• Welcome to TalkEmount.com, the best Sony E-mount camera and photography community on the web.
    Click here to join for free and enjoy unlimited photo uploads in our forums.

Macro Focus Stacking

Richard Crowe

TalkEmount Top Veteran
Joined
Sep 14, 2018
Messages
861
This is a nine exposure focus-stacked image of a Royal Coachman Streamer fly which is about an inch and a half long. I shot it with an A7iii and a Venus/Laowa 60mm f/2.8 2:1 Macro Lens and merged the images in Photoshop 2020. I used a Minolta focus rail and focused at the nine points via the use of Sony Focus Peaking. I shot the images at f/11 and 1/25 second using ISO 640 and tripped the shutter with a 3-second delay...
focus stack royal coachman.jpg
ILCE-7M3    ----       f/1.0    1/30s    ISO 640
 

Richard Crowe

TalkEmount Top Veteran
Joined
Sep 14, 2018
Messages
861
  • Thread Starter Thread Starter
  • #2
This is done with a single exposure at a 1:2 ratio and f/16...
ILCE-7M3    ----       f/1.0    1/30s    ISO 640
 

Kirkp

TalkEmount Regular
Joined
Nov 2, 2014
Messages
189
So the second photo is set for f/16 to provide additional depth of field, and thus avoid focus stacking?

I notice that the increased depth of field makes the background texture more visible, which could be considered a distraction from the subject. That’s obviously an artistic choice, not necessarily a criticism.

I wonder what the black dots are in the background. Very small apertures make sensor dust much more visible. Could it be that?

I’ve never tried focus stacking. These two images help me understand why I should take the time to learn how. Thanks.
 

Petrochemist

TalkEmount Regular
Joined
Oct 19, 2018
Messages
126
Location
North Essex UK
Real Name
Mike
The stacked shot is definitely better but not by all that much, in this case.
What aperture did you use for the stacked shots?

The black dots are indeed sensor muck, two of them still being visible in the stacked shot. My sensors sometimes gets as few spots as that when I've just done a more thorough job of cleaning them - usually they're worse - one of the disadvantages of a full spectrum conversion!
 
Top Bottom