Problems: Focus Stacking at high magnification
This is a little plant I found by my retaining wall; Cardamine hirsuta is about 3-4cm tall.
This first photo was taken with a D800E & 200mm micro-nikkor & Stackshot as a 30x stack. There was minor coma about the long seed capsules which took just a few seconds to fix up by cloning. I'm happy with it; done with Helicon Focus.
The day before I'd photographed the same plant (or its brother) looking down on it with D800E and 105mm lens & Stackshot; 40x stack.
The problem is I can't process the stack without major coma, especially around the thin seed capsules. Some of the background rendering is hideous.
Photoshop CS 6 produces a basically pleasing result spoiled by coma about the plant. here are no parameters to adjust when focus stacking in Photoshop.
Next I tried Helicon Focus, Method B with ghastly results.
Method A was a bit better.
Zerene Stacker cut off the sides of the images; PMax was sort of OK but the DMax results were foul especially the lower percentile efforts. Percentile 90 has some nice features. but still not great.
Am I expecting too much? At close magnification (1:1) the out of focus parts are markedly smeared out compared to the sharp layers. It may be beyond the capabilities of the programs to process the images without coma and I will have to get used to the cloning tool.
But I have seen amazing close-ups of insects on this forum done with focus stacking, much higher magnification than what I've done, and they are crystal clear and razor sharp. What am I missing?
|Post (hide subjects)||Posted by||When|
|Jul 16, 2012|
|Jul 24, 2012|
|Jul 24, 2012|
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%
|Sadiqur_Rahman by Sadiqur Rahman|
from Ain't Going to Work on Maggie's Farm no More
|Airborne by John Beavin|
from - How to respect the Flag and Anthem - (Portrait in Full Colours + A Border)