Search found 194 matches

by fotoopa
Sun Sep 25, 2016 12:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Isthmia nervosa
Replies: 13
Views: 2947

Excellent cross-view stereo picture! Now you see the shape very well.
I love the cross view version.

Frans.
by fotoopa
Mon Sep 19, 2016 12:26 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chironomidae - Dansmug.
Replies: 20
Views: 20253

Shorter stack times would save much time. Very sure! Through this post, my cycle has now been reduced to 50 images per minute or 1.2 sec/picture. This is now my new default value and that goes really fast (versus 2.9 sec). This has my vote for the image of the month. Amazing, artistic.. Thanks! In ...
by fotoopa
Sun Sep 18, 2016 8:29 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Butterfly wing detail
Replies: 17
Views: 5865

Very interesting test. Your result is clearly positive. It has also kept me busy for several days. Hence the realization of my controllable LED flash in power and light direction. With 10 LEDs I have many opportunities. The direction I have divided in 40 parts under software control. The LEDs always...
by fotoopa
Sat Sep 17, 2016 2:28 am
Forum: Equipment Discussions
Topic: Update glue, inspection and cleaning station.
Replies: 0
Views: 518

Update glue, inspection and cleaning station.

Before going to the stacking, there must be done some preparations. First gluing the insects on a cover glass. Then to the Bino Stereo microscope for inspection and clean up. Cleaning is done with a very fine paint brush (only 2 to 3 hairs). Then it goes to the darkroom for the stack recordings. On ...
by fotoopa
Fri Sep 16, 2016 8:49 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chironomidae - Dansmug.
Replies: 20
Views: 20253

Keith, This 2.7 sec is a very relaxed speed, not the max. I just did a test with 100 recordings. At a rate of 1 sec, I've occasionally a black image ( USB speed to low versus PC load), so a little too fast. I then worked slightly slower with the following information: Mirror-up shutter delay: 500 ms...
by fotoopa
Thu Sep 15, 2016 11:58 pm
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chironomidae - Dansmug.
Replies: 20
Views: 20253

Thanks SW_Perspective and Keith. How long did the shutter stay open? On my own LED rig I open the shutter for 2 sec with the LEDs on for approximately 1.25 sec. Your LED flash is about 1000X more powerful than my bucket light. The shutter stay 500 msec open. The first 420 msec are used to avoid vibr...
by fotoopa
Wed Sep 14, 2016 12:24 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chironomidae - Dansmug.
Replies: 20
Views: 20253

Thanks: GaryB, Jörgen, Beatsy and ChrisR. How on earth did you not get stacking artefacts among the hairs? Was it just lots (and lots and lots) of detailed retouching, or perhaps because you left out-of-focus hairs behind the in-focus ones? Or photoshop? Or all of the above. There was being done ver...
by fotoopa
Tue Sep 13, 2016 6:11 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chironomidae - Dansmug.
Replies: 20
Views: 20253

Chironomidae - Dansmug.

Chironomidae - Dansmug. https://c4.staticflickr.com/9/8233/29025484363_a985211b4a_b.jpg Dansmug - Chironomidae 076532 by Frans , on Flickr Zerene stack Pmax. 229 steps @ 7 um. Nikon D7100 + AFD 200 F5.6 ISO 200 Mitutoyo M Plan APO 10X. FOV: 2.3 mm. FG led flash module 10 channels Direction light D 5...
by fotoopa
Thu Sep 08, 2016 12:15 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Rhingia campestris.
Replies: 2
Views: 889

NeQo wrote:Aha, another member from Belgium!
Nice one!!
Thanks! Yes born and always lived, and this is already 73 years!

Frans.
by fotoopa
Tue Sep 06, 2016 8:52 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Rhingia campestris.
Replies: 2
Views: 889

Rhingia campestris.

The new power LED module is in use. I now use a default optimal profile in order to set the exposure. The profile contains the initial value for the 10 LEDs. This profile can be rotated via software (hardware calculations in the FPGA). This is done with a potentiometer. The software calculated 40 mi...
by fotoopa
Wed Aug 31, 2016 11:31 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Hoverfly Bandzweefvlieg - Epistrophe.
Replies: 4
Views: 1586

Thanks Peter!

Frans.
by fotoopa
Tue Aug 30, 2016 11:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Hoverfly Bandzweefvlieg - Epistrophe.
Replies: 4
Views: 1586

Thanks Jörgen!

Frans.
by fotoopa
Tue Aug 30, 2016 8:59 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Hoverfly Bandzweefvlieg - Epistrophe.
Replies: 4
Views: 1586

Hoverfly Bandzweefvlieg - Epistrophe.

A new LED flash ask for new recordings. Here a hoverfly as test object: https://c4.staticflickr.com/9/8093/29334763755_e2fe4c93ab_b.jpg Bandzweefvlieg - Epistrophe 072186 by Frans , on Flickr And a more close-up crop from the same picture: https://c6.staticflickr.com/9/8297/29256037861_bc7f47c365_b....
by fotoopa
Mon Aug 29, 2016 10:24 am
Forum: Equipment Discussions
Topic: Choice of color temperature for the power LED flash module.
Replies: 49
Views: 13010

Here a composite picture of 40 images with each exposure rotated 9 degrees. Light is rotated in hardware and software into the FPGA realtime. Object, camera and flash do not move during this test. This just in order to see the influence of the exposure. The more bright images are a reflection of the...
by fotoopa
Sun Aug 28, 2016 2:49 am
Forum: Equipment Discussions
Topic: Choice of color temperature for the power LED flash module.
Replies: 49
Views: 13010

Chris, I did it simpler. I now use micro directional control, as with microstepping motors. The intermediate values are calculated. Now I get 40 calculated positions. The angle of light rotation is thus 9 degrees. This really works great! You can set the ideal lighting direction. This now also works...