my setup is: 5dmk2 and light is flash, if You want to see my backstage just let me know. for stacks i use DIY Motorized rail here is non touched picture: https://www.dropbox.com/s/4lq136wv4ivuqwo/666.jpg?dl=0 Excellent images sir!!! Yes, please provide any details on your setup. On the second you m...

pu5z3k, Excellent images sir!!! On the second you mention you "push down" to 4~5X. I assume you used a shorter extension (100mm) from the Raynox to the camera with the Mitutoyo 10X. Also, how far do you have the Mit in front of the reversed Raynox? I have been considering doing some tests to see if ...

Another useful tool is the Nik software plug in for PS. It's reasonably priced and has some good specialized tools for sharpening, HDR and so on. Nik was acquired by Google awhile back.

One caution is the Nik software and PS don't always play nice together, at least CS6 that I have on a Mac.

Mike

Mike - thanks for the analysis. I have vague recollections of that from the dim and distant past! Joy - some resonance (;)) there. I've found I've volunteered at a local school to help a biology teacher take on 13 year old girls with an electronics course. The tech stuff I can handle, there are boo...

Thanks for all the technical info - I will keep it in mind for my next upgrade. Just for fun, I call myself a BSc Electrical Engineering Second Year (Failed) - way back in 1966 when LASERS were a gimmick no-one knew what to do with ! Joyful I am not far behind, got out of HS in 66. We used slide ru...

Chris, Bipolar transistors are noted for this, the ratio of collector to base current called beta increases with temperature, it's called thermal runaway and is destructive if not limited. Most semiconductor junctions have a negative temperature coefficient, which as you indicated causes the LED On ...

Very nice setup. Being an electrical engineer (IC designer) but not an LED expert, I would think the LED would operate better (safer and with less variation) when operated under constant current conditions rather than constant or somewhat constant voltage condition. An LED is basically a semiconduct...

Bob, These are very nice indeed. I am not familiar with this lens, so please excuse my questions. How do you think the sharpness & contrast would hold up from 2 to 6X, or higher, compared to the Mit inf. objectives? I think it might be nice to be able to control the magnification by moving the APO-C...

Saw some dudes building rigs that look like the price of sports cars, got a feeling despite my current technical understanding of how to build my own rails and whatnot that it'll be happening with the help of some engineering savvy friends. Just getting started LOL[/quote] Yeah I got bit by the Pors...

Following Steve's superb subject and images of the hard drive internals (see link below) I thought I might give this a try if I could find a scrap hard drive. We were physically destroying (grinding up platters) many of our older hard drives from our in-house computer network system, so I grabbed a ...

Great shot Mike. That's a cool subject, makes one look around the house and shop for interesting things!!

Mike

Rik,

I'll try some of these suggestions when I get home tonight. This is beginning to make me wonder if 32GB of DRAM is sufficient.

Thanks for the help,

Mike

Rik, Chris, I am sure this has been answered somewhere but I couldn't find it, so my apology in advance. Does the hard drive R/W speed and latency have much to do with the overall speed of large number of stacks (200~500) with large individual TIFF images (110MB)? For example, how much improvement s...

Chris, I got a schematic from Cognisys that has a SBD diode in the switch. This was required to emulate the half press function on the D800 I recall. Cognisys sold me the diode (HP) and I got a cheap remote and wired the phono plug and diode into the switch. This was almost 3 years ago, so the D800 ...

It would seem to be much cheaper to get a "Chinese" remote shutter release and a standard connector from a local shop? You would need to solder a couple of wires.. This is what I did, I got a remote switch and wired in the RCA Phono Plug. For the D800 you will need to add a SBD diode. Check with St...