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any f1.0 lenses (or wider) good for astrophotography?

Discussion in 'Astrophotography' started by travelbug, May 16, 2016.

  1. travelbug

    travelbug Mu-43 Regular

    136
    Oct 20, 2014
    at present i use the rokinon 12/2 for my night shots and star trails (with my em5ii). i shoot wide open usually at iso800 . i deign to go higher (on iso) as i find the em5ii sensor a bit too noisy at that point. i can still capture the milky way with relatively good detail at those settings.

    however, i am toying with the idea of getting a 0.95 lens. thats full stops faster than the rok 12/2, theoretically it would allow me to drop 2 full stops of iso- which would put me at iso200. that would be a really clean image, if possible.

    i read somewhere (here) that the 0.95 voigtlanders produce ugly coma, so that kinda rules them out. what other options do i have for a focal length of 17.5 or wider, if any?
     
  2. wjiang

    wjiang Mu-43 Hall of Famer

    8mm f/1.8. You can use way longer shutter speeds.
     
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  3. travelbug

    travelbug Mu-43 Regular

    136
    Oct 20, 2014
    yes the 8mm, can give you 1 full stop iiirc. although im really looking for a lens that could double as a great low light lens (for indoor, night street, etc) and i already have a 1.8 actually (aside from the rok 12/2).
     
  4. robcee

    robcee Mu-43 Veteran

    289
    Jan 10, 2016
    Toronto
    Rob Campbell
    the voigts aren't great for astrophotography because of the coma and vignetting. That said, they are interesting.

    13685247124_6308255f36_c.

    shot with the 17.5mm

    13684902665_4daf9244b1_c.

    top right corner shows what these lenses do to points of light, e.g, stars. (edit: wide open, you can stop down and by f2.0, they get better, but you lose the whole point of this lens if you have to do that)

    I really wanted the 10.5mm to be an awesome lens for astro, but I played with one in store, just taking pictures of lights at different areas of the lens and it was pretty bad. Chromatic aberrations and purple fringes everywhere.

    I still love my CV17.5 and 25 though. Just not necessarily for shooting stars. :)
     
    Last edited: May 16, 2016
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  5. AG_Alex2097

    AG_Alex2097 Mu-43 Regular

    157
    Dec 18, 2015
    Alex S.
    Wait for Olympus to release their f/1.2 primes i suppose (no eta on those though (and probably only 1 focal length at a time))
    I've searched for a great astro lens as well, but the 12mm f/2.0 from both Oly & Samyang are the fastest lenses that retain great quality with little abberations for the time being (excluding the fisheyes)
     
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