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Celestron 10-30x50 UpClose Zoom Porro Prism Binocular

Celestron 10-30x50 UpClose Zoom Porro Prism Binocular

(MPN: 71140)
Description: Celestron's UpClose porro prism binoculars give a wide viewing field for their given magnifications, and are priced economically so that you needn't worry about them too much. 10 to 30 times Zoom, 50mm Objective, Fully coated optics, Water .... Read More

User Reviews

4 Star Review(3 Reviews)

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Date Reviewed:  07/01/2006
  • yclei
  • from LA
  • Member Since:
    Apr 2005

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    Product Experience:
    3 Days
Strengths: Relatively inexpensive. Not too heavy. Tripod-adaptable. 10-30x zoom.
Weaknesses: Not water proof. Not fog proof. Although advertised as "fully-coated," the coating on the lens is minimum.
Summary: At the shipped price of $32 as of July 2006, this binocular is of excellent value for me.

I bought this binocular for general sight viewing, and it does the job very well. The zoom is easy to adjust when you hold the binocular viewing something. At 10x, the image is bright and clear. At 30x, however, there is noticeable light loss (i.e., darker image). Also at 30x, it is not practical to view a fixed subject without a tripod for more than a few seconds, as the effects of hand shaking become severe. You will need a tripod adapter, which costs about $10 on eBay, to mount this binocular to a tripod.

The overall construction of this binocular is ok. Not perfect but well justified by the $32 cost. There is a thin layer of rubber around the barrels, and it does make holding the binocular more confortable.

Bottomline:

If you don't want to spend a fortune on a binocular but still want something for general/occasional uses, this one should do the trick. However, if you are onto something specific such as astronomy or bird watching, you may want to consider those with better optical construction and water/fog proof.

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Date Reviewed:  07/15/2006
  • solomonchak
  • Member Since:
    Jul 2006

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    Product Experience:
    1 Days
3 Star ReviewExcellent for the price.
Strengths: Relatively light; bright and wide field.
Weaknesses: Loose focuser, zoom lever not operation-friendly.
Summary: I bought this binocular for $32 and mainly use it for bird watching. At X10 the field is wide and I could find/follow a bird easily. It's quite light for a full size binocular, but not too light that it'll swing around when I hike.

The focuser has a very small movement range, and I can focus with only a slight turn. It might be bad for people who don't have good control on their fingers. The focuser is a bit loose, so when I pressed the binocular against my glasses I would change the focus. It wouldn't be a problem if you don't wear glasses.

I had to refocus after zooming, but not when I zoomed back out (which is expected). It's difficult to keep steady over X20, a tripod will be helpful. A point to note is when you adjust the diopter, do it when it's fully zoomed. I did it at X10, and one side got a bit out of focus when it's at X30.

The binocular is generally easy to use and it feels pretty good on my hand. I used to adjust the focus with my right hand, when doing that I can only adjust the zoom from X10 to ~X18 with my index finger. When I wanted to zoom further, I had to release my finger from the focuser. The problem is when I zoomed I needed to adjust the focus again. So I had to use my left hand for focusing and my right hand for zooming. It took me sometime to practice using it that way.

Overall, it's a very good deal for the quality and function. Your hands need to be flexible, but not your wallet!

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Date Reviewed:  09/14/2006
  • awilsonnc
  • Member Since:
    Jul 2006

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    Reviews
    Product Experience:
    1 Month
Strengths: Inexpensive, well constructed, nice balance, decent optics
Weaknesses: Not great at 30X, mechanisms could be smoother, case and strap chincy
Summary: At $32.00 this is a great price on binoculars that will used occasionally for sporting events. The zoom feature works well although the image falls off at the high end 30X. From 10X to about 25X the image looks great. Easy to focus and adjust. I don't see how you can beat this for the price.

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