Originally posted by Penceler I figure if anyone can answer this it will be the folks on this forum. So why are viewfinders on modern dslr's so small? I recently dusted the cobwebs off my old OM-1 and was reintroduced to what a truly great viewfinder looks like. If you do the math, the K5's "excellent" viewfinder is about 40% the apparent size of the old OM. Even full frame dslrs are lucky to get up to 60%. So I gotta ask - why?
I realize AF lenses are the norm. Producing viewfinders with 92% magnification isn't easy (or cheap). But really? 40-60% the size?
Any thoughts on this trend?
John
To make things simple, it's because the sensor in the K-5 and most other DSLRs is considerably smaller than film, which leads to a smaller mirror, focusing screen, and viewfinder. You would have to magnify the image to match the apparent size of a film VF.
Full-frame DSLRs do have considerably larger viewfinders, though they're typically still not quite as big as in the film days. However, almost all pro cameras offer 100% coverage these days, something that was rare in the film era.
Adam
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