Search found 62 matches

by Hokan
Fri Apr 23, 2021 10:05 am
Forum: General Discussion Forum and Community Announcements
Topic: Resolution Application Note
Replies: 0
Views: 358

Resolution Application Note

Morning Folks, Just read this discussion page from Edmunds Optics. While the math is beyond my limited and diminishing skillset the written explanations were illuminating and improved my understanding of resolution variables in micro/macro photography. https://www.edmundoptics.com/knowledge-center/a...
by Hokan
Sun Feb 17, 2019 3:31 pm
Forum: Equipment Discussions
Topic: Zeiss Axiomat question
Replies: 18
Views: 12794

Zeiss Axiomat Question

Hello Folks, I was the person that created the www.axiomat.org. website, however my ambitions exceeded my available time and limited website skills.The website was overwhelmed by internet trolls, porn hijacking, etc. Beyond my abilities to deal with such crap, I just shut it down. However I still ha...
by Hokan
Tue May 15, 2018 7:00 pm
Forum: Equipment Discussions
Topic: How to find a tube lens for Nikon AZ Plan 5x/0.5 objective?
Replies: 19
Views: 5100

Nikon AZ objective adapters

Hi Ichthyophthirius, I have the Nikon AZ Apo 4x, NA 0.4, WD 20mm, and the Nikon AZ Apo 1x, NA 0.1, WD 35mm. Awhile back www.Rafcamer.com made some tube lens adapters for me. The AZ100 objectives/lenses have a male thread of M38x1.25. The adapters Rafcamera made for my Nikon AZ100 objectives screw on...
by Hokan
Fri Jan 13, 2017 1:59 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: My industrial DIY macro rig
Replies: 6
Views: 3589

Stepper Unit

Morning Folks, Before I get into my stepper unit I need to provide some missing information on my granite plate. I purchased the granite slab from www.grizzly.com. They sell about 11 different sizes and designs of granite plates. Per their description their "toolroom-grade "B" plates have a bilatera...
by Hokan
Wed Jan 11, 2017 3:25 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: My industrial DIY macro rig
Replies: 6
Views: 3589

SOM continued

Folks, Thank you very much for your kind words for my DIY macro/micro rig. (Now called SOM, Son Of Multiphot. I needed a name for my rig after Chris shared his "Bratcam". In deference to his inspiring rig I had no choice to follow his lead.). While building SOM I maintained a photo journal of my pro...
by Hokan
Mon Jan 09, 2017 4:20 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: My industrial DIY macro rig
Replies: 6
Views: 3589

My industrial DIY macro rig

Being of the mechanically challenged and mathematically deficient persuasion I turned to eBay's industrial equipment listings to build my DIY rig. The goals of the stepping component of my rig are: 1. Capable of mounting for stepping different cameras/assorted bellows and tubes using a wide range of...
by Hokan
Wed Nov 16, 2016 12:25 pm
Forum: Equipment Discussions
Topic: Post height needed for vertical set up?
Replies: 19
Views: 3944

Tables, cabinets, and workbench.

Morning JW, Sure. The workbench, on the left side of the photo, is a woodworking bench, made of Maple, with all of the vises removed. The cabinet in the center of the photo, also Maple, was mounted on four 4" 360 degree rotating non-skid casters. The table, on the right side of the photo, has a 2 1/...
by Hokan
Wed Oct 19, 2016 10:28 am
Forum: Equipment Discussions
Topic: I found this today
Replies: 13
Views: 2368

Axiomat Universal Rotary Stage for Mineralogical Specimens

Congrats Choronzon, You are the first Axiomat owner/user I am aware of who has a Axiomat universal rotary stage to use. I would be most curious about the images you will be able to capture with a DSLR of the mineral specimens mounted on your universal rotary stage. I have a Axiomat with a Module R,(...
by Hokan
Tue Sep 06, 2016 9:18 am
Forum: Equipment Discussions
Topic: Post height needed for vertical set up?
Replies: 19
Views: 3944

A bit more extreme DIY stand!

Folks, First off my DIY stand is a child of all the kind folks on photomacrography.net who have so generously shared their thoughts, discussions, and individual DIY stands on this website. I take no credit for any feature or design used in my DIY stand. I only take credit for copying and/or borrowin...
by Hokan
Sat May 28, 2016 9:58 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mathematical formulas for N/A and f aperture value.
Replies: 8
Views: 2756

Formula for f number

Rik, I very much appreciate your quick response and understandable explanations. I have written your formulas into my studio journal for future use. Your ability to explain how your formulas can be used while at the same time showing how they are related to the physics of optics and light is most, h...
by Hokan
Sat May 28, 2016 2:15 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mathematical formulas for N/A and f aperture value.
Replies: 8
Views: 2756

Formula for f number

Hi Rik, Back in my earlier days of photomicrography when I was suffering from NAS, (in remission now), I acquired a Nikon Ultra Micro Nikkor 30mm, effective aperture, according to Nikon, of f/1.2, and magnification 1/25X. Now that I have my DIY macro rig up and running I plan on reversing the lens a...
by Hokan
Sat May 28, 2016 11:53 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mathematical formulas for N/A and f aperture value.
Replies: 8
Views: 2756

Converting effective f number to NA?

So would the same formula, (solving for NA rather then effective f number), be the generally accepted formula to use?

Hokan
by Hokan
Tue Oct 28, 2014 5:16 pm
Forum: Equipment Exchange
Topic: Wanted: illuminator
Replies: 5
Views: 1067

diascopic illuminator with specimen stage

Hello Mike, I have about 75% of one. I have mounted my stackshot on my Multiphot. However be aware that if you mount the stackshot onto the guide rail that normally secures the bellows, Large format or 35mm, the stackshot will not be centered over the normally positioned diascopic illuminator with s...
by Hokan
Tue Oct 28, 2014 2:30 pm
Forum: Equipment Exchange
Topic: Wanted: illuminator
Replies: 5
Views: 1067

diascopic illuminator with specimen stage

Hi Mike, Depending on how you intend to use your Multiphot stand the diascopic illuminator and specimen stage may or may not meet your needs. The diascopic illuminator has severe functional limitations. It was originally designed for a one photograph per use, via film, using the Macro-Nikkor series ...
by Hokan
Tue Oct 28, 2014 1:39 pm
Forum: Equipment Exchange
Topic: Wanted: Zeiss AC Stands and/ or parts
Replies: 17
Views: 6207

Zeiss AC, Zeiss Axiomat

Hi Eddie, Given your email name of Axiomat123 just wondering if you are using a Axiomat and if so how the AC will complement your Axiomat? Don't see the name of Zeiss's Axiomat microscope to often so I am curious. I have two Axiomats, plus far to many surplus Axiomat parts. Again wondering what you ...