Search found 2488 matches

by mawyatt
Sun Jan 18, 2015 3:23 pm
Forum: General Discussion Forum and Community Announcements
Topic: Help with reply
Replies: 2
Views: 1622

Thanks Rik
by mawyatt
Sun Jan 18, 2015 11:51 am
Forum: General Discussion Forum and Community Announcements
Topic: Help with reply
Replies: 2
Views: 1622

Help with reply

Hi Chris, Rik, others, Not sure where to post this. I can't seem to get a reply to my private message to be sent. I tired 3 times with no luck. Seems the reply is stuck in the "Outbox" and does not show being sent in the "Sentbox". I have replied before to Chris (12/16), it worked then. I only have ...
by mawyatt
Fri Jan 16, 2015 9:26 am
Forum: Equipment Discussions
Topic: Tube lens question
Replies: 6
Views: 1269

Rik,

With shielding the Raynox tube lens, do you see any vignetting effects on a full frame sensor? I already have some vignetting with my setup, (Mit objective to Raynox reversed with cone adapter, then from reversed Raynox 42mm extensions to D800 FX camera body.

Mike
by mawyatt
Fri Jan 16, 2015 7:52 am
Forum: Equipment Discussions
Topic: Tube lens question
Replies: 6
Views: 1269

Chris, Thanks. I'll order some hi-tack flocking today. The other day I stopped by Michael's Art supplies and picked up some black thick drawing paper, suspecting that lens assemble internal reflections might be a problem. I might try this until the proper material arrives. Did you need to need to sh...
by mawyatt
Thu Jan 15, 2015 4:32 pm
Forum: Equipment Discussions
Topic: Tube lens question
Replies: 6
Views: 1269

Tube lens question

Hello, Has anyone had issues with internal reflections within the makeshift lens tube which is made up of low cost 42mm screw sections? I am referring to the technique of using an objective with an adapter to a reversed Raynox as a "tube lens", then an adapter to a 42mm threaded screw section that i...
by mawyatt
Sat Jan 10, 2015 1:46 pm
Forum: Photography Through the Microscope
Topic: microchip (img+)
Replies: 14
Views: 1038

Very nice image. Very clear and sharp and your lighting is perfect with the ping pong ball diffused Ikea LED lamps!!

Mike
by mawyatt
Sun Jan 04, 2015 6:54 pm
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

Just a shot in the dark. But check to see in your D800/e camera setting if you have 'Long Exposure Noise Reduction' set as ON. I suppose it depends if you are using Live View On during creating the whole stack, if this might be your problem What happens is, if this is set to ON, the camera will tak...
by mawyatt
Sat Jan 03, 2015 8:45 pm
Forum: Equipment Discussions
Topic: CogniSys StackShot "Start Again"
Replies: 9
Views: 2419

George,

I used a long USB extension cable with the Stackshot controller and MacBook Pro laptop. This worked with Zerene Stacker controlling Stackshot.

Mike
by mawyatt
Tue Dec 30, 2014 11:27 am
Forum: Equipment Discussions
Topic: Nikon Nikkor Ai-S Micro Nikkor 200mm F4 ***EX*** AIS
Replies: 9
Views: 1622

Denis, Peter, I used a Nikon 70-200 VR as a "tube" lens with the Mit objectives. After some reviews here by folks I decided to try the Raynox reversed as the "tube" lens. These are $65 at B&H, and the other adapters only amount to $50 or so. The Raynox was a little sharper than the 70-200 with the M...
by mawyatt
Tue Dec 30, 2014 7:00 am
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

Interesting, Mike. Having never shot TIFF, I hadn’t thought about how much bigger TIFF files are than raws, but of course, they are. Is there any reason you would want to shoot in TIFF? I use both raw and jpeg workflows for macro stacking, but have never found a reason to produce TIFF files in-came...
by mawyatt
Mon Dec 29, 2014 6:09 pm
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

I suspect that Canon has similar issues with the buffer overflowing. Sure, any camera will do this. Whenever system throughput is less than bytes/frame * frames/sec, something is going to get dropped. Refusing to take individual frames is the usual behavior. All the other alternatives like writing ...
by mawyatt
Mon Dec 29, 2014 4:58 pm
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

I got exactly 250 exposures but still a few very thin OOF ribbons which are due to vibration and not sequence issues. I watched the camera/memory busy LED and didn't see any missed trigger commands. At least I understand the buffer memory speed issues now and can hopefully avoid this in the future. ...
by mawyatt
Mon Dec 29, 2014 11:17 am
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

I guess the massive files from these 36MP cameras at 14 bits per pixel are choking the memory buffer and cards. I am making a run of TIFF now with a total 7.5 seconds between shots, this causes the green camera/memory busy LED just go out before the next trigger command, so no overlap. I think the o...
by mawyatt
Mon Dec 29, 2014 9:40 am
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

I think I have found the problem, or at least narrowed down the possibilities!! I did download the latest firmware..thanks Rik. BTW this version did not help with the original problem but did address the LiveView function misbehavior. Now you can use LiveView and the mirror will stay up as it should...
by mawyatt
Mon Dec 29, 2014 6:57 am
Forum: Equipment Discussions
Topic: D800 Remote trigger
Replies: 25
Views: 3235

A firmware issue is certainly suggested. Another thing to check is that the Focus Mode Selector switch on the camera is set to "M" ("Manual focus"). [I suspect "C" ("Continuous servo autofocus") would also work, but have not checked). The mode you don't want this kind of work is "S" (Single Servo A...