help with Bronica please

[mertonia]

Hello
I have been away from the forum for a while so excuse me just to pop by and ask a question.

I have noticed that my eyesight has begun to deteriorate which in turn is impacting on the sharpness of my images. I guess i need to adjust the dioptric thingy but i am not sure how. BTW the camera is a GS1

thankyou for any suggestions.

peter

[zx9]

Hi Peter.
With the WLF you need to unscrew the bezel around the 'dioptre' and replace with one of the correct strength.
IIRC If you are using a prism the 'dioptre' fits over the original eyepiece in the same way an eyecup would be attached though I am a bit hazy on the prism, it's been a long time since I handled one.
Hope that helps.

[mertonia]

Keith

i thought i had replied to your post but not sure where it went!

thanks for your advice, but i have a stupid question...

how do i know what strength to purchase?

peter

[Malcolm_Stewart]

I know nothing about Bronicas, but in the 35mm SLR arena different manufacturers used different ways of defining the dioptre strength. Some labelled the dioptre correction lenses with the figure which your optician could advise from your most recent spectacle prescription; others took in to account that the viewfinder image was normally set at about 1-2m away.

The most helpful had a set of correction lenses on a slide which could quickly tell you what was best for your eyes at that time - but where will you find that quality and depth of service these days?

Nowadays, most DSLRs I've used have a built-in and adjustable correction feature.

[Rhys]

how do i know what strength to purchase?

peter

Maybe go into Superdrug etc. and try on some reading glasses until you find some that are just right then see what dioptre they are. That should give you an idea I hope.

[mertonia]

thanks for your help with this

much appreciated

peter

[Wheelu]

I have the same problem so did a Net search to see what is out there: -

"Are you CERTAIN that you need this strength? the reason I ask is that person with NORMAL vision has a standard eyepiece strength which has a diopter value of -1.5 dipters, so corrections to that are NOT the same as buying a vision correction lens in the drugstore for reading!

Eyepieces for the ETRS prism finder were -4.5, -3.5, -2.5, -0.5, +0.5 and +1.5, so you would buy a +0.5 only if your vision required that a +2.0 diopter correct were need (-1.5 standard + 2.0 correction = 0.5 eyepiece)"

The poster was called Wilt and the forum PhotoKB, 15-1-2006