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Thread: Stack your photos with MacroFusion

  1. #21
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    Re: Stack your photos with MacroFusion

    Thanks. Let me know if I can provide any further info on this.

  2. #22
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    Not working for me, example photos posted

    Hi, I am trying to use MacroFusion but I am unable to make it work. It seems that the focus breathing correction is not working --- the preview seems aligned but the final foto does not work (It's a blurry mix of the original photos).
    The three fotos are macro of pencils, each one focused on the named color:

    http://www.rgtti.com/focusstack/F1yellow.jpg
    http://www.rgtti.com/focusstack/F2blue.jpg
    http://www.rgtti.com/focusstack/F3orange.jpg

    I am using ubuntu 12.10, with the dhor/myway PPA enabled. The outout is completely messed up:

    http://www.rgtti.com/focusstack/output.jpg

    Hoping that with these shot someone more expert than me can see what's happening...
    Thanks anyway,
    Romano

    PS by the way, the generated jpg could not be opened by the gnome image viewer, it says "Error interpreting JPEG image file (Suspension not allowed here)". GIMP opens it well.
    Last edited by r_mano; April 15th, 2013 at 08:58 AM.
    Have a nice day,
    Romano --- Linux user since 1989: first kernel 0.99pl8, Slackware distro (on 40 floppies! )

  3. #23
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    Re: Stack your photos with MacroFusion

    Hi,

    I can't see your images (firewall issues) but do you have overlapping in-focus areas with just three images? Afaik they won't get properly aligned otherwise, have you tried with images where focus is altered only very slightly between each frame, so they overlap?

  4. #24
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    Re: Stack your photos with MacroFusion

    Quote Originally Posted by kurja View Post
    Hi,

    I can't see your images (firewall issues) but do you have overlapping in-focus areas with just three images? Afaik they won't get properly aligned otherwise, have you tried with images where focus is altered only very slightly between each frame, so they overlap?
    I will try to make the image visible to all: try http://www.rgtti.com/focusstack/imgs.html

    I think that the main problem is that there is a LOT of focus breathing, and the align_image_stack step got the alignement completely wrong. I will try with another set of images...

    PS I tried CombineZP on windows, and although the result is not perfect (the orange pencil comes out a bit transparent), overall the image is much better. Maybe there is a way to trim parameters of align_image_stack to have a better alignement...
    Have a nice day,
    Romano --- Linux user since 1989: first kernel 0.99pl8, Slackware distro (on 40 floppies! )

  5. #25
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    Re: Stack your photos with MacroFusion

    You need more intermediate images. Three, using those spacings is not enough.
    Focus stacking needs overlap, it is not for taking several disparately focused images and expecting there to be massive interpolation between each image.
    Many photographers will use 20-70 images to stack for something as simple as a fly so your three pencils Imho are way short of enough.

  6. #26
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    Re: Stack your photos with MacroFusion

    Quote Originally Posted by robert shearer View Post
    You need more intermediate images.
    Yes, I supposed that. Will using more images cause a better behaviour of align_image_stack? I still think that yes, three are too few images, but the result of the alignement is still very wrong...

    Thank you for the comment, anyway. I will try to repeat the test with mucho more shots, and then comment.
    Have a nice day,
    Romano --- Linux user since 1989: first kernel 0.99pl8, Slackware distro (on 40 floppies! )

  7. #27
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    Re: Stack your photos with MacroFusion

    I think that the main problem is that there is a LOT of focus breathing,
    Don't refocus for each shot. Leave the lens focused as for the first shot and move the whole camera.
    You will need some sort of stage for this.
    Handheld will not work.

    and the align_image_stack step got the alignement completely wrong
    No, it did the best it could with the images it was given. Gigo.

    http://www.pentaxforums.com/forums/p...rs-frames.html
    http://www.pentaxforums.com/forums/p...il-advice.html
    http://www.ebay.com/itm/Linear-Stage...de8282&afsrc=1

  8. #28
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    Re: Stack your photos with MacroFusion

    As said above, adjusting focus on the lens is usually too crude a method for this... preferrably you'd have your camera attached to a focus rail on a tripod, so you can move the camera back and forth in minute increments. Change of focus in each consecutive shot should be very small, so that the sharp areas have good overlap; otherwise, automatic alignment just won't work. If you want you can ofc align and merge such photos in gimp (or photoshop or whatever you use).

  9. #29
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    Re: Stack your photos with MacroFusion

    Kurja, Robert:

    thanks a lot for the useful insights. I do have a rail --- I just thought (wrongly) that changing focus would led to less different FOV than moving the camera. I will try again in the right way!
    Have a nice day,
    Romano --- Linux user since 1989: first kernel 0.99pl8, Slackware distro (on 40 floppies! )

  10. #30
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    Re: Stack your photos with MacroFusion

    Hi there,
    Macrofusion seems to complete all tasks but the preview does not appear. Any help or suggestions more then welcome to get it going. Thanks, Bert

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