Sakar 8 X 21 Binaculars $6.99 + Tax at Circuit City

[techtechtech]

Link

 

[yomamma]

Link fixed.

Bill

 

[Mizer]

Repaired Link

I have three of these sitting at home. I may give them as gifts but I am not sure of the quality.

 

[allisolm]

Good product, good price but THREE links that don't work! :Q Someone always says that you have to remove the session ID information, but I don't know exactly which characters that involves so I'm not going to attempt a fourth link.

 

[yhelothar]

sorry to crap your thread but i wouldn't even waste my time with this...
probably has plastic uncoated lenses, low contrast and fuzzy. I had a cheap 8x21 binocular before, it was more clear not using binoculars at all.

 

[SKORPI0]

SAK 82170

 

[yhelothar]

hmmm doesn't look that bad... guess it's ok if you need something compact.
the marketing that they used in the specs is 100% gimmick
> Military Style Lens - does that show anything about the quality?
>> Protection from Ultra-Violet Rays and Sun Radiation - all binoculars have 100% UV protection
>>> High Quality Optics - please define "High Quality"

 

[Analog]

21mm = very poor eye relief. Therefore, if you have glasses, you might as well look through coke bottles.

 

[Acura3]

Got one. It is just ok, not great. I'm just gonna leave it in my car.
For another $10 more I've got Bushnell 10x50 in Kmart sale last year.

 

[Mike7]

Originally posted by: yellowfiero
21mm = very poor eye relief.

The "21mm" denotes the diameter of the objective lens; this measurement has no direct bearing on eye relief.

Or am I misunderstanding your criticism? Did you somehow determine that 21mm is also, coincidentally, the eye relief for these binoculars?

 

[Mike7]

> Military Style Lens - does that show anything about the quality?
>> Protection from Ultra-Violet Rays and Sun Radiation - all binoculars have 100% UV protection
>>> High Quality Optics - please define "High Quality"

The marketing department forgot to mention that the binoculars are Y2k Compliant.

 

[Davemeister]

Originally posted by: Mike7

> Military Style Lens - does that show anything about the quality?
>> Protection from Ultra-Violet Rays and Sun Radiation - all binoculars have 100% UV protection
>>> High Quality Optics - please define "High Quality"

The marketing department forgot to mention that the binoculars are Y2k Compliant.

maybe they're cheap because they're not Y2K compliant... if the date rolls over you'll go blind!

 

[yhelothar]

21mm is very good eye relief, and is very rare.
btw, i wouldn't count on bushnell delivering *decent quality optics either...

 

[zippin44]

21 mm is the objective lens diameter, not the eye relief. A good comparison of binocs is to divide the objective diameter by the eye piece diameter to get the image size. That's 21/8 = 2.6 Your pupil has a maximum diameter of about 7.5 mm, beyond that, the cone of focused light falls outside the enlarged pupil, and is wasted image. Anything smaller is not utilising the full capacity of the eye. Generally, if you want a better image you gotta get a bigger objective lens. Here's why. Binocs (and telescopes) collect light to produce an image. The bigger the objective lens, the more light it collects and the better the image. That's why the "power" of a telecope is pretty much meaningless, as far as image quality is concerned. If the scope has a puny objective lens/mirror, is will produce a dim image, and a dim image magnified 200x is still a dim, almost impossible to see image.

As far as these binocs are concerned, I use a similar, cheap pair of Tasco 8x21 for scouting when flyfishing and kayaking. I just keep them in the truck. If I end up dumping the kayak and the binocs go for a swim, who cares! If the heat toasts the lens, big deal, they're only $9. Best of all, when I travel to poor countries, they make great gifts for the local guides and childeren that you meet everywhere. In fact, I'm getting a pair of these for my my five year old nephew. He'll love 'em, and when he looses them in a few weeks, I'm not going to loose any sleep over it.

 

[foggy]

Originally posted by: zippin44
21 mm is the objective lens diameter, not the eye relief. A good comparison of binocs is to divide the objective diameter by the eye piece diameter to get the image size. That's 21/8 = 2.6 Your pupil has a maximum diameter of about 7.5 mm, beyond that, the cone of focused light falls outside the enlarged pupil, and is wasted image. Anything smaller is not utilising the full capacity of the eye. Generally, if you want a better image you gotta get a bigger objective lens. Here's why. Binocs (and telescopes) collect light to produce an image. The bigger the objective lens, the more light it collects and the better the image. That's why the "power" of a telecope is pretty much meaningless, as far as image quality is concerned. If the scope has a puny objective lens/mirror, is will produce a dim image, and a dim image magnified 200x is still a dim, almost impossible to see image.

As far as these binocs are concerned, I use a similar, cheap pair of Tasco 8x21 for scouting when flyfishing and kayaking. I just keep them in the truck. If I end up dumping the kayak and the binocs go for a swim, who cares! If the heat toasts the lens, big deal, they're only $9. Best of all, when I travel to poor countries, they make great gifts for the local guides and childeren that you meet everywhere. In fact, I'm getting a pair of these for my my five year old nephew. He'll love 'em, and when he looses them in a few weeks, I'm not going to loose any sleep over it.

Fascinating. So you're saying that if a binoc is "8x21", the 8 refers to the zoom factor, the 21 refers to the objective diameter. Therefore, dividing 21/8 = 2.6 means 2.6mm image? I take it thus the larger this value is, the better the image quality? (in general)

Care to educate the rest of us also what eye relief is?

Thanks and bottom line - is this a decent purchase or not?

 

[Analog]

Originally posted by: foggy

Originally posted by: zippin44
21 mm is the objective lens diameter, not the eye relief. A good comparison of binocs is to divide the objective diameter by the eye piece diameter to get the image size. That's 21/8 = 2.6 Your pupil has a maximum diameter of about 7.5 mm, beyond that, the cone of focused light falls outside the enlarged pupil, and is wasted image. Anything smaller is not utilising the full capacity of the eye. Generally, if you want a better image you gotta get a bigger objective lens. Here's why. Binocs (and telescopes) collect light to produce an image. The bigger the objective lens, the more light it collects and the better the image. That's why the "power" of a telecope is pretty much meaningless, as far as image quality is concerned. If the scope has a puny objective lens/mirror, is will produce a dim image, and a dim image magnified 200x is still a dim, almost impossible to see image.

As far as these binocs are concerned, I use a similar, cheap pair of Tasco 8x21 for scouting when flyfishing and kayaking. I just keep them in the truck. If I end up dumping the kayak and the binocs go for a swim, who cares! If the heat toasts the lens, big deal, they're only $9. Best of all, when I travel to poor countries, they make great gifts for the local guides and childeren that you meet everywhere. In fact, I'm getting a pair of these for my my five year old nephew. He'll love 'em, and when he looses them in a few weeks, I'm not going to loose any sleep over it.

Fascinating. So you're saying that if a binoc is "8x21", the 8 refers to the zoom factor, the 21 refers to the objective diameter. Therefore, dividing 21/8 = 2.6 means 2.6mm image? I take it thus the larger this value is, the better the image quality? (in general)

Care to educate the rest of us also what eye relief is?

Thanks and bottom line - is this a decent purchase or not?

If I remember right, eye relief is the distance between your eye and the eye-piece of the binoc or scope that will produce an image. Therefore, if you have glasses, you need a bigger eye relief number, otherwise you'll have to take your glasses off to get your eye closer to the eye-piece (not good if you can't use your glasses!). Generally cheap optics give you small eye relief, meaning you have to jam your eye just about on the eyepiece to even see the image. Better optics let you back off and still see.

 

[yhelothar]

Quote

--------------------------------------------------------------------------------
Originally posted by: zippin44
21 mm is the objective lens diameter, not the eye relief. A good comparison of binocs is to divide the objective diameter by the eye piece diameter to get the image size. That's 21/8 = 2.6 Your pupil has a maximum diameter of about 7.5 mm, beyond that, the cone of focused light falls outside the enlarged pupil, and is wasted image. Anything smaller is not utilising the full capacity of the eye. Generally, if you want a better image you gotta get a bigger objective lens. Here's why. Binocs (and telescopes) collect light to produce an image. The bigger the objective lens, the more light it collects and the better the image. That's why the "power" of a telecope is pretty much meaningless, as far as image quality is concerned. If the scope has a puny objective lens/mirror, is will produce a dim image, and a dim image magnified 200x is still a dim, almost impossible to see image.

As far as these binocs are concerned, I use a similar, cheap pair of Tasco 8x21 for scouting when flyfishing and kayaking. I just keep them in the truck. If I end up dumping the kayak and the binocs go for a swim, who cares! If the heat toasts the lens, big deal, they're only $9. Best of all, when I travel to poor countries, they make great gifts for the local guides and childeren that you meet everywhere. In fact, I'm getting a pair of these for my my five year old nephew. He'll love 'em, and when he looses them in a few weeks, I'm not going to loose any sleep over it.
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Fascinating. So you're saying that if a binoc is "8x21", the 8 refers to the zoom factor, the 21 refers to the objective diameter. Therefore, dividing 21/8 = 2.6 means 2.6mm image? I take it thus the larger this value is, the better the image quality? (in general)

Care to educate the rest of us also what eye relief is?

Thanks and bottom line - is this a decent purchase or not?

i wouldn't think about giving it to kids, they'd just prolly get bored with it after a while and lose interest with these cheap binos,
if you got them good ones, or at least decent ones, they would more likely be interested in them

btw 2.6mm for eyerelief is the distance from the eye to the lens
so 2.6mm, your eyeballs need to almost be touching the lens in order to see the entire field of view(which is small enough as it is)

 

[chrisjor]

well, I am a real simple kind of guy, I got a pair of these free after rebate at CC a couple months ago and think they are great for going to the theater.....saw Contact using them...chicks were hot. Well worth $0.00!!!