Search found 1282 matches

by Scarodactyl
Sun Feb 05, 2023 5:19 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 20
Views: 583

Re: Teleconverters in macro

bralex wrote:
Sun Feb 05, 2023 10:49 am
Harald wrote:
Fri Feb 03, 2023 8:25 am
There is more to the macro/micro world than minerals.
Blasphemer!
Let's not be hasty. Maybe he means mineralloids.
by Scarodactyl
Sun Feb 05, 2023 4:14 pm
Forum: Equipment Discussions
Topic: High-extinction-ratio linear polarizer
Replies: 2
Views: 88

Re: High-extinction-ratio linear polarizer

While decent ones are cheap, optical grade high extinction ones are typically more pricey. You might luck out on new old stock edmund optics or thorlabs on eBay.
by Scarodactyl
Sun Feb 05, 2023 10:45 am
Forum: Equipment Discussions
Topic: Axial Lights II (Ghostbuster?)
Replies: 74
Views: 4048

Re: Axial Lights II (Ghostbuster?)

I have seen the ghost. It was in a trinocular olympus sz4045 clone that had been awkwardly converted from 100/0 to 50/50 by glueing the swing arm in place and replacing the first surface mirror with a half mirror. It was fine in most lighting but darkfield showed a significant offset double image.
by Scarodactyl
Thu Feb 02, 2023 7:35 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cross Polarized Plastic
Replies: 13
Views: 785

Re: Cross Polarized Plastic

This award was inevitable and very well-deserved.
by Scarodactyl
Wed Feb 01, 2023 7:54 am
Forum: Photography Through the Microscope
Topic: New Nikon 9K 60MP Full-Frame Microscope Camera
Replies: 3
Views: 172

Re: New Nikon 9K 60MP Full-Frame Microscope Camera

Too bad it's monochrome. Should be amazing for some applications though.
by Scarodactyl
Tue Jan 31, 2023 9:08 am
Forum: Equipment Discussions
Topic: Cleaning dust from a camera sensor
Replies: 14
Views: 456

Re: Cleaning dust from a camera sensor

Wet swabs definitely leave a mess if you use the tiniest bit too much fluid, but they have worked great for me after I figured that out. Then again your mileage may vary at higher MP or larger sensors, I'm just using a canon t7.
by Scarodactyl
Tue Jan 31, 2023 8:42 am
Forum: Equipment Discussions
Topic: Cleaning dust from a camera sensor
Replies: 14
Views: 456

Re: Cleaning dust from a camera sensor

My local camera store cleans sensors free but they had a newbie do mine and she used too much fluid and left it worse than it started. Fortunately the one use swab kits have worked great for me.
by Scarodactyl
Sun Jan 29, 2023 7:59 am
Forum: Equipment Discussions
Topic: Optimal DSLR cameras vs 35mm film resolution
Replies: 11
Views: 547

Re: Optimal DSLR cameras vs 35mm film resolution

4mp is certainly not enough to get the most out of a zeiss standard. If you are getting badly smeared corners it more likely indicates a problem with the photo setup, which is an easy problem to run into with zeiss. 18mm isn't a huge FoV, limiting relative to a modern objective, but the zeiss object...
by Scarodactyl
Sat Jan 28, 2023 6:53 pm
Forum: Equipment Discussions
Topic: Optimal DSLR cameras vs 35mm film resolution
Replies: 11
Views: 547

Re: Optimal DSLR cameras vs 35mm film resolution

One big factor not really addressed here are the eyepiece corrections. Zeiss 160mm objectives are not fully complete in and of themselves, they require a particular eyepiece which adds final corrections to the image. An ideal camera setup will use a Zeiss photo eyepiece and a relay lens, which will ...
by Scarodactyl
Tue Jan 24, 2023 8:52 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 20
Views: 583

Re: Teleconverters in macro

For sure, but it's never too early to adjust your expectations for sharpness when entering the micro arena
by Scarodactyl
Tue Jan 24, 2023 8:30 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 20
Views: 583

Re: Teleconverters in macro

Yes, it will give you 14x. You will still be well within the reasonable magnification for the objective's numerical aperture.
by Scarodactyl
Mon Jan 23, 2023 11:06 pm
Forum: Equipment Discussions
Topic: Variable Magnification Mitutoyo 5x
Replies: 14
Views: 557

Re: Variable Magnification Mitutoyo 5x

What I don't understand about this setup is that once the Raynox is away from infinity focus, how the system can manage to focus anything. An infinity objective doesn't only work when producing an image focused at infinity, it is just optimized for those conditions. You can use a mitutoyo 5x with n...
by Scarodactyl
Mon Jan 23, 2023 11:35 am
Forum: Equipment Discussions
Topic: Variable Magnification Mitutoyo 5x
Replies: 14
Views: 557

Re: Variable Magnification Mitutoyo 5x

It will certainly change working distance, it's just having the mitutoyo act as a finite objective.
by Scarodactyl
Sun Jan 22, 2023 10:24 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A Canon MPE-65 alternative?
Replies: 10
Views: 556

Re: A Canon MPE-65 alternative?

This Leitz/Wild lens (assuming it's the same across different contexts) can sometimes be had for much less than 300 dollars as well. These results are impressive and I am excited to test mine too when I get a chance, I even have the adapters from setting one up for afocal.