Search found 2880 matches

by Chris S.
Tue Nov 03, 2009 10:07 am
Forum: Equipment Discussions
Topic: RMS to Leica/Pentax/T2 adapters
Replies: 24
Views: 10984

Thanks, Andrew! But I disagree about the crusty pie--unlike you, I prefer apple. Eric, thanks for getting me started looking down my optics with bright lights--though like Andrew, I'm now finding more things I want to blacken. I also see quite a bit of shine off the barrel of my 10x, and am going to...
by Chris S.
Mon Nov 02, 2009 11:29 pm
Forum: Equipment Discussions
Topic: RMS to Leica/Pentax/T2 adapters
Replies: 24
Views: 10984

Here is an easy (print, cut, trace) pattern for coating your Beljan cone RMS adapter, using Protostar material, to reduce internal flare to nearly nothing: http://www.yousendit.com/download/TzY3aXRFNXZlcExIRGc9PQ The pattern is based on AndrewC's description and my own experiments. Not being gifted ...
by Chris S.
Mon Nov 02, 2009 1:18 pm
Forum: Equipment Discussions
Topic: lens tests 105 VR, 85 PC on max bellows
Replies: 14
Views: 5054

Paul, if I understand your post, you reversed the 85mm but did not reverse the 105mm VR. Is this the case? If so, I'd suspect you might see dramatically better results from the 105mm if you reverse for those magnifications. I have the Nikon 105mm f/2.8 AFD, which is the generation before yours and, ...
by Chris S.
Sat Oct 31, 2009 9:44 pm
Forum: Equipment Discussions
Topic: Camera tethering
Replies: 18
Views: 5487

Like Andrew, I don't find any delay when tethering my Nikon D200 as long as I don't outrun the in-camera buffer. When I used to shoot RAW for my stacks, I did pretty easily outrun the buffer and had to wait while it emptied. My sense was that it took about 40 rapid shots to get ahead of the buffer, ...
by Chris S.
Sat Oct 31, 2009 12:35 am
Forum: Equipment Discussions
Topic: Camera tethering
Replies: 18
Views: 5487

Are there alternatives, for Nikon? And are the camera controls the same, just remote, or are they different? Eg how does mirror-lockup work? Are you still limited to the two-step method or the 1 second delay method, for a D700? Chris R, sorry for my slow response. Once again, work interfered with f...
by Chris S.
Sun Oct 25, 2009 8:45 am
Forum: Equipment Discussions
Topic: Nikon D3s, More Sensitive Than The D3
Replies: 6
Views: 2107

How well I understand, Harold. Shot K25 for years, with K64 in my bag for when I needed a "fast" film. Made the move to E6 ISO 100 films sometime in the 90s. I've missed the latest generation of E6 films you mention, as I've been shooting digital for five years or so. Am tickled silly that my curren...
by Chris S.
Sun Oct 25, 2009 12:13 am
Forum: Equipment Discussions
Topic: Camera tethering
Replies: 18
Views: 5487

Camera tethering

The question of whether or not to use tethering software to tether the camera to a computer has come up in other threads, but I think it's an important question, and is easier to reference if it has its own thread. I'd welcome everybody to weigh in with ideas or images--the more the merrier--but wil...
by Chris S.
Sat Oct 24, 2009 11:57 pm
Forum: Equipment Discussions
Topic: RMS to Leica/Pentax/T2 adapters
Replies: 24
Views: 10984

Thanks, Eric. I ordered some of the Protostar material, and it arrived yesterday. Looks great--for lining my RMS cone and a few other applications. Per your advice, I looked through the Beljan cone for flare. To my naked eye, I did indeed see some reflection. So I'll throw some of this light absorbi...
by Chris S.
Sat Oct 24, 2009 11:32 pm
Forum: Equipment Discussions
Topic: Nikon D3s, More Sensitive Than The D3
Replies: 6
Views: 2107

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: 9373

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: 29833

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: 105613

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: 105613

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: 7856

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: 105613

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...