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Old 25-05-2022, 10:19 AM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 3,052
Quote:
Originally Posted by xelasnave View Post
...
Never have I needed something as much as I needed to bag this image as I wrote in general chat the wet is really getting to me and realistically I am a tuff sort of character but I had reached near breaking point..living alone is past most people but you need to be able to see some other humans, just for a while so not just going to the post office is very damaging...

Thanks for listening

Alex
Hi Alex,

Good on you for getting out there with a nice result

Quote:
Originally Posted by xelasnave View Post
...
Further my skills with the dodge and burn tool in Photoshop came in handy particularly to minimise the vignetting which was very apparent on the right side of the image...but I would have liked to manage that issue via flat frames ..maybe next time.
There are a few ways to get rid of the vignetting:
  • Flat frames
  • Adjust the exposure in specific areas of the image in Photoshop
  • Dodge/Burn in Photoshop(your mehod)
  • Vignetting correction in Photoshop
  • Lens correction in Photoshop
  • Lens correction in Camera either for specific Nikon recognised lenses or general correction other lenses from Min to max

Of course flat frames are the most complete method as they handle your specific lens's characteristics in terms of vignetting and dust spots, BUT if you want a simpler / easier ride that corrects for the vignetting and other lens distortions then you should consider using Lens corrections in Photoshop. Photoshop recognises many lenses and can correct for their distortion, vignetting and somewhat correct for some chromatic abberation using Lens profiles for most lenses. I checked and your Nikon 18-55mm AF-P VR lens profile is listed in Photoshop CC2017. To employ lens profiles, open Photoshop, select and drag in your images to the Photoshop work space, whereupon an Adobe Raw Panel will open with the multiple images shown. You then select the Lens Icon (the 6th icon in the list in the TOP RIGHT) and CHECK "Remove Chromatic Abberation" and CHECK "Enable profile Corrections". Your lens may come up automatically or your can select it manually from a Maker's lens list. This change is made for the selected image you can then apply it to all your image set using the synchronise function. Try it - A Lazy No Flats method that does more than flats do, except for removing handling dust spots.

I will link to a great video by Tony Hallas which shows the method as well as other astro techniques and equipment.
It's an OLD video from 2014 and Adobe Raw is now a part of Photoshop so it looks different and lens corrections by maker and lens model are now included for most lenses, rather than the simple "vignetting correction" control shown in the video.

Watch the whole thing or go from the 12:40 minute mark for processing in Adobe Raw. https://youtu.be/PZoCJBLAYEs

Best
JA

Last edited by JA; 25-05-2022 at 11:05 AM.
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