Search found 69 matches
- Wed Jan 13, 2021 11:58 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Help with Zerene Stacker
- Replies: 11
- Views: 373
Re: Help with Zerene Stacker
Re: fuzziness around fine suspended structures like these hairlike projections While it won't remove this effect completely (as noted it's due to the optical system), the best method I have found to minimize this is using slabbing leveraging Zerene's PMax algorithm. The PMax algorithm tends to creat...
- Fri Jan 01, 2021 5:37 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Edges of the stacked image is distorted
- Replies: 4
- Views: 304
Re: Edges of the stacked image is distorted
As an interesting aside/continuation - depending on your subject, in particular if it is in part translucent, you may have to deal with these stacking artifacts even if your optical system is perfect. They'll appear from details behind or included in the translucent material; that translucent materi...
- Sun Dec 27, 2020 2:39 pm
- Forum: Equipment Discussions
- Topic: JML Optical 100mm f2 bellows lens
- Replies: 5
- Views: 411
Re: JML Optical 100mm f2 bellows lens
If another appears in a Nikon mount like that one you linked, I'd take a shot at it.
- Thu Dec 24, 2020 2:01 pm
- Forum: Equipment Discussions
- Topic: Megadap adapter for nikon Z - for focus stacking?
- Replies: 1
- Views: 151
Megadap adapter for nikon Z - for focus stacking?
This adapter is intriguing, Ken Rockwell obviously only tested it for normal photography but with 6.5 mm travel of motorized helicoid under the electronic command of the camera it seems like there would be potential for this to be an all-in-one focus stacking solution into the approximate 2-10x rang...
- Sun Dec 13, 2020 2:27 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Inclusion in quartz grain
- Replies: 2
- Views: 503
Re: Inclusion in quartz grain
Very nice, I really like stereo views into inclusions and transparent crystal surfaces!
These inclusions are most likely rutile (titanium dioxide). To the naked eye they look like golden needles, but all the lovely crystal texture along the spike is revealed in high mag.
These inclusions are most likely rutile (titanium dioxide). To the naked eye they look like golden needles, but all the lovely crystal texture along the spike is revealed in high mag.
- Mon Dec 07, 2020 5:37 pm
- Forum: Equipment Discussions
- Topic: Speccing out a jewelry photography setup
- Replies: 6
- Views: 839
Re: Speccing out a jewelry photography setup
Parfocality is going to be your main limiting factor, most of the usual suspects either aren't zooms, don't perform anywhere close to worth considering, or aren't parfocal. You have a few usual suspects in terms of industrial inspection zooms at hand it sounds like. Other fancy industrial line-scan ...
- Sat Oct 17, 2020 11:58 am
- Forum: Equipment Discussions
- Topic: Canon DSLR discounts
- Replies: 9
- Views: 2371
Re: Canon DSLR discounts
I have a Minolta 5400 and the 7-element Scanner-Nikkor, which in their appropriate ranges I believe do resolve at this level. I also have a Mity 5x and 10x with CH-200 tube lens, which I believe also resolve at this level, though unsure if Mitutoyo lenses fill a full frame sensor. Within the Nikon s...
- Fri Oct 16, 2020 8:01 pm
- Forum: Equipment Discussions
- Topic: Canon DSLR discounts
- Replies: 9
- Views: 2371
Canon DSLR discounts
The high-end Canon DSLRs are currently incredibly aggressively discounted. Canon has disclosed their intention to shift focus to mirrorless and their new R-series bodies and lenses seem to lead the pack. That has led to the most aggressive discounts I have ever seen on actual top-end equipment: the ...
- Sun Oct 04, 2020 5:19 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Wulfenite on Mimetite
- Replies: 6
- Views: 2028
Re: Wulfenite on Mimetite
In the interest of full disclosure, I generally run my images through Perfectly Clear 3.5. However, I strive to use this for whole-image correction closer to actual color/what I see through the viewfinder rather than to apply something like an Instagram filter. I do not change the color balance. Thi...
- Mon Sep 28, 2020 9:05 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Wulfenite on Mimetite
- Replies: 6
- Views: 2028
Wulfenite on Mimetite
Thumbnail size specimen of Wulfenite on Mimetite from the Rowley mine, Maricopa county, AZ . A few chips and broken corners but the overall specimen is quite nice. wulfenite_mimetite00_pmax_of_pmax_reduced.jpg After Robert's recent article where he found the Scanner-Nikkor ED 7 element lens did quit...
- Sun Sep 27, 2020 9:48 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Laser aiming and focus in photomacrography
- Replies: 51
- Views: 48287
Re: Laser aiming and focus in photomacrography
I ordered a couple of these diodes and heatsinks/mounts. I'm going to experiment with 3D printing a mount for the heatsink, as well as just directly 3D printing a mount for the diode for Nikon.
If successful I'll post the STL files.
If successful I'll post the STL files.
- Sat Sep 05, 2020 10:56 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Boulder opal
- Replies: 4
- Views: 1360
Re: Boulder opal
I manually swapped because in the preview view, this looked incorrect. Then on revision I opened the incorrect version and manually swapped it again, resulting in the same output (with a bit of cropping on the edges to remove the lines from stereo artifacts). This is the actually corrected version. ...
- Sat Sep 05, 2020 6:57 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Boulder opal
- Replies: 4
- Views: 1360
Re: Boulder opal
It's come to my attention the stereo pair from the first 10x image is likely swapped; see if this works better.
- Fri Sep 04, 2020 4:50 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Boulder opal
- Replies: 4
- Views: 1360
Boulder opal
Yoweh boulder opal in ironstone matrix, SW Queensland, Australia. This small specimen is presented along its natural cleavage face (irregular, no polish) showing significant multicolored fire throughout dark gray translucent opal in the shattered orange/brown host rock. 2.7x magnification with Minol...
- Sun Aug 30, 2020 9:46 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Questions for the experts.
- Replies: 12
- Views: 2525
Re: Questions for the experts.
Long story short, bigger sensor isn't necessarily better when it comes to photomacrography. You've got the same body I do one generation newer (I currently use the D7000) and while a bit more resolution might be nice, the truth is I'm getting excellent results. I'm planning to shoot the shutter out ...