short eye relief (1 Viewer)

R

RenChang Zhang

Member

• Jan 28, 2012

• #1

I am wearing glasses.
If I use a binocule with short eye relief, say only 12 or 13 mm, then what can I see?
Less sharp? Less bright? Or smaller area, small images I will see?
Or something else?
Thanks for your answers.

 

J

Jim M.

Member since 2007

Supporter

• Jan 28, 2012

• #2

Smaller area.

http://www.birdwatching.com/optics/education/eye_relief.html

Jim

 

P

pshute

Well-known member

• Jan 28, 2012

• #3

J. Moore said:

Smaller area.

Click to expand...

It's also hard to tell for sure whether you're looking through the centre of the image. That means you might not be seeing the sharpest possible image, and it's hard to set the separation of the barrels correctly too.

I've tried it and I don't like it. Avoid it if you can.

 

R

RenChang Zhang

Member

• Jan 28, 2012

• #4

Thank you Sirs.
I understand.

 

bh46118

Well-known member

• Jan 28, 2012

• #5

RenChang

You might find this to be of interest.

http://www.birdforum.net/showthread.php?t=220415&page=3