Reviews of 2-in-1 Spring-Arm Magnifier Desk Lamp - Large 7-1/2" X 6-1/4" Lens

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List Price: $199.99
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This is a great magnifying lamp with very little distortion! The focal range is long and wide due to the shape of the lens. I work on a bead loom with tiny beads and this lamp really helps with eye fatigue. I would highly recommend this lamp for anyone working with detailed items. The lamp head itself is just over 11" wide by 8 1/2" deep, so if your space is limited, this may not be the lamp for you. When not using the magnifier, this makes a great reading or work lamp. This lamp does not fold up flat and tall because the head is too big, but that is not a problem for me. This is a professional quality heavy duty magnifying lamp and I am very pleased with my purchase! Oh, I thought I might explain the word "Diopter" -

Diopter refers to the curvature of a lens. As the diopter increases, the lens becomes thicker and the curvature greater.

As the curvature increases, light rays are redirected to fill a greater portion of the viewer's retina, which makes the object look bigger.

So, the higher the diopter number, the closer you must hold the object to the magnifier because the lens is curved more and the further away from the lens, the more distortion you will get. The lower the diopter number, the lens is less curved and you can hold the object further away from the lens without distortion.

Diopter 3 would be great for reading a book or a letter or fine print etc.,

Diopter 5 you will have to hold that same print closer to the lens so that it does not become distorted, and

Diopter 8 you have a very small window of view without distortion, used mainly for very fine detail held up to the magnifier.

I wanted this magnifier to be about 11" away from my hands and the 5 Diopter with the wide lens appears to be just right for that purpose.

Focal length is the distance from the center of a lens to the point where the light rays converge and the object is in optimal focus (focal point).

This is also known as the "working distance" of the lens.

Focal length is important when the task requires using tools with the object being viewed.

Because focal length decreases as power increases, there is less room to perform work on an object under higher power lenses.

The field of view is the size of the magnified area under the lens that is in focus.

The field of view decreases as power increases.

More powerful lenses make small details look big, but less of the total object is visible.

There is a trade-off for the viewer who must decide between the size of the field of view and amount of magnification.

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My 95 year old Mother has severe macular degeneration and it lets her still crochet. I do have to put a couple of heavy books on the back to add more weight so it will not tip.

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The lamp could not even hold it's head up and in one place. It kept falling down to the desk top. If I didn't have a solution that would fit my needs I would have send it back. I don't think you should sell this lamp.

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The horizontal arm wasn't able to hold the magnifier off the desk more than a few inches. The vertical arm has a very limited range of motion--about 20 degrees. The light and the glass are pretty good for the price, I really wish the arms worked better.

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This piece of workmanship is a horrible purchase. It says a memory thing for holding it's position. I guess they forget to pack a memory chip in mine as it does not hold it's lens up. Secondly, there are no instructions. There is no way for me to figure out how to get this to work the way Amazon says it works. I wish I had not bought it.