Search found 318 matches
- Fri Feb 26, 2016 3:07 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Shutterless stack shooting with Magic Lantern
- Replies: 32
- Views: 12093
If there is a way to trigger flash from inside Magic Lantern (which I am not sure of), one could simply introduce a flash delay constant into ML. There is no way for them to trigger flash in ML. The only thing it can do is disable live view to enable the flash to work, which most canon cameras have...
- Fri Dec 25, 2015 7:51 am
- Forum: Equipment Discussions
- Topic: Fast Stacker (Arduino based automated focus stacking rail)
- Replies: 129
- Views: 44509
my Canon 50D works okay when it's 50 ms, but looks like when mirror lock is used I need at least 100 ms. To add to this, in live view, to reliably fire the shutter it requires about a 200-400ms pulse to fire consistently for my 500d and my old 60d. It was not consistent either. It would fire someth...
- Fri Dec 25, 2015 7:24 am
- Forum: Equipment Discussions
- Topic: SimpleStacker -- Is this Familiar?
- Replies: 2
- Views: 790
It looks like the person is in the middle of writing their pages for their project. They do list several other DIY stackers on the front page though, many of which I am familiar with (including my own!). I suspect the page is fair new and still being written since my project was only posted about 2 ...
- Fri Dec 18, 2015 3:05 pm
- Forum: Equipment Discussions
- Topic: flocked light blocking materiel
- Replies: 19
- Views: 3014
Solid graphene is best! It has a "not there" quality, even under a bright light. There are graphene "dry lubricants" that the solvent evaporates from leaving behind a film of graphene. The stuff I have looks pretty matte. Perhaps this could be something for you to explore further? Maybe there is a ...
- Wed Dec 16, 2015 4:59 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Tabletop setup for stacking at oblique angles
- Replies: 9
- Views: 4129
The objective looks really close to the surface there. I assume that is the shallowest angle you could achieve because of that? My current set up was made so it can be adjusted for various angles using a microscope focus block as its mechanism( http://www.photomacrography.net/forum/viewtopic.php?t=2...
- Mon Nov 16, 2015 11:08 am
- Forum: General Discussion Forum and Community Announcements
- Topic: Supernumerary rainbows: light wave interference in the sky
- Replies: 8
- Views: 4727
- Sat Nov 07, 2015 2:21 pm
- Forum: Equipment Discussions
- Topic: Design of collimated light source optical system
- Replies: 4
- Views: 734
Maybe this tool would help you with sketching out ideas to build your system. http://www.edmundoptics.com/technical-resources-center/eo-tech-tools/tools/koehler.cfm?new=1&techtoolID=4 It doesnt help really with figuring out any side emission issues, but if you have a rough idea maybe it will help na...
- Thu Nov 05, 2015 4:04 pm
- Forum: Equipment Discussions
- Topic: Fast Stacker (Arduino based automated focus stacking rail)
- Replies: 129
- Views: 44509
(With my 5:1 magnification setup, DoF is 50 um, and no point to go beyond 5:1 as I am hitting the theoretical diffraction limit for optical photography, with one pixel ~ 1um) I am sorry, but this does not make sense to me. One can very easily go above 5:1. What is it about your set up that makes yo...
- Thu Nov 05, 2015 3:57 pm
- Forum: Equipment Discussions
- Topic: Fast Stacker (Arduino based automated focus stacking rail)
- Replies: 129
- Views: 44509
The more I look into the Cognisys device, the more ideal my own design looks :) That is the good thing about building your own devices. You get to work on the things that are important to you and what you need. You also get to make it as complex or as simple as you want. Your project looks well wri...
- Wed Nov 04, 2015 9:58 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Robotic specimen holding system. Is it worth it?
- Replies: 6
- Views: 1752
I have thought about building an automated positioned. I have several designs in mind that I think would be very good for working with a single specimen at a time. However it would require custom machining, and since I do not have access to the needed equipment, having parts made would be some where...
- Sat Oct 03, 2015 1:26 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Bees in a Wallflower Series
- Replies: 4
- Views: 1400
Really nice photos. The shadow from the heavy motion in the second post looks liek a drop shadowsx added in from photoshop almost :lol: Have you thought about doing it the other way around? Instead of shadowing the subject, have another flash on the background? Likely a bulkier set up, but if you ar...
- Thu Sep 17, 2015 8:27 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Bright videos: LED or sequencial burst photos lit by flash
- Replies: 38
- Views: 5308
Thank you, TheLostVertex. I don't know much about photography. I thought 1/200th second flash duration is quite fast? And I don't understand why it will blur due to vibration? Charles Krebs' article on mirror lock up shows some nice images of blur from shutter movement and mirror movement http://ww...
- Thu Sep 17, 2015 5:39 pm
- Forum: Equipment Discussions
- Topic: Hot mirror for light: any experience?
- Replies: 19
- Views: 2590
Re: Hot mirror for light: any experience?
I'm not worrying about white balance (hot mirror glasses have turquoise tint) - it should be set to custom profile anyway. White balance can have an effect on image channel noise. Since each channel's gain is changed to produce a different color temp, extreme white balance and tint changes can caus...
- Thu Sep 17, 2015 5:29 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Bright videos: LED or sequencial burst photos lit by flash
- Replies: 38
- Views: 5308
Thank you! I saw that 0.5 sec cycling time and was wondering about how exactly they rate that (is it rated at 1/128, at which power the flash should recycle the fastest?)? That is not what he means. he means that the duration of the flash pulse is slow. Depending on the studio strobe, many are in t...
- Thu Sep 10, 2015 12:57 pm
- Forum: Equipment Discussions
- Topic: My Rig (still going) and any critiques (please) are welcome.
- Replies: 46
- Views: 10936
I did test it by holding the whole setup vertically with my Canon 550D + extension tubes + 10x objective, the small motor + the driver hold up nicely, of course, since it is doing microstepping, I can not tell if there is any mis-steps. Thats good. The torque drops substantially from microstepping,...