How to Focus Stack – Rings example

In this photography class Karl walks you through the process of how to focus stack an image in Photoshop.

Working on the ring image shot in the previous class, Karl starts at the very beginning, explaining how to make RAW adjustments before progressing to aligning multiple images and merging these multiple layers.

He also shares some useful tips to help speed up the process and how you can manually adjust layer masks created by Photoshop to get the best focus.

In this photography class you’ll learn the following:

  • How to focus stack an image
  • How to achieve sufficient depth of field when photographing small objects
  • How to edit jewellery product images
  • Making RAW adjustment to an image
  • Photoshop auto align feature
  • Working with layer masks in Photoshop

You can watch a more detailed class on how to focus stack and retouch a product image in our Zenith Watch product shoot. If you’d like to learn more about how to retouch a product image, please visit our Post Production section.

If you have any questions about this class, please leave them in the comments box below.

NOTE: This photography class is available with English subtitles.


  1. Hello Karl
    Your work and education is amazing and I have had hours of great knowledge imparted to me,
    My question is why did you shoot so wide and then crop away so much as opposed to shooting tighter?
    Beautiful work
    Many thanks
    Michael Hogan

    1. Hi Michael, thank you for your comments and well observed. The main reason is that depth of field rapidly decreases as you increase magnification. Going closer is increasing magnification and my depth of field would have become less and less requiring more and more shots to complete the focus stack. Still possible of course but I was shooting with a 100mp camera so cropping in and ending up with the equivalent of a 50mp camera wasn’t a problem for this shot.

  2. Nice! I’ve always focus stacked ultra wide angle landscape images fore to aft manually using 3-4 images and using layer masks and masking images when one images lose focus and another gains it. Can using the stacking option give good results on landscape images as well? thanks!!


    1. Hi Yes, if you’ve got a rock solid ground and tripod but it’s not often as necessary unless you are looking for complete close up foreground object to horizon depth of field because wide angle lenses have a naturally greater depth of field than the type of lenses used for product photography anyway so usually at f11 or f16 I find them good as they are and you can then just concentrate on the moment. For example if you having moving items in the scene then this creates more difficulties for focus stacking techniques.

  3. Hi has anyone had issues with colour casts when applying a focus stack, I just shot a ring with an emerald and I’m getting a horrible colour cast. 🙁

    1. Problem solved. Seems a different stacking software solved my colour cast issues.
      It was consistent on all shots I was colour correcting with x-rite card checker on the original shoot (pre-stack). The photoshop stack was creating a distinct green colour cast.
      I’ve used this method a few times and never come across this problem.

      I used a trial of Helicon Focus software.

  4. Hey Keeler I did a little explaining in jewelry photography using a tent to photograph but I didn’t get the result of purity in the ring does the tent make a difference in this

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