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FORUMS Photography Talk by Genre General Photography Talk 
Thread started 12 Sep 2017 (Tuesday) 16:48
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Focus Stacking

 
aboudd
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Post edited 9 months ago by aboudd.
     
Sep 12, 2017 16:48 |  #1

I just posted a new piece on my mentoring blog, how create a stacked image photo. Stacking, aligning and blending several images with different focal points can be used to create an image with tremendous focal range, even greater than with a tilt-shift lens at close distances. The technique and images used to create a stacked image in Photoshop are shown at www.fotocritique.blogs​pot.com (external link).

The first photo has the front focus, the second a fully stacked image.


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RhodyPhotos
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Sep 12, 2017 20:56 |  #2

Thank you, always wanted to learn how to do that.

A quick question, do i need photoshop for this or can i do this in canon DPP?


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aboudd
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Sep 13, 2017 07:33 as a reply to  @ RhodyPhotos's post |  #3

I do stacking in Photoshop. I don't use DPP so I could tell you.




  
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Tixeon
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Sep 13, 2017 11:29 as a reply to  @ RhodyPhotos's post |  #4

To the best of my knowledge, Canon DPP 3x or 4x does not support Focus Stacking.


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WaltA
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Post edited 9 months ago by WaltA.
     
Sep 13, 2017 15:01 as a reply to  @ RhodyPhotos's post |  #5

For free software for Focus stacking check out Picolay or CombineZM

http://combinezm.en.lo​4d.com/ (external link)

http://www.picolay.de/ (external link)


Walt
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Goodform
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Sep 14, 2017 12:22 |  #6

I am a noobie so forgive me if this is a silly question, but what is the advantage to doing this vs shooting stopped down?




  
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yellowt2
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Sep 14, 2017 12:39 |  #7

Goodform wrote in post #18452179 (external link)
I am a noobie so forgive me if this is a silly question, but what is the advantage to doing this vs shooting stopped down?

A couple main ones that I know of:
1. Lenses are generally at their sharpest in the middle apertures (f/5.6 to f/8); past that the image gets softer due to diffraction
2. At macro (or close-up) distances even stopping down does not give enough depth-of-field, and focus stacking is still necessary to get the entire subject sharp




  
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RhodyPhotos
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Post edited 9 months ago by RhodyPhotos.
     
Sep 14, 2017 12:47 as a reply to  @ yellowt2's post |  #8

I can attest to #2 above. It is almost impossible to get enough depth of field when shooting macro, even if you stop-down to f/32.


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Goodform
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Sep 14, 2017 13:39 |  #9

Thanks for the education, it makes sense now why stacking would be beneficial!




  
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ejenner
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Post edited 9 months ago by ejenner.
     
Sep 14, 2017 21:57 |  #10

Also, even if you do stop down, say to f11-f16 and everything is in the 'theoretical' DOF, the focal plane is still quite a bit sharper than the edges of the DOF. So if you want to print larger than 8x10 or have something that looks consistently sharp you can focus stack.

This is also good for sharpening the corners of a landscape taken with an UWA.


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Choderboy
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Sep 14, 2017 21:57 |  #11

Moon shots. Not for depth of field, rather to address the issue of shooting through the entire atmosphere. Take 10-20 photos. Focus stacking software will choose the least affected area of each photo and combine into one photo containing the best info of all the shots.


Dave
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Focus Stacking
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