Search found 1593 matches

by Scarodactyl
Thu Feb 17, 2022 12:02 am
Forum: Equipment Exchange
Topic: Items for sale Updated 4/27/22
Replies: 17
Views: 2814

Re: Items for sale

Ugh. So many tempting deals and yet so little space and need for them.........
No chance you have one of the heads/head adapters for the monozoom 7, is there?
by Scarodactyl
Wed Feb 16, 2022 11:49 pm
Forum: Equipment Discussions
Topic: Use of cross-polarization
Replies: 36
Views: 4368

Re: Use of cross-polarization

From what I understand higher NA optics don't mind stuff behind them as much, presumably related to their much increased depth of focus. I had another setup which used a simple 25mm camera polarizer above the objective--a 50x/0.55 didn't mind its prescence one bit but a mitutoyo 1x/0.025 pitched a f...
by Scarodactyl
Wed Feb 16, 2022 6:56 pm
Forum: Equipment Discussions
Topic: Use of cross-polarization
Replies: 36
Views: 4368

Re: Use of cross-polarization

If you put them in infinity space it isn't a big deal. You can get away with all sorts of stuff in infinity space. I just put one of the stiff EO film sheets in place of a delaminated glass one in a microscope and it seems to work just fine. If you're dealing with lower NA optics it may be less suit...
by Scarodactyl
Tue Feb 15, 2022 12:54 pm
Forum: Photography Through the Microscope
Topic: Gigapixel Crystal Art
Replies: 4
Views: 770

Re: Gigapixel Crystal Art

Very nice work!
I have to ask, is it annoying to deal with immersion objectives in this context or does it end up being a non-issue?
by Scarodactyl
Tue Feb 15, 2022 11:18 am
Forum: Equipment Exchange
Topic: Looking for a 10x21 Wild photo eyepiece--found
Replies: 4
Views: 983

Re: Looking for a 10x21 Wild photo eyepiece

Glad to hear it! Sorry I never got back to you about mine, but I suspect it was better to find a local copy.
Please post resultant photos when you get them!
by Scarodactyl
Mon Feb 14, 2022 1:01 pm
Forum: Equipment Discussions
Topic: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online
Replies: 11
Views: 1086

Re: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online

Ahhh, of course. I just saw 'Mejiro' and forgot they might make more than one lens. The Z6 is nice to use but (as I've done more critical testing on it) the coverage isn't amazing, particularly at lower magnifications. That might be improved with a better tube lens situation. Still, it's the right t...
by Scarodactyl
Mon Feb 14, 2022 9:46 am
Forum: Equipment Discussions
Topic: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online
Replies: 11
Views: 1086

Re: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online

If it were parfocal I would be considering selling my Leica Z6.

So does the componon with the mejiro as a tube lens work better than the mejiro alone? As I recall the mejiro seemed pretty exceptional on its lonesome.
by Scarodactyl
Mon Feb 14, 2022 9:45 am
Forum: Equipment Discussions
Topic: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online
Replies: 11
Views: 1086

Re: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online

If it were parfocal I would be considering selling ky Leica Z6.
by Scarodactyl
Sun Feb 13, 2022 11:41 pm
Forum: Equipment Discussions
Topic: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online
Replies: 11
Views: 1086

Re: Laowa 25mm f/2.8 2.5-5x Macro Lens Test Online

Another really cool test! I know we've been hearing great reviews of this one for a while but it's really aomething to see it laid out on a wafer.
I was a bit surprised the mejiro was paired with a componon--does it perform better that way? I thought 2.5x was in its normal magnification range.
by Scarodactyl
Fri Feb 11, 2022 6:41 pm
Forum: Equipment Discussions
Topic: Nikon MM-11 (fine focus freewheeling)
Replies: 7
Views: 759

Re: Nikon MM-11 (fine focus freewheeling)

I use a different measurescope. My fine focus does drift a bit some times but I've never had it freespin.
by Scarodactyl
Wed Feb 09, 2022 1:56 pm
Forum: Photography Through the Microscope
Topic: MOTOROLA MPC 17AT85
Replies: 2
Views: 482

Re: MOTOROLA MPC 17AT85

These are fun shots. You should consider setting up epi DIC--you have the exact right targets to get the most enjoyment out of it.
by Scarodactyl
Tue Feb 08, 2022 11:23 pm
Forum: Equipment Discussions
Topic: Nikon's New Lambda D Objectives
Replies: 14
Views: 1625

Re: Nikon's New Lambda D Objectives

The original lambda 4x was noticeably better in the corners than the finite ones in Robert's test, but there was still room for improvement. The centers have been pretty much perfect since the finite era so it's hard to imagine improving on that aspect. I'd love to see a test!
by Scarodactyl
Tue Feb 08, 2022 9:58 am
Forum: Equipment Discussions
Topic: Olympus LMPLFLN 5X Objective
Replies: 2
Views: 488

Re: Olympus LMPLFLN 5X Objective

Robert tested the normal mplanfln in this shootout https://www.closeuphotography.com/5x-lens-test It was an underperformer on aps-c but not really terrible*. It's hard to imagine the longer working distance versiom is much better or different, but who knows. *initially remembered it being worse, jus...
by Scarodactyl
Mon Feb 07, 2022 7:18 pm
Forum: Equipment Discussions
Topic: Canon T3 with AmScope 10x+ (microscope objective)
Replies: 7
Views: 812

Re: Canon T3 with AmScope 10x+ (microscope objective)

Biological microscope objectives are designed with compensations built in assuming a 0.17mm glass cover slip above the subject. That isn't really a problem at lower magnifications but when you go to higher mags and resolutions it becomes quite important. The short working distance may also make side...
by Scarodactyl
Mon Feb 07, 2022 6:06 pm
Forum: Equipment Discussions
Topic: Canon T3 with AmScope 10x+ (microscope objective)
Replies: 7
Views: 812

Re: Canon T3 with AmScope 10x+ (microscope objective)

Is this an opaque subject? At these magnifications you'd need to use a no cover glass metallirgival objective. Coaxial illumination might also be called for to deal with the short working distance.