Microscope Choices
- This topic has 13 replies, 5 voices, and was last updated 10/20/2017 at 12:55 pm by
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Not to beat a dead horse, but I am going to buy a low cost (~$50) handheld USB scope to inspect my kitchen knife sharpening progress and try a few things (like more accurate edge straightening techniques via steeling). I have read/seen a lot of everyone’s posts/vids here and still feel like the info is all over the map. There are many options out there yet a lot of them seem to be licensed repackaging of the same stuff. Most of specs and reviews seem to be on the misleading side of things (with MP, resolution and theoretical mag). I know you get what you pay for but is the Dino-lite really worth 2-3x the price and why ? Are the optics and chip really better ? They all probably use the same ones.
I just ordered the new 1500 diamond stones plus the 9/5/3 Alum Oxide films and want to see the effects. I am also fascinated with the post process image layering capabilities of Adobe, etc. I have also seen a demo of #2 below plugged into a smartphone which would be the ultimate in portablility.
I have narrowed my choices to:
- Carson Optical MM-840 2MP (75x-300x) at $37.61
- Plugable 2MP (10x-250x mag) at $34.95 – which looks physically very, very similar to #1 (except for the color)
- Celestron 44302 2MP (10x-150x) at $37.99
- Celestron 5MP (20x-200x) at $80 – you would think the more MP the better but the reviews are unclear
Recommendations and comments would be appreciated.
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I have the 5MP Celestron and like it for handheld inspection of the edge between grits. The number of pixels isn’t all that important unless you want to print the photos or zoom in digitally. Most PC monitors are set at 1280 X 968, which is 1.3MP. 5MP is just double the pixels of the 1.3MP, so there really isn’t that much to gain (double horizontally and double vertically). I’ve almost never used the 5MP res. If you have a relatively new wide screen monitor, you might be able to display at a higher res, but I don’t think you need it. I also use the higher magnification very seldom. My Celestron focuses at the rim of the shroud at 50X and again at 155X, using a 21″ monitor. The higher magnification is too annoying to keep in focus as the depth of field is too shallow.
Hope this helps you…
Most of specs and reviews seem to be on the misleading side of things (with MP, resolution and theoretical mag).
I agree, most of the USB scopes are virtually equal. The only reason why I like Dino-lite is the proprietary software it comes with (DinoCapture 2.0). The software allows you to measure with the USB camera scope very accurately. The cheaper scopes are just a scope and basic imaging software. How would someone use the software for sharpening knives? See the images below of measured and documented edge impressions. WARNING; This isn’t for everyone but is the reason the Dino-lite is so expensive and unique (Proprietary). The optics are also pretty good but I would say not any better than other similar scopes (Overall). One could get away with the cheapest Dino-lite scope and get the great software and measurement tools (See One here).
Note; Because any USB scope only has one objective lens, it is physically/optically limited by it. This is the reason why Dino-lite has many different scopes with many different, magnifications, lighting options, and consequently, may different price points. Basically, each scope is application and need based. The scope referenced above for $100.o0 (US) is adequate for “most” of our needs. I hope this is helpful!
Eddie Kinlen
M1rror Edge Sharpening Service, LLC
+1(682)777-1622Is the Celestron truly 5MP ? I get mixed answers about whether the pics would be twice the resolution on appropriate monitors. I think the post process image layering would benefit from more MP. Yet the specs from Celestron (attached) indicate a 1600 x 1200 pixel array which is 2MP.
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I have used my new Carson and find it a great deal at $37. Software is basic but works fine. Focus knob is full circle and smooth. Pic taking with capacitive button or software. Goose neck holder allows for pretty repeatable viewing between sharpening strokes. It also displays nicely on my laptop and phone. Pics are as clear as I need to see scratch patterns and they stack up nicely for edge views. Attached are some pics of the scope, hi/low mag on PC and phone. Like all these scopes actual mag is function of your display also. These were saved on my laptop (then resized from 100 to 25 in paint to reduce filesize). Best I can tell was that on my laptop screen size the lo mag was ~35x and the hi mag ~150x (~4 times the difference —- which is what the 75 to 300 scope spec says). With a bigger/better monitor I think I would get closer to the spec. However, what I got was more than enough for scratch pattern patrolling. I will save the home built electron microscope for another time LOL.
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Stacked image compilation (using freeware) 5 images plus Stacked in this post plus the next one
The only reason why I like Dino-lite is the proprietary software it comes with (DinoCapture 2.0). The software allows you to measure with the USB camera scope very accurately. ……… The scope referenced above for $100.o0 (US) is adequate for “most” of our needs.
Unfortunately $100 model (AM2111) has measurement toolbar disabled in DinoCapture 2.0. Dino-Lite Basic model AM2111 is crippled. The measurement features are available only in models costing $250 and up. Here is compatibility chart from here
The good news is that Celestron 5MP comes with software that allows to draw angles and shows angle value.
Anybody experience with the Dino Lite software?
Dino-Lite software DinoCapture 2.0 also available for free download on website, but it works only with Dino-Lite scopes.
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