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Favorite FF Focal Length Lens for Astro Work in the 18-20...
  
 
MRomine
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p.1 #1 · p.1 #1 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Nikon mount. Have a favorite lens with little to no coma wide open in the above range?


Sep 10, 2017 at 10:58 PM
MRomine
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p.1 #2 · p.1 #2 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Wrong forum?


Sep 12, 2017 at 08:14 PM
Steve Spencer
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p.1 #3 · p.1 #3 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


I think the issue maybe the very small range in focal lengths. I didn't respond because I don't shoot astro, so I don't really know. I hear the 14-24 f/2.8 is quite nice an not a lot of coma. I would also look at the new Zeiss Milvus 18mm f/2.8, but I don't know how it does with coma.


Sep 12, 2017 at 09:27 PM
zhangyue
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p.1 #4 · p.1 #4 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Why 18-20 for any reason?

I think Sigma 14mm is the king right now. which system you use?



Sep 13, 2017 at 06:38 PM
MRomine
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p.1 #5 · p.1 #5 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


zhangyue wrote:
Why 18-20 for any reason?

I think Sigma 14mm is the king right now. which system you use?


Nikon D750. 14mm is wider than I prefer to shoot with.



Sep 13, 2017 at 06:40 PM
zhangyue
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p.1 #6 · p.1 #6 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


I had good result with 14-24 and D810. I am not an expert on astro shooting but browse astro images around 500px or flickr seems most people use 14-24.
I have tamron 15-30 on order, I will use it on D850. From review, it seems at least as good as Nikon in common range. Will see.



Sep 13, 2017 at 06:56 PM
MRomine
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p.1 #7 · p.1 #7 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


zhangyue wrote:
I had good result with 14-24 and D810. I am not an expert on astro shooting but browse astro images around 500px or flickr seems most people use 14-24.
I have tamron 15-30 on order, I will use it on D850. From review, it seems at least as good as Nikon in common range. Will see.


Yeah not reading the best reviews for the 14-24 or the Sigma 14mm for astro work. Those two are great for most everything else but they exhibit a little too much coma.



Sep 13, 2017 at 06:58 PM
 

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nehemiahphoto
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p.1 #8 · p.1 #8 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


MRomine wrote:
Yeah not reading the best reviews for the 14-24 or the Sigma 14mm for astro work. Those two are great for most everything else but they exhibit a little too much coma.


You might have to check your expectations or get creative by shooting and stitching several vertical photos to an 18-20mm FOV. I have used a 20 1.8, which I think is marginally better than the 14-24 as I understand it. It's much lighter and cheaper though. The focus stinks for astro though.













Sep 13, 2017 at 07:11 PM
MRomine
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p.1 #9 · p.1 #9 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


nehemiahphoto wrote:
You might have to check your expectations or get creative by shooting and stitching several vertical photos to an 18-20mm FOV. I have used a 20 1.8, which I think is marginally better than the 14-24 as I understand it. It's much lighter and cheaper though. The focus stinks for astro though.


You are not the first person to say the same thing about the Nikon 20 f1.8. I have several of the other f1.8 G series lenses and love them for my other work (weddings).

I've read some pretty good reports about the Rokinon lens line-up for astro stuff but I don't know much about them. I'm particularly interested in the Rokinon 20mm but I I have not bee able to find much on it. I think it is a newer release.



Sep 13, 2017 at 07:17 PM
nehemiahphoto
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p.1 #10 · p.1 #10 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Here's what you're looking for:

https://www.lonelyspeck.com/rokinon-20mm-f1-8-astrophotography-review-joshua-tree-national-park/

It's good, but big and might need to try several to get a good copy.




Sep 13, 2017 at 07:37 PM
Two23
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p.1 #11 · p.1 #11 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


I've been using the Nikon 20mm f1.8G and do like it. I'll add that I consider myself a beginner.


Kent in SD



Sep 13, 2017 at 10:36 PM
Two23
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p.1 #12 · p.1 #12 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


MRomine wrote:
Yeah not reading the best reviews for the 14-24 or the Sigma 14mm for astro work. Those two are great for most everything else but they exhibit a little too much coma.



Where are the "bad" reviews for the Sigma 14mm? I've only found good ones?

https://www.dpreview.com/articles/1717621214/astrophotography-with-the-sigma-14mm-f1-8-art-lens

https://www.lensrentals.com/blog/2017/07/sharpness-tests-of-the-sigma-14mm-f1-8-dg-hsm-art/

https://jackfusco.smugmug.com/Blog/Sigma-14mm-f18-ART-First-Images


Kent in SD




Sep 13, 2017 at 10:48 PM
MRomine
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p.1 #13 · p.1 #13 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Two23 wrote:
Where are the "bad" reviews for the Sigma 14mm? I've only found good ones?


If I can find it I will share it with you. I was just reading it recently but right now I don't remember where.



Sep 13, 2017 at 11:43 PM
MRomine
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p.1 #14 · p.1 #14 · Favorite FF Focal Length Lens for Astro Work in the 18-20mm Range


Two23 wrote:
Where are the "bad" reviews for the Sigma 14mm? I've only found good ones?


Here is one of the places that I read a few days ago: https://www.lenstip.com/506.7-Lens_review-Sigma_A_14_mm_f_1.8_DG_HSM_Coma__astigmatism_and_bokeh.html

Then the overall summary, see cons: https://www.lenstip.com/506.11-Lens_review-Sigma_A_14_mm_f_1.8_DG_HSM_Summary.html



Sep 14, 2017 at 12:30 AM







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