The magnification is the same as any 10 power bino, the light gathering ability is less due to the smaller objective lens. At first and last light you won’t be able to see as well as a 10X bino with a larger objective lens.
No go with 10 x 42
Field of view and light gathering will be much better. Look to the future my brother . Some day you will need these. And more. Look at getting better than 15x in the future.
You will..
I have the 8x28 Vortex Diamondback compact. They are very easy to handhold, and have long eye relief, like 19mm.
But.. It's light-gathering ability is basically the same as your eye. If you can't see in there, it can't see in there. So I only use them for leisure non-hunting activities.
28mm divided by 8 power = 3.5mm effective exit pupil. The human eye can go open to 5mm (when you're young, diminishes with age).
To help with last-light glassing, you want the largest effective exit pupil you can get (or afford to bring with you in weight).
So for example... if you had an 8 x 56mm... you'd have 56mm divided by 8 power = 7mm exit pupil! That's more light that your eye can even take in! Therefore this particular power / lense combo would provide the greatest help at allowing you to see for a little bit longer than your eyes will naturally allow.
But when you step up to 56's the weight goes up.
When hunting in thick, where I know I can't glass long distances at all anyway, I like the 8x42's. They're easier to rapidly acquire your target with the FOV, because the FOV is wider. So you see more of the landmarks in the FOV that you made sure to make note of before raising your glass to your eyes. And they are a noticeable bit easier to handhold when you're tired and fatigued or huffin' and puffin' along the trail, but think you saw something and want to pause for a second to confirm.
But if your destination is way more wide-open and desert rolling hills, you definitely want the 15x56's! They are bleepin' Awesome!
But.. It's light-gathering ability is basically the same as your eye. If you can't see in there, it can't see in there. So I only use them for leisure non-hunting activities.
28mm divided by 8 power = 3.5mm effective exit pupil. The human eye can go open to 5mm (when you're young, diminishes with age).
To help with last-light glassing, you want the largest effective exit pupil you can get (or afford to bring with you in weight).
So for example... if you had an 8 x 56mm... you'd have 56mm divided by 8 power = 7mm exit pupil! That's more light that your eye can even take in! Therefore this particular power / lense combo would provide the greatest help at allowing you to see for a little bit longer than your eyes will naturally allow.
But when you step up to 56's the weight goes up.
When hunting in thick, where I know I can't glass long distances at all anyway, I like the 8x42's. They're easier to rapidly acquire your target with the FOV, because the FOV is wider. So you see more of the landmarks in the FOV that you made sure to make note of before raising your glass to your eyes. And they are a noticeable bit easier to handhold when you're tired and fatigued or huffin' and puffin' along the trail, but think you saw something and want to pause for a second to confirm.
But if your destination is way more wide-open and desert rolling hills, you definitely want the 15x56's! They are bleepin' Awesome!
Unless you have very good quality glass, objective lense and eye piece.
High power is use less. It will be to fuzzy. Blurred.
Here is a nice read about telescope and why they don't like to use power. The better the quality of the objective lense and eye piece the better viewing of small objects.
Here it is
High power is use less. It will be to fuzzy. Blurred.
Here is a nice read about telescope and why they don't like to use power. The better the quality of the objective lense and eye piece the better viewing of small objects.
Here it is
Meade Instruments Corporation - How to Calculate Power
World's leading manufacturer of astronomical telescopes for the serious amateur astronomer. Products include astronomical telescopes and accessories, eyepieces, CCD imaging equipment, astronomical software, spotting scopes, binoculars, and microscopes. The Company's innovative and...
www.meade.com