Search found 185 matches

by JW
Tue Jul 20, 2021 5:35 pm
Forum: Equipment Discussions
Topic: 20X Objective Quest
Replies: 5
Views: 249

Re: 20X Objective Quest

Thank you - appreciate the answers. Axial CA is bad for the minerals and crystals that I photograph, so I'll go with the Mitutoyo, if its bad the seller has a return policy
by JW
Tue Jul 20, 2021 3:00 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: DMap intermediate output - ZS
Replies: 3
Views: 147

Re: DMap intermediate output - ZS

Fantastic, thanks Rik!
by JW
Tue Jul 20, 2021 12:56 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: DMap intermediate output - ZS
Replies: 3
Views: 147

DMap intermediate output - ZS

We are all familiar with the need to set DMap Contrast threshold manually about 50% through the process. Rarely (OK, occasionally) I pick the wrong value and the final image looks like crap. Is there a way to go back to the 'set contrast threshold' slider without having to start the stacking process...
by JW
Tue Jul 20, 2021 12:53 pm
Forum: Equipment Discussions
Topic: 20X Objective Quest
Replies: 5
Views: 249

20X Objective Quest

So far I've had two orders for a Mity 20x objective cancelled and refunded in the past month, after receiving confirmation of order and payment :? I've a lead on two additional objective lenses, on is another Mity 20x, but with significant superficial? damage (appears as if a gorilla took a pipe wre...
by JW
Thu Jul 15, 2021 10:31 am
Forum: Equipment Discussions
Topic: Mity 20x NUV usability?
Replies: 3
Views: 95

Re: Mity 20x NUV usability?

Thank you Scarodactyl, that's what I wanted to know.
by JW
Thu Jul 15, 2021 10:21 am
Forum: Equipment Discussions
Topic: Mity 20x NUV usability?
Replies: 3
Views: 95

Mity 20x NUV usability?

This purple guy is for sale on e-bay, the seller has five of them : Mitutoyo Objective Lens M Plan Apo NUV 20x /0.40 ∞/0 f=200 I don't need the near UV correction - but, will this work just as well as a 'normal' 20x for stacking, the working distance is given as 17 mm, which should be fine for my pu...
by JW
Tue Jun 22, 2021 8:13 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Aligning images - widely varying illumination types
Replies: 2
Views: 161

Re: Aligning images - widely varying illumination types

Rik - that's what I figured when ZS does alignment, very much appreciate the example. Back in the day I used a simple JavaScript snippet to effect a mouse-over to swap images. Also, I should have been more clear - the two images posted above were single shots from the middle of each stack. I haven't...
by JW
Mon Jun 21, 2021 7:59 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Aligning images - widely varying illumination types
Replies: 2
Views: 161

Aligning images - widely varying illumination types

So, I took two stacks of the same subject, at 5X. First pass was with a UV-LW lamp, the second was with flash. Each stack is 22 images and each requires alignment. Ultimately, after processing each separately, they will be presented as fluorescent overlay over visible, so the user can slide or switc...
by JW
Fri Jun 11, 2021 8:57 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Mayfly molting from subimago to adult
Replies: 11
Views: 311

Re: Mayfly molting from subimago to adult

Rik - it looks to me that the claws of the old skin legs are not moving - perhaps these are dug in or stuck to the table with enough adhesion to enable the fly to push itself out?
by JW
Fri Jun 11, 2021 12:24 pm
Forum: Photography Through the Microscope
Topic: Salt (NaCl) - I
Replies: 2
Views: 212

Re: Salt (NaCl) - I

Nice images - however, are the 'pyramids' really hopper shaped? Salt usually forms cubes, rarely octahedrons, but hopper-shaped crystals in which the cube faces are not fully developed, leaving behind symmetric hopper-like depressions, are fairly common in halite crystals.
by JW
Fri Jun 11, 2021 11:56 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fayalite
Replies: 1
Views: 134

Fayalite

Another from my recent session photographing microcrystals, with WeMacro rail, MPE65, Canon 50D, Zerene stacker, primarily DMap with minor corrections from a PMax stack of just the main crystal, a bit of PS (actually, more than I care to admit as I did not have the correct color balance settings on ...
by JW
Fri Jun 11, 2021 11:46 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Gilalite and Kinoite
Replies: 0
Views: 120

Gilalite and Kinoite

Green spheres of gilalite and blue crystals of kinoite, both copper silicates, on copper-rich skarn matrix, the clear crystals are apophyllite. I collected this in the 1980's on a very hot day in a field of mine overburden consisting of very large, car-sized boulders, from the Christmas Mine, near C...
by JW
Wed Jun 09, 2021 11:41 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: ZS Advanced Interpolators
Replies: 4
Views: 196

Re: ZS Advanced Interpolators

Rik, yes I went through all of the message and also reviewed the material at pixinsight. Very interesting information; but at the end of the day, unless there is some compelling reason to change, the default interpolator is probably the best choice.
by JW
Tue Jun 08, 2021 10:59 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: ZS Advanced Interpolators
Replies: 4
Views: 196

ZS Advanced Interpolators

ZS has an option for selecting advanced interpolators - Bicubic spline (4x4, default), Spline (6x6), etc. This option doesn't seem to be detailed in the on-line documentation. Hopefully Rik can provide some guidance as to when different interpolators are more preferred.