110 film is to 35MM as M43rd is to FF?

Started Apr 12, 2013 | Discussions thread
Morris Sullivan
Senior MemberPosts: 6,009
Re: 110 film is to 35MM as M43rd is to FF?
In reply to FractalFlame, Apr 12, 2013

FractalFlame wrote:

Morris Sullivan wrote:

FractalFlame wrote:

35mm was 24 × 36 mm.

110 was 13 × 17 mm

That is NOT "exactly 1/2 the size" - it's about a quarter!

Half of each dimension = 1/4, not 1/2 over all.. it's a common misconception.

Technically true, but a bit pedantic.

If you want to call accuracy pedantry..

For example, if you type in a percentage on a photocopier it works in linear dimensions. I think if you asked the average person for a print half the size of an 8x10 you'd likely get a 4x5.

Possibly - but that still doens't make it correct.

If you asked me for 1/2 a 8x10 page, I'd give you a 4x10 or 8x5.

At least newspapers know reality:

"Full Page Ad (8x10) Half Page Ad (8x5) Quarter Page Ad (4x5)"


4/3 sensor is STILL about 1/4 of the size, not 1/2, of full frame.

It's not pedantry, it's accuracy.

The image area factor is typically mentioned in discussions of light gathering ability, because if you are discussing linear resolution then 110 would be about half the size of 135.

Linear resolution still places it at about 1/4, not 1/2..

8 x 10 at 100 ppi = 800 x 1000 pixels = 800 000 = 1/1

4 x 5 @100 = 400 x 500 = 200 000 = 1/4

4 x 10 @100 = 400 x 1000 = 400 000 = 1/2

But.. nevermind..

So much for accuracy, look up the word linear.

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