Jump to content
Sign in to follow this  
kdochert

Merging bracketed shots - HDR?

Recommended Posts

Hi,

 

I have a series of landscape bracketed shots that include the moon, the bracket consists of 9 shots going + / - 4 EV at the extremes. I'm trying to create a HDR merge that included the details in the moon that is captured in the lower exposure shots, but when I use the HDR feature the moon is blown out / overexposed and there is no detail retention even if I turn say highlights down. I then tried turning the de-ghosting feature off so that when merging I could blend in the moon from a low exposure shot, but when viewing even the low exposure shot by looking at the "sources" Affinity has dramatically increased the exposure of the low exposure shots so the moon is again blown out and not showing any details?

 

How do I merge these photo's and retain the moon details I'm looking for? Is HDR the wrong feature?

 

Attached is an example of 6 shots (in jpeg format to keep file sizes down), the other three shots in the series won't upload, error 200?

A6505115_DxO.jpg

A6505116_DxO.jpg

A6505117_DxO.jpg

A6505119_DxO.jpg

A6505121_DxO.jpg

A6505118_DxO.jpg

Share this post


Link to post
Share on other sites

I think you could try using HDR to merge the 1st, 3rd, 4th, and 5th of those. Or to merge the 2nd and 6th. But I don't think you could merge all 6 as they're not similar enough.


-- Walt

Windows 10 Home, version 2004 (19041.388),
   Desktop: 16GB memory, Intel Core i7-6700K @ 4.00GHz, GeForce GTX 970
   Laptop:  8GB memory, Intel Core i7-3625QM @ 2.30GHz, Intel HD Graphics 4000 or NVIDIA GeForce GT 630M
Affinity Photo 1.8.5.703 and 1.9.0.891 Beta   / Affinity Designer 1.8.5.703 and 1.9.0.891 Beta  / Affinity Publisher 1.8.5.703 and 1.9.0.887 Beta.

Share this post


Link to post
Share on other sites

I tried the HDR process in Affinity and also in Photomatix. In Affinity I opted for the Detailed tonemap and in Photomatix, for the Natural map.

5a75ed296c785_MoonPhotomatixNatural.jpg.2073f4293b9add7edcb2f69d8d64f1a6.jpg

Photomatix (above) seems to have produced a reasonable map.

5a75ed32d9988_MoonAffinityDetailed.jpg.b4ed96e36a0e6441217b35a60957014b.jpg

In Affinity, there is a blue cast, and the moon has one distinct ghost, but looks OK otherwise.

I looked at the images in succession, and the moon does seem to move between shots. If you are setting your exposures manually, you will not be able to avoid this. Could I suggest that you go back to your original images, and move  the moon  so that they are as precisely aligned as possible. You will not have to move it much, and you have some rather ill-defined sky in between  which helps. With this kind of shot, with fixed parts to the image and parts which are non-fixed, but are moving, you will always have this problem. There was a recent post of someone trying to merge images of the stars (rotating) against a fixed horizon.

Hope this helps,

John


Windows 10, Affinity Photo 1.8,5 Designer 1.8.5 and Publisher 1.8.5 (mainly Photo), now ex-Adobe CC

CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630

Share this post


Link to post
Share on other sites

I thought the Affinity version looked awful so I had a go myself, didn't use tone map, and aligned via rotate etc not perspective and the alignment worked better.

 

5a764c0cca42a_HDRMerged.jpg.42eee699aeb042747e0d639e1ff90e02.jpg


iMac 27" Late 2015 Fully Loaded, iMac 27" Mid 2011 both running High Sierra 10.13.6 - Affinity Designer/Photo & Publisher - Illustrator CC, Inkscape, Blender, Sketchup, Pepakura Designer, MTC, Pixelmator & Pixelmator Pro + more... XP-Pen Artist-22E, - iPad Pro 12.9 B|  

Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions

Share this post


Link to post
Share on other sites

Ok I found using less images and selecting which ones to use is improving things, here's where I'm at (this site is only taking low res versions of pictures reliably?).

 

Displaying the details of the moon is really what I'm trying to accomplish.

 

Another other tricks / ideas are welcome.

A6505114_DxO_HDR_DxO.jpg

Share this post


Link to post
Share on other sites

Had another but this time in Photomatrix.

 

A6505115_DxO.thumb.jpg.690a03a45d79cd29ce905e887f268f4d.jpg


iMac 27" Late 2015 Fully Loaded, iMac 27" Mid 2011 both running High Sierra 10.13.6 - Affinity Designer/Photo & Publisher - Illustrator CC, Inkscape, Blender, Sketchup, Pepakura Designer, MTC, Pixelmator & Pixelmator Pro + more... XP-Pen Artist-22E, - iPad Pro 12.9 B|  

Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions

Share this post


Link to post
Share on other sites

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...
Sign in to follow this  

×
×
  • Create New...

Important Information

Please note the Annual Company Closure section in the Terms of Use. These are the Terms of Use you will be asked to agree to if you join the forum. | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.