Search found 74 matches

by AlxndrBrg
Thu Jun 07, 2018 12:54 pm
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Female parasitic wasp - possibly Dusona sp.
Replies: 9
Views: 7823

Nice, but its not an Ichneumon sp., nor is it Ichneumonini or Ichneumoninae, but it belongs to the Ichneumonidae though :wink:
Should be the subfamily Campopleginae, something like the genus Dusona.

Oh, and its a female, the ovipositor is quite short, but visible
by AlxndrBrg
Mon Jun 04, 2018 2:50 pm
Forum: Equipment Discussions
Topic: Cube beam splitter and through-objective illumination
Replies: 6
Views: 5481

Have you tried changing the material that is in contact with the surface that produces the reflection? I assume its currently air, or am I wrong? In the image with the red and green arrows, what happens if you instead stick some black tape to it, maybe that could reduce the reflections? Alternativel...
by AlxndrBrg
Sun Jun 03, 2018 10:39 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Where is the limit?
Replies: 13
Views: 3425

That quality increase is astounding!

If that program/technique could be made available to the rest of us it would be great! Is it a proprietary thing, or something we can look forward to in the future?
by AlxndrBrg
Sat Jun 02, 2018 10:39 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp portraits
Replies: 8
Views: 1835

Did a real test; at 2.3x mag (which is around 100 mm from the sensor to the Lomo's shoulder) images taken from a single, totally unprocessed image that shows the vignetting and the difference in sharpness between the corner and centre. Saved as quality 12 jpg's, so they should be close to the origin...
by AlxndrBrg
Sat Jun 02, 2018 9:48 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp portraits
Replies: 8
Views: 1835

Hard to say as I used a black background for these sets, but there appears to not be any darkening of the corners. When I pushed up the histogram to view the background there's no vignetting, as the background isnt 0/0/0 black it would have shown up I'd think. (this is not one of the images used in ...
by AlxndrBrg
Sat Jun 02, 2018 8:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp portraits
Replies: 8
Views: 1835

Thanks! Yes, I'm very happy with how far its possible to push the little Lomo, both up and down in magnification. This image is at 2.3x http://www.photomacrography.net/forum/userpix/3940_Odynerus_melanocephalus_F_ABxxxx_Lernacken2_copy_1.jpg Full size: https://c2.staticflickr.com/2/1737/28578889618_...
by AlxndrBrg
Thu May 31, 2018 9:07 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp portraits
Replies: 8
Views: 1835

Wasp portraits

Two hymenoptera I've collected recently and shot in a fresh state, its a real treat to image them as they appear when alive, instead of the old dried collection specimens. http://www.photomacrography.net/forum/userpix/3940_Chrysis_impressa_F_ABxxxx_Helenholm180530_1.jpg Chrysis impressa Schenck, 185...
by AlxndrBrg
Mon May 28, 2018 2:20 pm
Forum: Equipment Exchange
Topic: BUYING - microscope stage
Replies: 0
Views: 1320

BUYING - microscope stage

I'm on the hunt for a microscope stage to use as the base for my stacking rig, something like an old Nikon Optiphot or similar. So any old microscope with broken optics, or simply no optics left, would do fine - I just want the mounting head with the RMS threads and the focusing rail to be intact. I...
by AlxndrBrg
Sun May 27, 2018 3:56 pm
Forum: Equipment Discussions
Topic: Microscope eyepiece question
Replies: 11
Views: 2207

yes, the ribbed "screw" on the left ocular is the diopter, as long as the oculars are level with each other (horizontally) you'll be fine
by AlxndrBrg
Sun May 27, 2018 3:51 pm
Forum: Photography Through the Microscope
Topic: Tree hopper . . .
Replies: 4
Views: 1160

Yes, it belongs to the Auchenorrhyncha, for sure, but its a nymph so its a bit hard to tell exactly where it belongs. I think I can make out some carinae between the eyes, so maybe the family Delphacidae?
by AlxndrBrg
Wed May 23, 2018 8:51 am
Forum: Equipment Discussions
Topic: No name ebay focusing block
Replies: 40
Views: 7371

I would be a bit careful with these products, although I might just have been unlucky when it comes to mine. I dont actually have the fine focus block version, but the coarse one that shipped together with a Olympus stereomicroscope I got on Ebay. The white stand and the moving aluminium focus block...
by AlxndrBrg
Fri May 11, 2018 9:05 am
Forum: Equipment Discussions
Topic: Canon 6D silent mode problems, vibrations at exposure start
Replies: 43
Views: 5819

Clever setup :D Like the use of the micropositioners at right angles for the subject. Were these adapted? Best, Thanks, its just a cheap Microscope X/Y-stage from Ebay, mounted on a wood block. This in turn is mounted to the Proxxon table using the heads on two screws that slides into the T-grooves...
by AlxndrBrg
Fri May 11, 2018 8:57 am
Forum: Equipment Discussions
Topic: Canon 6D silent mode problems, vibrations at exposure start
Replies: 43
Views: 5819

Alex, I think that you can't grab relevant conclusions from memories of a single observation. My advice is to perform true tests in controlled situations changing only one variable at once (camera mode, shutter speed, subject positioning...) and writing your notes immediately after. That's a fair p...
by AlxndrBrg
Thu May 10, 2018 2:15 pm
Forum: Equipment Discussions
Topic: Canon 6D silent mode problems, vibrations at exposure start
Replies: 43
Views: 5819

Also weird was the initial report that "After changing the diffuser and subject (and maybe some settings on the camera, I sadly cant recall), the image at 1/15th of a second suddenly got sharp 2 minutes later " (emphasis added). --Rik It was likely because the mounted specimen 2 minutes later was n...
by AlxndrBrg
Thu May 10, 2018 6:25 am
Forum: Equipment Discussions
Topic: Canon 6D silent mode problems, vibrations at exposure start
Replies: 43
Views: 5819

Thanks again for the informative discussion, and sorry for my absence have been busy lately. Just had a look at the sensor while taking a test shot - and no, there is no curtain moving at all at the exposure start, but despite this some vibration can be felt and a faint click. So I guess its just so...