Search found 4579 matches

by Lou Jost
Sat Dec 05, 2015 5:17 am
Forum: Equipment Discussions
Topic: My DIY automated focus stacking rig
Replies: 10
Views: 5579

Wow! I figured you knew that, since you obviously have put a lot of thought into this. Amazing setup!
by Lou Jost
Fri Dec 04, 2015 5:38 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117692

It might be quite cheap to buy a couple of big ceramic or marble tiles to serve as a solid base. I didn't spend much on mine. They give great stability. I drilled mine so I can either attach the camera directly (very sturdy) or attach a Stackshot (less sturdy).
by Lou Jost
Fri Dec 04, 2015 5:34 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Tanzania part XXVIII
Replies: 12
Views: 4390

Very nice. I've also enjoyed your blog. So sorry you had such bad experiences in my adapted country, Ecuador. Sadly, one really does have to be very alert and cautious in the big cities here. I am fascinated by your UV fluorescence photos here and on your website. They inspired me to search for a 36...
by Lou Jost
Fri Dec 04, 2015 5:24 pm
Forum: Equipment Discussions
Topic: My DIY automated focus stacking rig
Replies: 10
Views: 5579

Extremely beautiful and elegant! Congratulations! I do have one minor suggestion, though. The light should move with the subject when stacking, so that it doesn't change angle between frames. This can be especially important with subjects with many specular reflections. Easy to fix by mounting an al...
by Lou Jost
Fri Dec 04, 2015 12:01 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117692

I'd like to put in a plug for the Yongnuo 560 series flashes. They go down to 1/180 power, and this seems to eliminate vibration problems almost completely at 10x or below. They also have numerous triggering options, including slave from an on-camera flash and radio control. Best thing you can do to...
by Lou Jost
Tue Dec 01, 2015 7:22 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Carnivorous katydid
Replies: 2
Views: 1801

Thanks! You can see more things from that day at:
https://ecomingafoundation.wordpress.co ... u-reserve/
by Lou Jost
Tue Dec 01, 2015 10:30 am
Forum: Nature Photography -- Macro and Close-up
Topic: Carnivorous katydid
Replies: 2
Views: 1801

Carnivorous katydid

I spent a day in our Rio Anzu Reserve a few weeks ago. That forest is like the Serengeti in miniature. This is another of the amazing things I found there, a carnivorous katydid devouring a stick insect while another stick insect sits nearby, and while little "vulture" flies sneak underneath the kat...
by Lou Jost
Mon Nov 30, 2015 11:41 am
Forum: Equipment Discussions
Topic: CREE LED dimmer?
Replies: 11
Views: 1649

Or two polarizers, which can be moved from crossed to transparent. Though "transparent" means passing only about the half the light, if your light source is unpolarized. But some devices (like your computer screen) emit only polarized light, and then both the polarizers really are transparent when a...
by Lou Jost
Mon Nov 30, 2015 11:37 am
Forum: Equipment Discussions
Topic: CREE LED dimmer?
Replies: 11
Views: 1649

A mechanical alternative is to use an closable iris, which many of us have on hand anyway.
by Lou Jost
Tue Nov 24, 2015 9:38 pm
Forum: Community Members and Friends
Topic: Hello! I am new here and eager to learn.
Replies: 3
Views: 2526

It's been an eye-opening experience for me. Lots of inspiring work, at the cutting edge of quality and creativity. And lots of science too!
by Lou Jost
Tue Nov 24, 2015 6:29 pm
Forum: Community Members and Friends
Topic: Hello! I am new here and eager to learn.
Replies: 3
Views: 2526

Hi Mark! Great to see you here! This is a treasure trove of information and generous people eager to share their knowledge. I am sure you will enjoy it as much as I have.
by Lou Jost
Mon Nov 23, 2015 5:03 pm
Forum: Photography Through the Microscope
Topic: Garlic and Phacus gigas
Replies: 10
Views: 1065

Amazing.
by Lou Jost
Sun Nov 22, 2015 7:57 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Blue-headed grasshopper
Replies: 0
Views: 897

Blue-headed grasshopper

This is another of the creatures I saw a few weeks ago on a day trip to our Amazonian forest reserve. It is a two-image stack, handheld bridge camera plus Raynox close-up lens, with TTL on-camera flash diffused by a piece of a plastic bottle attached to the close-up lens. http://www.photomacrography...
by Lou Jost
Sat Nov 21, 2015 12:28 pm
Forum: Equipment Discussions
Topic: Recommended Step size for Nikon 0.25na 10x on Canon 100-400
Replies: 4
Views: 842

This may be a good opportunity to ask a question about that table. There is a single table for microscope objectives, giving step size only as a function of (nominal?) NA. But doesn't DOF (and effective NA) also depend on the focal length of the tube lens?
by Lou Jost
Sat Nov 21, 2015 5:27 am
Forum: Photography Through the Microscope
Topic: Netrium and Sphagnum
Replies: 14
Views: 1185

Thank you Marek, especially for explaining the compensator. With that information I can begin to work and learn more.