night/astro phoography

Discussion in 'Photography Equipment & Products' started by vandalismo, Nov 17, 2017.

  1. KmH

    KmH Helping photographers learn to fish Supporting Member

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    f/3.5 is a fraction. f is the focal length the lens is set to, or fixed at if the lens is a prime lens.
    With fractions - a smaller numerical denominator usually makes a fraction a bigger number.
    f/22 is teeny tiny compared to f/1.8, both as a number and as a lens opening (aperture).

    Lots of people choose to ignore the reality of fractions, though by learning some simple math techniques fractions are no harder to deal with than whole numbers.
    For example:
    butterfy method of adding fractions - Yahoo Search Results


     
  2. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Rokinon 14mm 2.8 is a great and cheaper lens.
     
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  3. nerwin

    nerwin Been spending a lot of time on here!

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    My 20 1.8G is perfect for milky way shots BUT sounds like you are on crop, so...I'd have to recommend the Tokina 11-16/11-20 2.8 since they are affordable, especially used.

    The new Sigma 14 1.8 ART is outstanding, but very expensive too.

    There really isn't any ultra wide angle 1.8 lenses for crop sensors, not that I know of. The Rokinon 16 f/2 might good one too.

    My vote is for the Tokina 2.8 UWA zooms, I think they are the best bang for the buck.
     
    Last edited: Nov 30, 2017
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  4. petrochemist

    petrochemist No longer a newbie, moving up!

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    Samyang make a 10mm /2.8 which is reasonably affordable. I can't vouch for it's quality as I can only use mine adapted & the adapter was rather far out for focus.
     
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  5. vandalismo

    vandalismo TPF Noob!

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    i have decided to take the tokina 11-16 or samyang. waiting for nice deal on the2nd hand market
     
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  6. Shuiyin

    Shuiyin TPF Noob!

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    I bought a Rokinon 24mm f1.4 specifically for astrophotography. It works fantastic and I have got some great shots with it. I only use it for night photography because it is a fully manual lens which is a bit cumbersome when trying to shoot anything else. It was a bit of a pricey lens at $500 USD however it was completely worth it for me because night photography is my favorite after all.
     

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