Search found 762 matches

by Scarodactyl
Thu May 14, 2020 10:00 pm
Forum: Beginner's corner
Topic: Compatibility between PH objectives and condenser
Replies: 5
Views: 196

Re: Compatibility between PH objectives and condenser

They are all olympus components, but from different series (bh2 finite to bx infinity). Question is if they messed with phase rings in that shift.
by Scarodactyl
Wed May 13, 2020 6:47 pm
Forum: Beginner's corner
Topic: Imaging help using a Canon dslr
Replies: 20
Views: 634

Re: Imaging help using a Canon dslr

It can definitely be done if you don't mind losing parfocality.
For a lower-cost stereo though this is a very reasonable approach, and I think your photos are turning out plenty good with it.
by Scarodactyl
Wed May 13, 2020 5:06 pm
Forum: Beginner's corner
Topic: Imaging help using a Canon dslr
Replies: 20
Views: 634

Re: Imaging help using a Canon dslr

A lensless adapter will not work well, it will be way out of parfocality with the eyepieces. Amscope would happily sell you a standard ndpl-1 or ndpl-2 dslr adapter, which may or may not work well on this scope. The -2 seems to be better, so make sure you get that one if you get one. You could also ...
by Scarodactyl
Wed May 13, 2020 5:01 pm
Forum: Beginner's corner
Topic: Nikon stereoscope magnification calculaion
Replies: 6
Views: 164

Re: Nikon stereoscope magnification calculaion

In that case the 0.5x has already been applied on the knob, so you just need to multiply by ten. With a 1x objective the magnification goes from 0.75-7.5
by Scarodactyl
Tue May 12, 2020 10:40 pm
Forum: Beginner's corner
Topic: Nikon stereoscope magnification calculaion
Replies: 6
Views: 164

Re: Nikon stereoscope magnification calculaion

What is the range of magnifications visible on the dial?
Nikon had the somewhat-unusual option to swap that out so the p.5x might already be applied.
by Scarodactyl
Tue May 12, 2020 6:33 pm
Forum: Beginner's corner
Topic: Nikon stereoscope magnification calculaion
Replies: 6
Views: 164

Re: Nikon stereoscope magnification calculaion

Typically 10 x 0.4 x 0.5 which is 2.
Except the dial shouldn't go down to 0.4 natively, so maybe you have one of the magnification marking rings installed to make the knob read mag correctly with the 0.5x objectove.
by Scarodactyl
Mon May 11, 2020 6:28 pm
Forum: For forum members who want to buy and sell equipment
Topic: Advice on physician microscope
Replies: 8
Views: 612

Re: Advice on physician microscope

If all you need is brightfield and simple pol you could save a lot of money buying used and probably have a more capable instrument at the end of the day. For instance on a Nikon labophot (160mm finite era) the attachments for simple pol (the one designed ie for differentiating gout and pseudogout) ...
by Scarodactyl
Mon May 11, 2020 12:51 am
Forum: Camera systems and imaging
Topic: 4/3 Camera Adapter for BX40
Replies: 2
Views: 278

Re: 4/3 Camera Adapter for BX40

I have one of these no-optics c mount adapters that came with some stuff I wanted. I would be happy to pass it on at my cost.
Modern olympus infinity objectives don't need any corrections so this should not introduce any abberations.
by Scarodactyl
Sun May 10, 2020 9:07 pm
Forum: For forum members who want to buy and sell equipment
Topic: Advice on physician microscope
Replies: 8
Views: 612

Re: Advice on physician microscope

What lighting methods do you need? It's possible an older system might give you everything you need at a much lower price point.
by Scarodactyl
Sun May 10, 2020 5:22 pm
Forum: Camera systems and imaging
Topic: Raspberry Pi High Quality Camera
Replies: 15
Views: 1131

Re: Raspberry Pi High Quality Camera

Does it make sense to put a regular correcting eyepiece in my trinocular tube, followed in short distance by a reducer lens, followed by the image sensor?? Yes. This is how their official solutions work for dslrs. I've never tried it with a sensor this small but it should probably work with a wide ...
by Scarodactyl
Sun May 10, 2020 6:16 am
Forum: Camera systems and imaging
Topic: Raspberry Pi High Quality Camera
Replies: 15
Views: 1131

Re: Raspberry Pi High Quality Camera

Given the size of this camera (it's pretty damn small), might it be the best option to position it at the intermediate image plane? Depending on the system the intermediate image can be quite large, oftrn enough to cover aps-c. Much better to use reducing optics I would think. Some systems dont hav...
by Scarodactyl
Fri May 08, 2020 7:28 pm
Forum: Beginner's corner
Topic: Stereo microscope magnification comparison?
Replies: 21
Views: 936

Re: Stereo microscope magnification comparison?

The AO 470 is a phenomenal scope, easily professional grade. The only downside is that auxiliary objectives are a bit harder to find now. I'll admit I rather like continuous zoom even if it isn't the most important part of my workflow. There's a reason that it totally took over as a feature, even if...
by Scarodactyl
Fri May 08, 2020 7:04 pm
Forum: Beginner's corner
Topic: Stereo microscope magnification comparison?
Replies: 21
Views: 936

Re: Stereo microscope magnification comparison?

One other offer if you're interested--I have a nikon smz1b on an illuminated stand that you can have for 160 including shipping. It is recently serviced and in great shape--that's less than I have into it but I am trying to downsize. I've been trying to sell it on eBay but there's no way I'll get my...
by Scarodactyl
Fri May 08, 2020 8:17 am
Forum: Camera systems and imaging
Topic: Question about eyepiece camera thru camera port
Replies: 6
Views: 397

Re: Question about eyepiece camera thru camera port

Yeah, I should have said 'ideally' on the crop factor. Practically speaking it isn't always easy to accomplish.
by Scarodactyl
Fri May 08, 2020 5:10 am
Forum: Camera systems and imaging
Topic: Question about eyepiece camera thru camera port
Replies: 6
Views: 397

Re: Question about eyepiece camera thru camera port

The camera should be in focus at the same timr as the eyepieces and have a similar field of view (ideally a nice rectangular crop of the full image circle).
On some scopes you can get light to both the camera and the eyepieces, others it's either or.
by Scarodactyl
Fri May 08, 2020 4:57 am
Forum: Beginner's corner
Topic: Stereo microscope magnification comparison?
Replies: 21
Views: 936

Re: Stereo microscope magnification comparison?

It definitely varies (and for the record the one I offered retails for around 1k usd through Brunel, so it's one tier up--probably not bad for an intro piece)--some of the low cost fixed mag ones I looked at at the same time had an amazing image for the price but strained my eyes a bit to look throu...
by Scarodactyl
Fri May 08, 2020 3:19 am
Forum: Beginner's corner
Topic: Stereo microscope magnification comparison?
Replies: 21
Views: 936

Re: Stereo microscope magnification comparison?

Mark, My experience (based on owning and disassembling several) is that lower priced (under, say, $1000) Chinese zoom microscopes aren't particularly good. The zoom adds significantly to the mechanical and optical complexity. Making one to a low price means short cuts in design and manufacturing. Q...
by Scarodactyl
Thu May 07, 2020 8:16 pm
Forum: Microscopes and optics
Topic: Microscopes in the Movies
Replies: 6
Views: 493

Re: Microscopes in the Movies

Probably a big novelty case for his boring, tiny dna analyzer using a retro style.
by Scarodactyl
Thu May 07, 2020 4:48 pm
Forum: Beginner's corner
Topic: objective nomenclature
Replies: 17
Views: 876

Re: objective nomenclature

It would be theoretically possible too, to have a field completely corrected for all peripheral aberrations, except curvature of field. This is a very good point, and seen on some prized lenses and objectives, giving the sort of abberations that 'stack out'. I think the Lomo 3.7x is an example. Whi...
by Scarodactyl
Thu May 07, 2020 3:23 pm
Forum: Microscopes and optics
Topic: Microscopes in the Movies
Replies: 6
Views: 493

Re: Microscopes in the Movies

They blow up an AO compound in Blade (or maybe Blade II).
They had a couple in Hobbs and Shaw, inclusing either a vintage Olynpus SZ or a clone thereof, which seemed like a good authentic pick for a general science lab. Thr cheqp monocular compound less so.
by Scarodactyl
Thu May 07, 2020 6:37 am
Forum: Beginner's corner
Topic: Stereo microscope magnification comparison?
Replies: 21
Views: 936

Re: Stereo microscope magnification comparison?

Any idea of your budget? I have a quite decent used Chinese head I could part with for 100 bucks including US shipping, but the downside is it also needs a stand (standard 76mm. I bought it for the stabd it was on, hence it being orphaned) which would add to the total cost (eg here is a genuine Leic...
by Scarodactyl
Thu May 07, 2020 6:22 am
Forum: For forum members who want to buy and sell equipment
Topic: Getting a new microscope
Replies: 8
Views: 540

Re: Getting a new microscope

You can sometimes get one used from a reputable dealer in refurbished scopes for a pretty decent price, which will probably be even safer than buying new from a company like Amscope. But no worries, you'll likely enjoy your scope quite a bit regardless of your choice.
by Scarodactyl
Thu May 07, 2020 12:39 am
Forum: My microscope
Topic: I ordered a new microscope
Replies: 14
Views: 807

Re: I ordered a new microscope

I hope you get a lot of enjoyment from it!
by Scarodactyl
Wed May 06, 2020 6:55 pm
Forum: For forum members who want to buy and sell equipment
Topic: Getting a new microscope
Replies: 8
Views: 540

Re: Getting a new microscope

I dunno, I have a pretty convincing cup of tea leaves over here that are saying something about a Nikon Alphaphot.
by Scarodactyl
Wed May 06, 2020 5:40 pm
Forum: Beginner's corner
Topic: Camera or slides?
Replies: 2
Views: 276

Re: Camera or slides?

Just from a very broad perspective, you can make your own slides but you can't make your own camera.
by Scarodactyl
Tue May 05, 2020 9:51 pm
Forum: Beginner's corner
Topic: 60x 0.17 or 63x 0 objective
Replies: 8
Views: 492

Re: 60x 0.17 or 63x 0 objective

Yeah, 1000x is the typical rule of thumb, though it is of course not absolute.
by Scarodactyl
Tue May 05, 2020 9:47 pm
Forum: Illumination Techniques
Topic: Improving Top-Stage Lighting Using a Smaller Aperture on the Lamp
Replies: 22
Views: 1382

Re: Improving Top-Stage Lighting Using a Smaller Aperture on the Lamp

Just to have one more try at this, this is one of your photos from the first post with the levels all mixed up to make the artifacts more visible (as their direct visibility will vary a lot depending on your monitor's contrast): https://i.imgur.com/5kUOngn.png The camera really shouldn't be doing th...
by Scarodactyl
Tue May 05, 2020 9:43 pm
Forum: Microscopes and optics
Topic: Eyepiece Camera Limits Visual Field from Eyepieces
Replies: 7
Views: 439

Re: Eyepiece Camera Limits Visual Field from Eyepieces

Your camera has a small sensor, significantly smaller than the image circle produced by the objectives (or the objective+tube lens in an infinity system). If you look at your 10x eyepieces they will likely have a field number on them, 10x/18, 10x/20 etc. That field number is basically how large of a...
by Scarodactyl
Tue May 05, 2020 3:27 pm
Forum: Home-made microscope adaptations
Topic: Setting-up TL on the microscope
Replies: 7
Views: 535

Re: Setting-up TL on the microscope

If the objective has a known working distance ypu could focud it on something flat and then just mess with it until the camera focuses, right?
I wonder if it would be possible to make the eye tubes extra adjustable to make parfocality with any tube lens within range.