Search found 104 matches

by bralex
Sat Jan 09, 2021 10:46 am
Forum: Equipment Discussions
Topic: Raynox dcr150 custom tube lens
Replies: 21
Views: 650

Re: Raynox dcr150 custom tube lens

I am curious about the motivation for custom design & build. Why not just assemble a flocked tube from standard parts, for example as in http://www.photomacrography.net/forum/viewtopic.php?t=35350 ? --Rik I'm a hobby machinist myself - I've made a few adapters for weird thread combos. I agree with ...
by bralex
Fri Jan 08, 2021 11:29 am
Forum: General Discussion Forum and Community Announcements
Topic: Photo sharing services in 2021
Replies: 2
Views: 145

Photo sharing services in 2021

As I continue to shift away from social media, I've started looking into photo services. I'm mainly interested in sharing with friends/family and having a place to link to for full resolution versions. I'm not looking for any services other than hosting. An app would be nice but not necessary. I'm w...
by bralex
Tue Dec 29, 2020 11:17 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Insects in baltic amber
Replies: 6
Views: 287

Re: Insects in baltic amber

Very nice photos, and a fascinating subject!
by bralex
Fri Dec 18, 2020 10:03 am
Forum: Photography Through the Microscope
Topic: Christmas Tree Crystals
Replies: 16
Views: 1036

Re: Christmas Tree Crystals

Amazing photos!
by bralex
Wed Nov 25, 2020 11:49 am
Forum: Equipment Discussions
Topic: Human error - so easy to screw up!
Replies: 1
Views: 1094

Human error - so easy to screw up!

I change out my setup often, for different magnifications. I was getting unsat results from my latest batch of pictures, so I went back to first principles to figure out what was wrong - cleaning lenses, changing step lengths, etc. Finally I recalculated my extension tube length, and realized I'd le...
by bralex
Mon Nov 23, 2020 10:52 am
Forum: Equipment Discussions
Topic: Choice of processor
Replies: 17
Views: 2336

Re: Choice of processor

Rik (the developer) has previously addressed this http://www.photomacrography.net/forum/viewtopic.php?p=141699#141699 It's dominated by CPU performance, with components of both per-processor speed and aggregate system speed. The processing essentially alternates between "serial" phases where one pro...
by bralex
Sat Nov 21, 2020 10:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Someone grafitti'd my specimen!
Replies: 2
Views: 1140

Someone grafitti'd my specimen!

Hemimorphite from the Red Cloud Copper Mine in Lincoln Co., NM. FOV is about 1 mm. To me, the markings on/in the crystal look like they were made a toddler with a magic marker. The are possibly a residue of unspecified manganese oxide minerals. I believe they are planar, spanning all or part of the ...
by bralex
Fri Nov 20, 2020 11:03 pm
Forum: Equipment Discussions
Topic: Does anyone have the Laowa 100mm x2 macro lens?
Replies: 10
Views: 2104

Re: Does anyone have the Laowa 100mm x2 macro lens?

Oh I guess bralex meant if any 4/3 lenses were checked for this issue in general? I've only tried the Laowa 100mm x2 lens and all "statistics" mentioned here are referring only to that specific model lens. I guess it might have sounded like it was gathered from various Laowa lenses. Thanks, importa...
by bralex
Fri Nov 20, 2020 10:27 am
Forum: Equipment Discussions
Topic: Does anyone have the Laowa 100mm x2 macro lens?
Replies: 10
Views: 2104

Re: Does anyone have the Laowa 100mm x2 macro lens?

I was just looking at these for m4/3. By chance were any of the ones checked m4/3 format? Curious if that makes a difference. ETA: on m4/3 it's a 50mm lens, but it appears at least superficially to have the same specs.
by bralex
Tue Nov 17, 2020 8:52 pm
Forum: General Discussion Forum and Community Announcements
Topic: Interesting stuff
Replies: 18
Views: 2666

Re: Interesting stuff

My thought would be just organized metal stock, since they are kept in cigar tubes, but an outside possibility is thread measuring wires. They're usually a bit shorter, though. https://www.mscdirect.com/browse/tn/Measuring-Inspecting/Dimensional-Measuring-Tools/Thread-Pitch-Diameter-Measuring-Wires?...
by bralex
Thu Nov 05, 2020 8:36 am
Forum: Equipment Discussions
Topic: Yet another "what camera" question
Replies: 6
Views: 2088

Re: Yet another "what camera" question

I am deeply invested with MFT for my field work, where it excels. I used it extensively for studio macro work too, but I now use my FF mirrorless (S1R) for all my macro work, because of better resolution and dynamic range. What's been your experience with availability of L-mount adapters et al.? BH...
by bralex
Wed Nov 04, 2020 3:49 pm
Forum: Equipment Discussions
Topic: Yet another "what camera" question
Replies: 6
Views: 2088

Re: Yet another "what camera" question

"People who can't tell the difference between etymology and entomology bug me in ways I just cannot put into words"

I don't know who originally said it but *chef's kiss*
by bralex
Wed Nov 04, 2020 10:11 am
Forum: Equipment Discussions
Topic: Yet another "what camera" question
Replies: 6
Views: 2088

Re: Yet another "what camera" question

So I've been reading about the EOS-R series (not done yet) - here's a snippet of Canon's description of the silent shutter feature:
"... and situations where the photographer needs to remain discrete."

English is such an awful, awful language :)
by bralex
Tue Nov 03, 2020 8:35 am
Forum: Equipment Discussions
Topic: Yet another "what camera" question
Replies: 6
Views: 2088

Yet another "what camera" question

Good day all - hopefully this will be slightly different than the usual "what camera should I buy" question - a bit more narrowly focused. I usually shoot with an m43 camera - an Olympus EM-5 Mk II. It serves both as a general purpose camera and for my stacking rig. I have a modest investment in m43...