Search found 74 matches

by AlxndrBrg
Mon Nov 18, 2019 4:24 pm
Forum: Equipment Discussions
Topic: Ergonomics of photomacrography
Replies: 5
Views: 958

Re: Ergonomics of photomacrography

I can't speak for your specific case, but until recently I spent quite some time behind a dissection microscope myself. In this time I mostly used one of these saddle stools and found this preferable to a normal chair (which I was forced to use at times). Can highly recommend trying this change! Th...
by AlxndrBrg
Sun Nov 17, 2019 1:44 pm
Forum: Equipment Discussions
Topic: Ergonomics of photomacrography
Replies: 5
Views: 958

Ergonomics of photomacrography

I have recently started have problems with my back, neck and shoulders from spending too much time at my work station, so much that a change is clearly needed. Was thinking that the forum users here must have accrued a lot of wisdom over the years when it comes to the ergonomics of photomacrography....
by AlxndrBrg
Thu Nov 14, 2019 4:31 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Solitary Bee
Replies: 2
Views: 930

Gorgeous, it's a male Andrena sp. - where was the images taken, this is indeed a late date for a solitary bee
by AlxndrBrg
Tue Oct 29, 2019 7:40 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Balloons in pits, brown marmorated stink bug
Replies: 22
Views: 5491

As a bona fide entomologist maybe I should weigh in here, although I'm more of a taxonomist than sensory biologist. Would say they are mechano-receptors, as a balloon shape does not make much sense for a chemo-receptor. A chemo-receptor wants a lot of surface area to volume ratio, so a long thin rod...
by AlxndrBrg
Mon May 27, 2019 6:05 am
Forum: Macro and Close-up Archives
Topic: Moving black spots on the eyes of a mantis
Replies: 13
Views: 43687

I've read that there infact should be I think six secondary spots around the main spot. They are probably hard to see though. ... I must say that when I've held a dragonfly in my hands with very big eyes, and moved it very close to my own eyes, the surface seems to float too. Maybe the same effect....
by AlxndrBrg
Tue Apr 23, 2019 8:47 am
Forum: Nature Photography -- Macro and Close-up
Topic: Colorful orchard spider probably Leucauge venusta
Replies: 18
Views: 5420

With those thin palps it's a female for sure. The silvery facets are actually inside the animal, underneath it's transparent skin. I dont think the individual silvery "divets" are cells, they are far too big, they are probably guanin mirrors which is used as a silvery back light (much like in octopi...
by AlxndrBrg
Thu Apr 04, 2019 3:59 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Black insect
Replies: 11
Views: 3212

Pretty, it is an ensign wasp, family Evaniidae, they are parasitoids of cockroach oothechas. Probably it is the species Evania appendigaster, a common worldwide species, but it could of course be something similar
by AlxndrBrg
Mon Apr 01, 2019 5:35 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Brightness compensation in ZereneStacker
Replies: 3
Views: 2297

Brightness compensation in ZereneStacker

Maybe this is a known behavior in ZS, but I thought I'd post it here anyway since the difference was so drastic. My setup uses constant lighting, so there is no real reason why I should use the brightness compensation, just kept it on since figured it it could help some if one of my Jansjö's got bum...
by AlxndrBrg
Thu Feb 14, 2019 10:12 am
Forum: Equipment Discussions
Topic: Warning: Don't use Laserpointers on your camera!
Replies: 7
Views: 3255

Re: Warning: Don't use Laserpointers on your camera!

Antal wrote: BUT:
I got dead pixel since!
Altough I did laser only when mirror were down.
How would the laser create a dead pixel on the sensor if you only ever used it when the mirror was down?
by AlxndrBrg
Fri Feb 01, 2019 11:28 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Question Abought UV light.
Replies: 8
Views: 3438

Dont think you need to worry, unless you have special (quartz glass?) lenses made for UV photography you wont ever get any UV light reaching the sensor, unless you shine the light directly on it
by AlxndrBrg
Wed Nov 28, 2018 10:05 am
Forum: Nature Photography -- Macro and Close-up
Topic: A cuckoo wasp
Replies: 2
Views: 2891

Nice shot! It is a Chrysis sp., but not C. angolensis , that is a much bigger and stockier animal, with shiny integument and a dark blue last tergite. This is some other species, perhaps a C. pattoni male, but ID'ing these wasps from pictures are next to impossible, there's too many similar species....
by AlxndrBrg
Sat Nov 10, 2018 4:41 pm
Forum: Equipment Discussions
Topic: Stacking Low Cost Enlarger Lenses For High-End Image Quality
Replies: 36
Views: 6352

As this is the newest thread among the "incredible results with stacked lenses" bombs that have shown up, I'll ask here: Has anyone tried using the ITL200 as the tube lens in these tests with a low cost enlarger lens at the front? I know its far from the cheapest tube lens, but seeing as its widely ...
by AlxndrBrg
Tue Sep 11, 2018 6:29 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dung Beetle?
Replies: 8
Views: 976

Nice shot, but I disagree with id, favouring more. May Beetle - Diplotaxis sordida. Seems to be more in that line going off colouring and overall shape. George But Diplotaxis belongs to the Scarabaeidae, subfamily Melolonthinae? It does look similar to that genus, but this specimen is covered evenl...
by AlxndrBrg
Tue Sep 11, 2018 3:36 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dung Beetle?
Replies: 8
Views: 976

Nice, its a scarabaeid beetle, which includes dung beetles, but this one isnt one, looks like the subfamily Melolonthinae - cockchafers and the like
by AlxndrBrg
Fri Sep 07, 2018 10:59 am
Forum: Equipment Discussions
Topic: Tube Lens Test With MITUTOYO 5X M Plan APO
Replies: 66
Views: 9538

As someone who's about to walk into the world of tube-lenses and infinite-style objectives this is a god sent! The inclusion of different names for the same lenses are really great as well, wading through the swamp of names when trying to purchase things like this can be really frustrating! Some que...