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$25.00 objective
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Jan 22, 2020 21:59:30   #
Johann Schutte Loc: NZ
 
Trial of the Amscope finite 4x objective. Certainly not as sharp as my Nikon 10x and more CA to deal with, but amazing what you can get for $25.00. 7:1 macro. 180 images @ 10 micron, stacked with Zerene. Canon 6d & Amscope 4x mounted on a Raynox 2.2. ISO 800. 4x flash (tr/bl), 1/160. One of the problems I have had is high ISO, given the diffusion material I use, which at this time is office paper and EPE foam. Any recommendations as to material that's more transparent, but offers good spread and diffusion?


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Jan 22, 2020 22:08:15   #
CHG_CANON Loc: the Windy City
 
Love the details and colors!

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Jan 22, 2020 22:24:34   #
photosbytw Loc: Blue Ridge Mountains
 
Hey, I got a 10x something from china for $9 or so........it has all kinds of problems but it's fun to play with............once I receive my check for my Powerball winnings, I'm getting a Mitutoya 10x.....

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Jan 22, 2020 23:35:54   #
kpmac Loc: Ragley, La
 
Really nice.

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Jan 23, 2020 00:01:13   #
Mark Sturtevant Loc: Grand Blanc, MI
 
This is darn amazing!
There is diffusion and there is reflection -- which also then diffuses. For diffusion I strongly suggest that you try thin packing foam as diffuser material. This stuff is routinely encountered as the padding around electronic products -- for me a bit of 'dumpster diving' at work can generally turn up plenty. But you can also buy it online in rolls. Many choices, like this: https://www.amazon.com/Packing-Materials-Perforated-shipping-mailing/dp/B01HU8B43G/ref=sr_1_6?keywords=rolled+packing+foam&qid=1579755582&sr=8-6

I got a roll at an office supply store. You can shape it. Concave toward the subject is recommended. And you can layer it. I find thatthe center of the light area can still give blown out highlights when using a flash at fairly high power, but you can put in extra layers on the diffuser at the center to block that.

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Jan 23, 2020 00:29:41   #
Johann Schutte Loc: NZ
 
Thanks for the tip Mark. Very helpful. I've not tried it but certainly will. The problem is that the materials I use diffuse well, but block so much light that I have to increase ISO and/or flash power to get a decent exposure. Increased power of course eats into my rechargeables' load time and most frustratingly, they sometimes (insert expletive of choice) fail just before the stack is completed. In addition higher ISO always implies greater potential for noise. I also think that stronger flash power increases potential for blown out highlights, even when you maintain exposure by decreasing ISO. So I'm loathe really to go more than 1/4 flash power. In a naturally dark subject like this one, the problem is a big one!. Thanks for your tip. I will try three layers and space them. Cheers mate. Johann, NZ.

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Jan 23, 2020 07:33:31   #
dpullum Loc: Tampa Florida
 
Complete systems
https://www.ebay.co.uk/itm/AmScope-Nikon-SLR-DSLR-Camera-Adapter-for-Microscopes-2X-Magnification-Power-/190814167210

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Jan 23, 2020 10:20:07   #
raymondh Loc: Walker, MI
 

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Jan 23, 2020 11:18:41   #
sippyjug104 Loc: Missouri
 
Fantastic image with amazing detail. I have that exact same microscope objective along with the AmScope 10X Plan finite objective and, in my opinion, are excellent quality for the price.

My most often used means of diffusion when using the microscope objectives as the camera lens are ping-pong balls and plastic translucent drink cups stacked together with a white paper towel between them. I cut a hole in the bottom of the cups and slide them over the objective in a "lens hood" fashion. I cut a section out of the length of the cups so that the camera can move over the subject as the shots advance forward.

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Jan 23, 2020 11:32:55   #
Johann Schutte Loc: NZ
 
sippyjug104 wrote:
Fantastic image with amazing detail. I have that exact same microscope objective along with the AmScope 10X Plan finite objective and, in my opinion, are excellent quality for the price.
Is it this one Sippy?
PS. Sorry. Wrong pic. That's the 2x. Anyone know if this is good?



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Jan 23, 2020 11:41:10   #
photosbytw Loc: Blue Ridge Mountains
 
Mark Sturtevant wrote:
This is darn amazing!
There is diffusion and there is reflection -- which also then diffuses. For diffusion I strongly suggest that you try thin packing foam as diffuser material. This stuff is routinely encountered as the padding around electronic products -- for me a bit of 'dumpster diving' at work can generally turn up plenty. But you can also buy it online in rolls. Many choices, like this: https://www.amazon.com/Packing-Materials-Perforated-shipping-mailing/dp/B01HU8B43G/ref=sr_1_6?keywords=rolled+packing+foam&qid=1579755582&sr=8-6

I got a roll at an office supply store. You can shape it. Concave toward the subject is recommended. And you can layer it. I find thatthe center of the light area can still give blown out highlights when using a flash at fairly high power, but you can put in extra layers on the diffuser at the center to block that.
This is darn amazing! br There is diffusion and t... (show quote)



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Jan 23, 2020 12:40:49   #
sippyjug104 Loc: Missouri
 
Johann Schutte wrote:
Is it this one Sippy?

PS. Sorry. Wrong pic. That's the 2x. Anyone know if this is good?


https://www.amscope.com/accessories/objective/plan/4x-plan-achromatic-compound-microscope-objective-lens-1.html

https://www.amscope.com/accessories/objective/plan/10x-plan-achromatic-compound-microscope-objective-lens.html

These are the two AmScope Plan Achromatic "Finite" microscope objectives that I brought ($22 and $36) and I find them to be quite excellent. I've bought some Chinese "no brand" and I was quite disappointed with their performance although they were inexpensive so live-an-learn.

These are 160mm focal length finite objectives (end of objective to camera sensor plain) so they will require some method of extension like tubes, bellows, helicoid or whatever.

However whatever is used as the extension SHOULD be internally flocked for the slightest internal reflection will greatly impact the quality of the image.

I have the 4X and 10X in the Plan INFINITY application also and of course they must be attached to a 200mm lens (different length mm produces different levels of magnification than listed on the objective) in order to focus properly on the camera sensor. I use a combination of extension tubes and a Raynox DCR-150 (208mm magnifying lens) as the tube lens with these.

I highly recommend AmScope and I have brought several items from them at great prices, great quality and great response and service.

On my wish-list is a Nikon Tool Maker (TM) objective in the 5X and 10X for they are designed for industrial precision work with providing long working distances and telecentric design and APO glass. Oh My..!

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Jan 23, 2020 12:52:03   #
Johann Schutte Loc: NZ
 
photosbytw wrote:


Thanks for the info Sippy. Please tell me what you use/how you flock the tube. Or if you have one, a refrence that describes the process. Much appreciated. Johann.

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Jan 23, 2020 13:01:27   #
Johann Schutte Loc: NZ
 
For those interested. This is on the other end of the $ spectrum, running, as I have it at around 16k (US). Each is manufactured on order, with a lead time of several weeks.



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Jan 23, 2020 13:03:11   #
newtoyou Loc: Eastport
 
Some suggestions. First I have done.
Just wipe down a piece of perspex with ethyl acetate. Do this OUTSIDE.
SECOND.fume a piece of glass with super glue. Again OUTSIDE.
Read up on the process under fuming for finger print recovery.
Many cheap plastic light filters seem to fit the bill.
Lastly, closed cell foam can be layered till required translucency and light are achieved. Then tape on.

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