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Would you buy a variable diopter eyepiece?


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ZoneV Silver Member Nikonian since 08th Jan 2005
Fri 05-Aug-11 09:46 PM | edited Sat 06-Aug-11 12:22 AM by ZoneV

Are you nearsighted or farsighted? Does your vision fluctuate from one day to the next? Just turn the dial! You can now manually focus your favorite Nikon SLR with unprecedented accuracy! Do you like having a diopter eyepiece on, but occasionally need to Hand the camera to someone else to shoot a picture? Just turn the adjustment ring back to the neautral position!

Ok, that's the end of my sales pitch...Now...

If a third party manufacturer started selling a variable range viewfinder eyepiece correction adapter for Nikon manual focus SLRs, with a continuously variable adjustment range of +2 to -2 diopters, would you purchase it?

Price: $100 US

Available in black or chrome color

Range: +2 to -2*

Construction: aluminum

Cameras compatible: Nikkormat/FM/F2/F3 type eyepiece

The eyepiece would protrude out approx. 1.5 cm from the viewfinder, therefore adding nose clearance. It would screw on. It would not impact film loading. You would adjust the viewfinder focus by turning a ring. It would also have threads for additional viewfinder accessories to be mounted on top of it, thereby expanding the range or correction available*).

Correction range when mounted on camera:

default: +2 to -2
*with a Nikon +3 D eyepiece screwed in: +6 to +2
*with a Nikon -3D eyepiece screwed in: 0 to -4

Highest levels of correction available with Nikon accessory eyepieces mounted:

+6 and -6

Eye relief would be a little tighter than without it, but since glasses wouldn't be needed, it would still be possible to see the frame corners with minor shifting of eye position relative to the viewfinder. Effective viewfinder magnification would decrease slightly.

of course, this is all hypothetical; no such product actually exists.

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