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recomend a dital usb microscope/camera for coins please
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<p>[QUOTE="desertgem, post: 2033115, member: 15199"]this is from the amazon page of PZ01. My comments in color below each of their points. Magnifying a blur 20 times gives a larger blur. There are physical limits and laws of light and optics, which do not change because of the word "digital"</p><p><br /></p><p><br /></p><p>Magnification: 0.1 ~ 200 times (combined optical and digital zoom)</p><p><span style="color: #b30000">The lens doesn't magnify much , so they use software to 'make' extra pixels and put them into the photo to make it look like it is magnifying the coin, but half or more of the pixels are not 'true', they are software rendered. So you might see things which really aren't there or may come and go from photo to photo~ a fake image. </span></p><p><br /></p><p>The magnification factor increase as the focal distance decrease, and vice versa. It could be used as a web camera if the focal distance is 0.3 m or more. <span style="color: #b30000">Because it is a limited ( probably lens of plastic)</span>, <span style="color: #b30000">you can't focus on a specific area and alter the magnification, as to get the high magnification, they count the size of the area magnified instead of the details </span></p><p><br /></p><p>0.3M pixel CMOS sensor, interpolated to 2MP definition. <span style="color: #b30000">This is a key point. they use a .3M pixel sensor. This is the actual working part of the camera and it is less than in modern $20 webcam, and they know this so they use the software to fake it up to 2MP ( figure it out, for each real pixel, they throw in about 6 fake software manufactured pixels. Checkout the pixel count of the cheap point and shoot cameras, much higher.</span></p><p><br /></p><p>Photo Capture Resolution: 640 X 480, 320 X 240. <span style="color: #b30000">Notice how many people use these on the forum, blowing a limit of 640 x480 ( with 5/6 fake pixels up to several times in size and then asks ....gee what is that which looks like the face of kim k. on my lincoln??? It is just imaginary fake crud!! .</span></p><p><br /></p><p><span style="color: #000000">I do hope that if you ever need to have an endoscope or otoscope used on you that it is not this one. They may find the face of Mt. Rushmore on your sigmoid.</span></p><p><br /></p><p><span style="color: #000000">A good scope will cost several hundred dollars , and I recommend a surplus laboratory dissecting scope such as B & L, Olympic, etc,. which come from college labs and can serve you for decades</span> with just dusting. The advantage of the stereo scopes is that the 2 eyepieces can be adjusted separately as to strength, so you can use glasses or not.</p><p><br /></p><p>Yes, I know digital chinese are cheap, but they are so for a reason. The Dino-Lite long focus scopes are OK, but well beyond the PZ01.[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 2033115, member: 15199"]this is from the amazon page of PZ01. My comments in color below each of their points. Magnifying a blur 20 times gives a larger blur. There are physical limits and laws of light and optics, which do not change because of the word "digital" Magnification: 0.1 ~ 200 times (combined optical and digital zoom) [COLOR=#b30000]The lens doesn't magnify much , so they use software to 'make' extra pixels and put them into the photo to make it look like it is magnifying the coin, but half or more of the pixels are not 'true', they are software rendered. So you might see things which really aren't there or may come and go from photo to photo~ a fake image. [/COLOR] The magnification factor increase as the focal distance decrease, and vice versa. It could be used as a web camera if the focal distance is 0.3 m or more. [COLOR=#b30000]Because it is a limited ( probably lens of plastic)[/COLOR], [COLOR=#b30000]you can't focus on a specific area and alter the magnification, as to get the high magnification, they count the size of the area magnified instead of the details [/COLOR] 0.3M pixel CMOS sensor, interpolated to 2MP definition. [COLOR=#b30000]This is a key point. they use a .3M pixel sensor. This is the actual working part of the camera and it is less than in modern $20 webcam, and they know this so they use the software to fake it up to 2MP ( figure it out, for each real pixel, they throw in about 6 fake software manufactured pixels. Checkout the pixel count of the cheap point and shoot cameras, much higher.[/COLOR] Photo Capture Resolution: 640 X 480, 320 X 240. [COLOR=#b30000]Notice how many people use these on the forum, blowing a limit of 640 x480 ( with 5/6 fake pixels up to several times in size and then asks ....gee what is that which looks like the face of kim k. on my lincoln??? It is just imaginary fake crud!! .[/COLOR] [COLOR=#000000]I do hope that if you ever need to have an endoscope or otoscope used on you that it is not this one. They may find the face of Mt. Rushmore on your sigmoid.[/COLOR] [COLOR=#000000]A good scope will cost several hundred dollars , and I recommend a surplus laboratory dissecting scope such as B & L, Olympic, etc,. which come from college labs and can serve you for decades[/COLOR] with just dusting. The advantage of the stereo scopes is that the 2 eyepieces can be adjusted separately as to strength, so you can use glasses or not. Yes, I know digital chinese are cheap, but they are so for a reason. The Dino-Lite long focus scopes are OK, but well beyond the PZ01.[/QUOTE]
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recomend a dital usb microscope/camera for coins please
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