Paul, at one point there was a discussion about planning a review of all amplified view finder out there, I am most enthusiastic about this and more than willing to supply the panel of reviewer with the appropriate equipment, but things would have to be standardized , all housing / view finder ought to be for the same camera, better yet one camera in cropped sensor and one full frame, same lens /port size across the board, test done on same day (eliminates hangover and bad hair days in the course of multiple days) in smae condition by a panel of reviewer selected for their non affiliation to any dealers and obliviously no manufacturer representatives on the review panel and no involvement from the manufacturer beyond supplying the equipment for the test.
Test to be done in a pool with a suitable grid, points given on:
- Ease of removing Standard viewfinder and replacing with enlarged version.
- Field of view on both cropped and full frame cameras (edges performances)
- Line of sight comfort (how far off to the side are you before losing the image).
- Eye relief (distance of eye from finder)
- Weight & size
- Diopter adjustment (Y or N)
- Retail price of unit
- Overall impression and quality versus price.
Again this is bound to be suggestive at some point, human are human, one might be used to one brand and feel more comfortable with it, but having let say 4 or more individuals is likely to stabilize this factor somewhat.
If the other manufacturer are up to it, or if any dealer want to supply the equipment in questions (then obliviously proper thanks for the loan of the equipment would be credited to them in the review) as well as retain the right to post the results on their web site, as for us, we were up to it then and still are now.