Search found 2887 matches

by Chris S.
Sat Oct 24, 2009 11:32 pm
Forum: Equipment Discussions
Topic: Nikon D3s, More Sensitive Than The D3
Replies: 6
Views: 2111

Thanks, Harold, for bringing things like this, that I for one might have missed, to our attention. However, I nearly always do my macro work at base ISO, so suspect that high ISO capability would do me little good in the macro arena. In fact, while my D700 shoots very well up to ISO 6400 and beyond,...
by Chris S.
Sat Oct 24, 2009 11:24 pm
Forum: Equipment Discussions
Topic: Stepping your Stage?
Replies: 10
Views: 9410

Excellent idea, Chris R., to separate this discussion out into a different thread. Much needed. (And sorry it's taken me so long to add my two cents.) Elf, your advice to separate my lens from the camera movement is interesting, but I'm not sure I see the point if I don't want to stitch panoramas. A...
by Chris S.
Sat Oct 24, 2009 10:50 pm
Forum: Equipment Discussions
Topic: Desktop automated focus stacking setup
Replies: 43
Views: 29986

Elf, I'm very impressed with your engineering and execution. If I may ask respectfully, do you find that your ability to make stitched panos is enough of an advantage to justify the complexity of the rig? On the upside, I definitely see how you can get higher pixel count images without parallax erro...
by Chris S.
Fri Oct 23, 2009 9:50 pm
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Possibly the neatest method for stepping a focus mechanism is as used by Saphicon http://www.saphicon.com/focus-drive-integrated-s.htm eg on an Olympus : http://www.tofrainc.net/mounting-focus-drive-olympus-BH2.htm With a cheapie stepper motor you get 200 steps/rev, which is 1 micrometer per step f...
by Chris S.
Fri Oct 23, 2009 9:39 pm
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Elf, I apologize for my slow response. Work snuck up on me and diverted me from fun things like photomacrography. I'll add comments about steppers to http://www.photomacrography.net/forum/viewtopic.php?t=8261 Many thanks for that excellent post. Will ask questions about your approach there. I'm assu...
by Chris S.
Fri Oct 23, 2009 8:56 pm
Forum: Equipment Discussions
Topic: 3 axis rotation mount with goniometric tilt
Replies: 12
Views: 7976

Brilliant, Andrew! (Sorry I'm so late I'm commenting, but was suddently and violently beset by work). Yours is an elegant way of getting all the axes at less expense. If I hadn't lucked out and found an inexpensive set of matched goniometers, I'd copy your approach. Doubt I'd have thought of it on m...
by Chris S.
Thu Oct 08, 2009 10:08 am
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Elf, Did you add a stepper motor to a microscope focus block, or to translation stage? Am right now noodling over a good way to mount one to a focus block. If you've done that, I'd love to see your approach. Have considered the Arduino, but am leaning toward doing this on a full-bore windows compute...
by Chris S.
Thu Oct 08, 2009 9:21 am
Forum: Equipment Discussions
Topic: RMS to Leica/Pentax/T2 adapters
Replies: 24
Views: 11047

My pleasure, NU! Very nice to hear that some of it was useful.

I'm betting you'll really like your Beljan adapter.

--Chris
by Chris S.
Thu Oct 08, 2009 8:11 am
Forum: Equipment Discussions
Topic: RMS to Leica/Pentax/T2 adapters
Replies: 24
Views: 11047

Another nice one, which I use and like, is from Beljan Manufacturing in Pennsylvania, USA, which sells as eBay vendor "beljanmfg". It's a beautifully-machined, cone-shaped adapter that sells for $50 shipped within the U.S. I see that Beljan doesn't have any listed for sale at this moment, but has so...
by Chris S.
Thu Oct 08, 2009 7:45 am
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

At last he comes out of the dark, well worth the wait :) Thanks, Andrew, and sorry about the long wait. I was committed to a huge project for a valued client, and working days, nights and weekends. Just finished, and wrote up my post. One finds oneself not wanting to write a hurried or slipshod pos...
by Chris S.
Thu Oct 08, 2009 7:27 am
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Seriously "groovy", if that doesn't lose something in the "translation"... LOL. I'd think you were "upstaging" me with your comment, and might want to "bellow" about it, but will try to maintain an "objective focus." To address Rik's positioning "point", I think there would need to be a low profile...
by Chris S.
Thu Oct 08, 2009 7:04 am
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Incredible piece of equipment -- very pretty! Thanks, Rik, very much. While I think it’s pretty too, and must confess to taking some pleasure in that, let me emphasize that I'm looking for function, rather than form. The black powder coating, for example, may look nice—but my intention was to preve...
by Chris S.
Wed Oct 07, 2009 11:13 pm
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Thanks, Eric! Got to say that adding the rotation stage/goniometer turned subject positioning, for me, from a frustration into fun. Before, I could never seem to move things just the right amount, generally bumping a specimen a bit too much or too little with any attempted adjustment. I also like ho...
by Chris S.
Wed Oct 07, 2009 2:42 pm
Forum: Equipment Discussions
Topic: Another macro rig (the "Bratcam")
Replies: 20
Views: 106181

Another macro rig (the "Bratcam")

Note: The Bratcam continues to evolve, and since this initial post, has had significant updates. These are described in separate threads, which can be found via links at the end of this post. As promised, I’m posting my version of a macro rig. A couple of friends dubbed it the “Bratcam” (just why i...
by Chris S.
Fri Sep 18, 2009 1:40 pm
Forum: Equipment Discussions
Topic: Upgrade of camera body
Replies: 11
Views: 2364

Bruce, for your uses, I don't think this is a hard question. The D200 is a solid, pro-oriented camera that has mirror lockup. The D90 is an amateur camera without mirror lockup, but it has video. Do you want video? Doesn't sound like it. Want mirror lockup? You betcha! At their base ISOs (that is, t...