!
Lovely shot
Would it be the transit of Venus? |
Yes, transit of Venus!!!!
HERE is an eclipse!!!! It's an annular eclipse, taken through cloud with same lens, but with 2 x polarising filters. I was lucky to see anything, as it was raining ten minutes before!!!
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Thu May 04, 2017 2:35 pm Post subject: |
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visualopsins wrote:
Quote: |
HERE is an eclipse |
WOW!!! _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Thu May 11, 2017 8:07 pm Post subject: |
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visualopsins wrote:
http://www.daystarfilters.com/Quark/CameraQuark.shtml _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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DConvert
Joined: 12 Jun 2010 Posts: 901 Location: Essex UK
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Posted: Thu May 11, 2017 8:36 pm Post subject: |
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DConvert wrote:
visualopsins wrote: |
http://www.daystarfilters.com/Quark/CameraQuark.shtml |
That could be the ultimate for solar viewing, but I don't think it's right for the eclipse.
It's a little bit pricey for most of us as well I suspect! |
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