Search found 84 matches

by Geopressure
Sun Apr 14, 2019 7:15 am
Forum: Equipment Discussions
Topic: Another modified Wemacro stand
Replies: 16
Views: 5901

Thanks for all the positive comments guys :D It makes for a nice compact unit.

Lou, I didn't realize the micro-mate allowed such small steps..very intriguing. I need to find out how many microns per revolution my fine focus has.

Brad
by Geopressure
Sat Apr 13, 2019 8:10 pm
Forum: Equipment Discussions
Topic: Another modified Wemacro stand
Replies: 16
Views: 5901

Another modified Wemacro stand

After reviewing some of the remarkable rigs people have constructed, I decided that I needed to improve my setup. I had a machine shop precisely drill four holes in the base of my vertical WeMacro stand. This allowed my focus block/frame (from an old Olympus CHBS microscope) to be bolted on. The bac...
by Geopressure
Mon Apr 08, 2019 4:36 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dioptase on Calcite
Replies: 9
Views: 1988

Thanks..Christmas Mine looks like a good possibility.
by Geopressure
Sat Apr 06, 2019 7:30 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dioptase on Calcite
Replies: 9
Views: 1988

Those were the days for collecting. Not many easy pickings left anymore.
by Geopressure
Fri Apr 05, 2019 4:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dioptase on Calcite
Replies: 9
Views: 1988

Thanks..I had to borrow it from a friend!
by Geopressure
Fri Apr 05, 2019 3:27 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dioptase on Calcite
Replies: 9
Views: 1988

The sample is from Arizona, not sure which mine. Beautiful material. Field of view is about 2.2mm wide. The original image looks slightly sharper before down-sizing for the post. Thanks for the comments.
by Geopressure
Fri Apr 05, 2019 12:42 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Dioptase on Calcite
Replies: 9
Views: 1988

Dioptase on Calcite

Thought I'd post this stack..shot with a T7i camera w LED lighting using a 10X Mitutoyo objective on 200mm Nikon tube lens. The green Dioptase crystals produced strong halos and shadows so I suppressed some of them by de-saturating the Cyan in those areas. A form of cheating I suppose? Comments welc...
by Geopressure
Tue Aug 28, 2018 8:33 am
Forum: Equipment Discussions
Topic: Sony A7Riii Stripes
Replies: 24
Views: 2745

Sorry I have sent the A7Riii camera back and can't provide any new images, but here is a crop with contrast and clarity boosted. No sharpening. This is a JPEG stack taken using EFSC at 1/15 sec with LED lighting. You can see the diffuse "waffle" or striped pattern I referred to. It might help to sta...
by Geopressure
Sun Aug 26, 2018 7:42 pm
Forum: Equipment Discussions
Topic: Sony A7Riii Stripes
Replies: 24
Views: 2745

I believe you are correct about the ports. The A7Riii does indeed have both a USB C port for tethering, and a Sony USB "multiport" for shutter triggering. It works well with the Wemacro rail as long as you have a Sony connector cable. In my previous post Beatsy explained that he uses an Infrared rem...
by Geopressure
Sun Aug 26, 2018 1:07 pm
Forum: Equipment Discussions
Topic: Sony A7Riii Stripes
Replies: 24
Views: 2745

Yes, I saw there is some software that works on RAW files, but the thought of another processing step doesn't appeal to me. If anything, Sony should fix this in-camera.
by Geopressure
Sun Aug 26, 2018 11:00 am
Forum: Equipment Discussions
Topic: Sony A7Riii Stripes
Replies: 24
Views: 2745

Sony A7Riii Stripes

I have been encountering a diffuse waffle pattern, visible in JPEG stacks as light colored noise over a dark background. I assume this is the same basic "PDAF" (phase detection auto focus) issue discussed elsewhere. Admittedly this is not a complete show stopper as it can largely be edited out, howe...
by Geopressure
Sun Jul 22, 2018 7:30 am
Forum: Equipment Discussions
Topic: Shutter triggering on a Sony A7Riii
Replies: 6
Views: 1044

Alnitak: Thanks for your clear answer! This is very helpful. It seems there are two good options here.
by Geopressure
Fri Jul 20, 2018 11:57 am
Forum: Equipment Discussions
Topic: Shutter triggering on a Sony A7Riii
Replies: 6
Views: 1044

Wow, those were rapid replies...

Beatsy: Thanks for your detailed response! It sounds like the IR remote is a
great solution.

mawyatt: I do use the Wemacro stand and find it works very well. Sorry if I
was unclear.
by Geopressure
Fri Jul 20, 2018 9:11 am
Forum: Equipment Discussions
Topic: Shutter triggering on a Sony A7Riii
Replies: 6
Views: 1044

Shutter triggering on a Sony A7Riii

Hi All, I am considering the purchase of an A7Riii Sony mirror-less camera to be used with a Wemacro rail (a vertical setup on the Wemacro stand). I'm currently using a Canon T5i and enjoy using the EOS utility software for tethering to a PC in Live View. I have read a few posts by people using an I...
by Geopressure
Thu Dec 07, 2017 11:37 am
Forum: Equipment Discussions
Topic: Mitutoyo M Plan APO 20X question
Replies: 14
Views: 2253

Thanks Chris, I greatly appreciate your experienced input. It will help me make a much better informed decision. What a great forum!