Search found 246 matches

by Sym P. le
Sat Jun 17, 2023 4:17 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pieris
Replies: 27
Views: 6720

Re: Pieris

Ok, I missed that. Thanks.
by Sym P. le
Sat Jun 17, 2023 1:47 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pieris
Replies: 27
Views: 6720

Re: Pieris

Is it me or is the latest image reversed?

I've attached a portion which I adjusted slightly and reversed.

Pieres reversed 3D.reduced.jpg
by Sym P. le
Tue May 16, 2023 7:58 pm
Forum: Nature Photography -- Macro and Close-up
Topic: An Alligator Assimilated
Replies: 5
Views: 1276

Re: An Alligator Assimilated

Nice photo essay! From researchgate.net, "Blow Flies Visiting Decaying Alligators ..." , we find at bugguide.net, Cochliomyia macellaria or an example of an individual . That search was surprisingly quick. There are likely many other decomposing mechanisms and species at play. From BugGuide, Cochlio...
by Sym P. le
Sun May 14, 2023 7:54 pm
Forum: Photography Through the Microscope
Topic: Iridescent Butterfly Wing Scale @ 100x
Replies: 12
Views: 1167

Re: Iridescent Butterfly Wing Scale @ 100x

Directional lighting aligned with the longitudinal ribs? That's generally how I did mine here (fifth image). The one mm object distance insured that no other lighting interferred with the imaging process and the wing/scale orientation basically aimed toward the side light source. P.S. As I look clos...
by Sym P. le
Sun May 14, 2023 7:49 pm
Forum: Photography Through the Microscope
Topic: Foraging Rotifer.
Replies: 1
Views: 560

Re: Foraging Rotifer.

I can clearly see food items enter the mouth where they are held until moved into the mastax, after which they emerge into the stomach in a degraded condition. One instance begins at 0:44 (link) . Follow the bright green blob far left. It moves toward the rotifer before it does a loop-de-loop as it'...
by Sym P. le
Sun May 14, 2023 1:04 pm
Forum: Equipment Discussions
Topic: New olympus 90mm 2x macro
Replies: 114
Views: 77671

Re: New olympus 90mm 2x macro

Thanks for posting your comparison. I'm wondering why the target images are different sizes for each lens even though the pretense is that all are shot at 1:1. What am I missing?
by Sym P. le
Mon May 08, 2023 12:16 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Colias sp.
Replies: 3
Views: 1482

Re: Colias sp.

Thanks for the feedback. I'm thinking the same. I made no effort to sharpen them or work with the RAW images. Perhaps there is more to be gained.
by Sym P. le
Sun Apr 30, 2023 8:36 am
Forum: Nature Photography -- Macro and Close-up
Topic: Colias sp.
Replies: 3
Views: 1482

Re: Colias sp.

These are Colias philodice (Edit changed from C. eurytheme to C. philodice). The expired specimen showed up in my car in January. I've found several publications which explain the scale structures: Researchers Switch Off Gene to Switch On Ultraviolet in Butterfly Wings researchgate.net/figure/Colias...
by Sym P. le
Sat Apr 29, 2023 1:46 am
Forum: Nature Photography -- Macro and Close-up
Topic: Colias sp.
Replies: 3
Views: 1482

Colias sp.

I was trying out the High res on an E-M1II. It seems to work.
01.11061350.Orange Spot.1024.JPG
02.11061349.3D Orange Spot.1024.JPG
03.11061351.Arrows.1024.JPG
04.11061343.1024.JPG
11061328.Scales.JPG
by Sym P. le
Wed Apr 26, 2023 8:41 am
Forum: Community Members and Friends
Topic: Hello ALL
Replies: 2
Views: 1952

Re: Hello ALL

Welcome to the forum. My good trouble started with a Canon G11.
by Sym P. le
Wed Apr 26, 2023 8:37 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Adapter For Enlarging Lens advice
Replies: 2
Views: 1078

Re: Adapter For Enlarging Lens advice

Pentax is M42 x 1mm and the Nikon El uses the Leica thread M39 x 26tpi. Check that adapter is intended for this use, it is quite common. There are other variations on the M42 and M39 threads. P.S. I should add, a typical bellows setup is reverse mounted and would require the appropriate filter threa...
by Sym P. le
Wed Apr 19, 2023 3:45 pm
Forum: Equipment Discussions
Topic: New olympus 90mm 2x macro
Replies: 114
Views: 77671

Re: New olympus 90mm 2x macro

I have to agree with Lou. The departure from infinity focus is the issue, not the focal length. As far as sensor coverage, the physical size of the tube lens aperture will restrict the coverage, i.e. for a shorter focal length tube lens, a larger aperture setting will be required to cover the same a...
by Sym P. le
Sun Apr 09, 2023 2:52 pm
Forum: Photography Through the Microscope
Topic: The "mechanical engineering" of a butterfly wing scale
Replies: 7
Views: 1279

Re: The "mechanical engineering" of a butterfly wing scale

Obviously work that's beyond me. Is there any chance of teasing a 3D view out of the stacks?
by Sym P. le
Sun Apr 09, 2023 2:48 pm
Forum: Photography Through the Microscope
Topic: Radiolaria - first try
Replies: 3
Views: 794

Re: Radiolaria - first try

Dark, if it matters. You definitely captured the 3rd dimension as it looks globular. I can't imagine that being a beginners feat.
by Sym P. le
Fri Apr 07, 2023 4:37 pm
Forum: Equipment Discussions
Topic: 2x Mitutoyo objective. Any good?
Replies: 25
Views: 3342

Re: 2x Mitutoyo objective. Any good?

For a bit of effort you get a top tier lens.

One adapter or two? An excellent lens for a song?

https://rafcamera.com/clamp-18mm-to-rms-m