Search found 1647 matches

by Beatsy
Mon Aug 10, 2020 8:40 am
Forum: Photography Through the Microscope
Topic: Polarisation: a brief dalliance with glycine
Replies: 1
Views: 38

Polarisation: a brief dalliance with glycine

I saw some polarised shots of glycine in a Facebook group and liked the convincing "landscape look". So I ordered some glycine to see if I could make some landscapes of my own for use in surreal composites (arty farty stuff). I simply made a weak solution and dabbed out a few dots on a coverslip, so...
by Beatsy
Tue Aug 04, 2020 1:20 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Dissection needle prototype
Replies: 3
Views: 239

Re: Dissection needle prototype

Glue them in the end of a thin hypodermic needle?
by Beatsy
Tue Aug 04, 2020 1:08 pm
Forum: Photography Through the Microscope
Topic: Diatom arrangement at 20x
Replies: 3
Views: 220

Re: Diatom arrangement at 20x

Lovely shots and arrangements! It is frustrating to lose diffraction colours at higher N.A. I experimented with taking hi-res and low-res images of the same FoV, then use the lo-res one to provide "hue" and the hires for "luminance" (changing layer blend type in HSL mode instead of RGB). There can b...
by Beatsy
Tue Aug 04, 2020 1:00 pm
Forum: Photography Through the Microscope
Topic: Ethylethyl Hydroxy-Paraphenylene Diamine Sulfate
Replies: 3
Views: 194

Re: Ethylethyl Hydroxy-Paraphenylene Diamine Sulfate

Lovely. And a bonus points for the longest chemical name I've yet seen in the context of polarised crystal shots :D
by Beatsy
Sun Aug 02, 2020 3:05 am
Forum: General Discussion Forum and Community Announcements
Topic: Why aren't flies blinded by the sun?
Replies: 6
Views: 289

Re: Why aren't flies blinded by the sun?

Thank you for your comments everyone, and Rik for the definitive answer (definitive enough to satisfy my curiosity, anyway). I learnt a lot more about fly eyes in general over the course of this too. All good stuff. Cheers.
by Beatsy
Fri Jul 31, 2020 7:58 am
Forum: General Discussion Forum and Community Announcements
Topic: Dark fish
Replies: 8
Views: 282

Re: Dark fish

Fish-flocking available soon...
by Beatsy
Fri Jul 31, 2020 7:35 am
Forum: General Discussion Forum and Community Announcements
Topic: Why aren't flies blinded by the sun?
Replies: 6
Views: 289

Why aren't flies blinded by the sun?

I saw one sit completely still in a penny-sized spot of bright sunlight for 10 minutes before it flew off. It prompted this thought that I've never considered before. Their compound eyes have no eyelids or irises (right?) but do have lenses. So even if bright, visible light is no issue, surely there...
by Beatsy
Thu Jul 23, 2020 9:51 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 17
Views: 916

Re: Would you recommend a tripod or monopod for macro in the field?

Thanks, Mark, that's interesting. I think the key element is the shaft and slider sticking out at the front. Acts as linear guide for capturing a hand stack. I think it must need to be rested somewhere though, so not *quite* what I'm looking for. But that idea is filed away - certainly could be usef...
by Beatsy
Mon Jul 20, 2020 11:50 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 17
Views: 916

Re: Would you recommend a tripod or monopod for macro in the field?

Actually, a device like that would be rather simple to make. Just mount a Stackshot on a pistol grip :-k Yes - I knocked-up something similar on a thin aluminium plate (with a WeMacro rail). Just a bodge to try it. Not quite what I'm after. I want the tactile physical connection between my finger a...
by Beatsy
Mon Jul 20, 2020 5:49 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 17
Views: 916

Re: Would you recommend a tripod or monopod for macro in the field?

Hopefully, speculation isn't too far off-topic... I'd like something like one of those gunstock camera holders, but with a modification. Squeezing the (long-travel) trigger slides the camera and lens smoothly forward on the mount while triggering the camera at regular intervals (preferably per unit ...
by Beatsy
Sat Jul 18, 2020 10:17 am
Forum: Equipment Discussions
Topic: Darkfield Adapter for Whole Slide Imaging
Replies: 13
Views: 770

Re: Darkfield Adapter for Whole Slide Imaging

Beta version is coming - light from both sides (separate dimmers) & sample can be rotated. Oh my! That could be so good for diatom arranging and easily adapted to my setup(s). I think I have some suitable parts to try it out too (but not LEDs and electronics :( ). I can probably simulate with fibre...
by Beatsy
Thu Jul 16, 2020 5:10 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 17
Views: 916

Re: Would you recommend a tripod or monopod for macro in the field?

@Beatsy Which carbon travel monopod are you using? I use a Kirk MPA-2 Monopod Head (about £200 new) on a Gitzo GM2562T Series 2 Carbon eXact monopod (£150 2nd hand). The Kirk head was bought to use with a 400/2.8 prime (mainly sport, birds and wildlife), but it works well here too. Oh, and the pod ...
by Beatsy
Wed Jul 15, 2020 12:10 pm
Forum: Equipment Discussions
Topic: Nisi 77mm close up lens - first light and comments
Replies: 2
Views: 242

Nisi 77mm close up lens - first light and comments

Sorry - a bit late writing this up. This short commentary is the result of one garden outing using a Sony A9 and 70-200/2.8GM with the Nisi filter fitted. It was not a strict test of the optics, more a test that the system is suitable for the kind of photoography I want to do with it and the picture...
by Beatsy
Wed Jul 15, 2020 7:08 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Would you recommend a tripod or monopod for macro in the field?
Replies: 17
Views: 916

Re: Would you recommend a tripod or monopod for macro in the field?

Purely my current preferences... For 1:1 and closeup it's handheld. Always. Higher mag, mostly MP-E 65 @ 2-3x it's a carbon travel monopod with added tilt head (borrowed from my 400mm setup). This is light enough to permit handheld but offers a stable-ish point when required. You don't get much move...
by Beatsy
Sun Jul 12, 2020 12:17 am
Forum: General Discussion Forum and Community Announcements
Topic: On Lockdown
Replies: 252
Views: 12209

Re: On Lockdown

If you wear glasses and are required to wear a face mask, you might be entitled to condensation.