Jump to content

Recommended Posts

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Similar Content

    • By Ben
      Hi,
      many forums and the "pros" once were certain that the star eater issue makes the Sony A7 Series unusable for astrophotography but I always had good results with my Sony A7rII. So I recently went ahead and had it astromodified. The thick IR-Block Filterglas was replaced with a thin Baader substitute that lets IR Light down to the h-alpha line and the sII line through to the sensor with high transmission. The results can be seen in detail on my google drive link here:
      https://drive.google.com/file/d/1SrdJ7tJbEUwN5KcbXsfpKaesq8KltzmY/view?usp=sharing
      I could write a lot of things that make the A7rII not the perfect camera for astro but suffice to say, it is still bloody capable. Cheers and CS,
      Ben - Instagram - AstroBin
      Technical stuff:
      Acquisition:
      Imaging telescope or lens : Meade SN-8 Imaging camera : Sony a7rII astro modified Focal reducer : TeleVue ParaCorr PLU1106 Filter : STC Cyclops Optics STC Astro Duo-Narrowband Filter Dates : May 28, 2020 Frames : STC Cyclops Optics STC Astro Duo-Narrowband Filter :  39x300" ISO640 Integration : 3.2 hours Darks : ~50 Flats : ~50 Avg. Moon age : 5.67 days Avg. Moon phase : 32.16% Bortle Dark-Sky Scale : 8.00 Processing was done with Adobe Lightroom Classic CC, Aries Productions Astro Pixel Processor APP and Adobe Photoship CC 2018. Stacked with sigma kappa clipping 3/1. Light pollution could not be removed automatically in A.P.P. and had to be done manually in Lightroom with local adjustments and a lot of fiddling. Both images have reduced star sizes with a minimum filter applied to masked stars. The masked stars color’s were also tweaked in order to bring them close to the feel of a normal broadband rgb distribution with colors between either aqua and blue or yellow and orange. I did however not manage to create a mask that includes the faintest and smallest of stars. If you look closely you see how the star colors are a little off, the smaller the stars get

      Hello guest! Please register or sign in to view the hidden content.
    • By animalsbybarry
      Green Heron feeding fledglings A7RIV with 200-600 at about 300mm focal length.
    • By duke
      Hello guest! Please register or sign in to view the hidden content. Aaron Duke
      Colorado Springs, CO, USA
      Sony a7R III
      Sony FE 16-35mm F2.8 GM
      1/320 sec, f/7.1, ISO 100
  • Posts

    • Hi Gang, is there a guide somewhere to which of the older minolta lenses and sgma/tamron lenses as well, i need a long lens for birds mainly around 400mm or more and have seen loads of cheap long lenses on ebay, some are minolta some sigma etc, question is which will work ok with my A7ii dslr thanks
    • ENJOY ! Hello guest! Please register or sign in to view the hidden content.
    • I have never done any astrophotography. It is my understanding that with the a7Riiiii raw uncompressed, the only change that happens by selecting a picture profile are the gamma settings. https://youtu.be/9GGDkf4wMWg Therefore, which picture profile, if any, is best for astrophotography? Thanks very much for your help.
    • Think it's quite up to me when to decide to move along. In my very first post I indirectly answered your question: the A6xxx line will only get a MP boost when market demand is big enough. As of yet, it is not. Your reluctance to respond to my statement about the improvement of technology between the A7R2 and A7R4 is quite the satisfaction I needed from this discussion. Thanks!
    • You quoted a statement I made claiming it was untrue. I gave you the reference to prove it was true. Facts are pesky things. Since then you have been dancing around trying to change the argument. We can agree that this dialog is going nowhere. The title of my post asks a question you are unable to answer. I really don't need to hear that what I am hoping for in a future sensor is useless nor do I need you to tell me how far away I should stand when I view art. I have already shown you how y
×
×
  • Create New...