What is the focal length of the magnifier - how close do you have to be to your work?
1951961
There are three lenses which can be stacked for greater magnification. Using the first lens only it's about 8-8.5 inches. Add the second lens and that drops to about 4 - 4.5 inches. Add the circular lens (for the right eye only) and it drops to about 3/4 - 1 inch. Hope this helps.
1951962
With the lowest magnification you are about 8 to 10 inches. As you move up in magnification you have to get closer.
1951963
With the lightest magnification I would say 10-12 inches. Using stronger magnification you have to be right on top of it.
1951964
In our line of work we are working on small die parts at close range. Roughly six inches away from the actual lens. Closer for the smaller lens. Roughly 2''... Everyone's eye muscles are different though.
1951965
Using low magnification the farthest is approx. 1 feet. With high magnifications the nearest is 2-3 inches
1951966
There are are three separate magnifiers in this device. Two (each covers both eyes) are in the visor. One is in a fixed position, and for greater magnification the other flips down. In addition, there is a small circular magnifying glass that flips down outside the visor. The following are the approximate focal lengths: (1) with fixed lense in visor: 12 inches from eye and 10 inches from end of visor; (2) with second big lense flipped down: 8 inches from eye and 6 from end of visor; (3) with the small circular lense flipped down: 5 inches from eye and 2 inches from the small circular lense. I hope this helps--Ken. There are are three separate magnifiers in this device. Two (each covers both eyes) are in the visor. One is in a fixed position, and for greater magnification the other flips down. In addition, there is a small circular magnifying glass that flips down outside the visor. The following are the approximate focal lengths: (1) with fixed lense in visor: 12 inches from eye and 10 inches from end of visor; (2) with second big lense flipped down: 8 inches from eye and 6 from end of visor; (3) with the small circular lense flipped down: 5 inches from eye and 2 inches from the small circular lense.... » Read More There are are three separate magnifiers in this device. Two (each covers both eyes) are in the visor. One is in a fixed position, and for greater magnification the other flips down. In addition, there is a small circular magnifying glass that flips down outside the visor. The following are the approximate focal lengths: (1) with fixed lense in visor: 12 inches from eye and 10 inches from end of visor; (2) with second big lense flipped down: 8 inches from eye and 6 from end of visor; (3) with the small circular lense flipped down: 5 inches from eye and 2 inches from the small circular lense. I hope this helps--Ken. « Show Less
1951967
No idea what the focal lenth of the magnifyer is...I do not have the box to find that info...But I love mine. I am sitting at the table without my glasses and doing beading with very tiny beads and able to see well with this on.
1121925
I cant tell you the distance as I returned mine. This info isn't included in the listing. The mount will place your magnifier 7mm below the centerline of your sight.(i.e. Eotech, etc). It is for the lower 2/3 of the view. There is another swing mount manufactured that has the same part number. The name of the manufacturer has slipped my mind as of right now, but it can be purchased from Primary Arms. Go to their web sight and read your descriptions. They also have the spring loaded push button and the magnifier flips to the side. That is what I bought instead. It is tighter and more stable as far as holding the magnifier. The Vortex has too much play and wobble for my taste. I cant tell you the distance as I returned mine. This info isn't included in the listing. The mount will place your magnifier 7mm below the centerline of your sight.(i.e. Eotech, etc). It is for the lower 2/3 of the view. There is another swing mount manufactured that has the same part number. The name of the manufacturer has slipped my mind as of right now, but it can be purchased from Primary Arms. Go to their web sight and read your descriptions. They also have the spring loaded push button and the magnifier flips to the side. That is what I bought instead. It is tighter and more stable... » Read More I cant tell you the distance as I returned mine. This info isn't included in the listing. The mount will place your magnifier 7mm below the centerline of your sight.(i.e. Eotech, etc). It is for the lower 2/3 of the view. There is another swing mount manufactured that has the same part number. The name of the manufacturer has slipped my mind as of right now, but it can be purchased from Primary Arms. Go to their web sight and read your descriptions. They also have the spring loaded push button and the magnifier flips to the side. That is what I bought instead. It is tighter and more stable as far as holding the magnifier. The Vortex has too much play and wobble for my taste. « Show Less
119631
I don't have mine in front of me, so I can't easily compare its brightness as a magnifier placed 8" above my work with a similarly placed 100W bulb, but I suspect the bulb is brighter. On the other hand, the magnifier has a quality optical view and the LEDs don't shine in your face or make life hot. I use it for surface mount soldering of 2mm-4mm sized parts and it's great. It won't replace a loupe, but they are inexpensive and easy to use - give one a try.
84637
Close focus is 25 feet, a little fuzzy at 20 ft. I use mine to spot bullet holes in a target when shooting with iron sights at 50 yards. Works great!
589186
Yes this headband magnifier will be in good focus at 18 to 24 inch range. I am happy with mine. I spread butterflies using mine. I have no focus problems at 24" or much closer. For the price this magnifier is as good or better than much more expensive one.
2144130
I couldn't find any documentation for the magnification, but I would hazard a guess at around 3x. It works well for me, I use it for paper craft.
621879
I assume you mean the bifocal area which is 1 inch diameter. The diameter of the magnifying area is stated in the item description.
621877
3 1/4 inches with an inset of a stronger magnifier of about 1 inch diameter
743733
Sorry it took me so long to respond. I left it at work! The diameter of larger part is approximately 4 inches. The smaller greater magnification part just under an inch. Still working great!
1675352
There is a Macro Mode option. How close you can get to your subject depends on the zoom setting. It ranges from 0.4 inches to 2.0 inches from the lens, according to the user manual.
1077786
At full, 42X zoom (1,000mm), the focus distance is about 8'. But I find that if I take the zoom down just a little to 39x (928mm), I can get significantly closer. Maybe 4 or 5 feet. This may give you better results at a distance. Also, at long zoom, it is harder for the autofocus system to focus. Bright light is required.
59286
I have not measured out any area to view with the scope, so I can not be certain. As the mount for this device is not particularly great I usually end up putting the plastic ring around what I intend to view & zoom in to focus. Is it possible to take 1 cm2 shots with it, likely yes though you will have to experiment with focal lengths to get the magnification & field of view that you want. This device is more of a toy than a piece of lab equipment mainly due to the iffy base & the magnification dial's placement. If something more lab grade that is what you are looking for I recommend a more typical microscope such as this one: http://www.amazon.com/iOptron-ST-80-Digital-Microscope/dp/B0032VFC84/ref=fs_patw_1 It has higher magnification, a backlight, & multiple objective lenses. I hope this was helpful.
443955
The magnifier is glass & is adjustable. the light it's self is 40" tall. The magnifier & the bendable arm is around 18".. In my estimation it would be better if it was longer if you're doing a big project.
1312202
Closest usable focus distance is about 5.5 inches from the lens. What that means in practice is that an item one-half of an inch across will fill about half the frame (at least on my 50D).
2219801
Each of the focal lengths for the 4 lenses are listed below: 1.5x Lens: 19.7 inches 2.0x Lens: 9.8 inches 2.5x Lens: 6.6 inches 3.0x Lens: 4.9 inches Please note that the focal length does not mean that you must hold the magnifier that far away from the object. It just means that's about the distance where the magnifier has its highest magnifying power.
454569
It depends on the limiting magnitude (i.e. the faintest objects you can see with the naked eye) where you plan to observe (see wikipedia.org and search for 'limiting magnitude' for more information). For reasonable conditions (lim. mag of 4-5) you'll need an extra ~8-9 mags, so a 10 inch or more should do it. If you plan to observe in 'perfect' conditions you might be able to get away with a smaller telescope, even down to 5 inches, but it would be pushing it. So, &gt;10" if you want to be on the safe side, &gt;5" if the conditions are very good.
64568
According to the specifications printed on the side of the box, the close focus for these binoculars is 26ft./8m. Hope this helps.