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Which has better background blurriness?APSC 50mm vs M43 75mm

Started Jan 10, 2015 | Discussions thread
OP ageminmo Forum Member • Posts: 74
Re: Which has better background blurriness?APSC 50mm vs M43 75mm

Anders W wrote:

It's a bit more complicated than that. Which of the two will give more background blur depends on the magnification as well as the distance between the subject and the background. For example, for a head-and-shoulder portrait, the 50/1.8 on APS-C will give slightly more blur if the background is less than 2 meters from the subject whereas after that point, it is the other way around. You can experiment with other cases by means of this background-blur calculator:

http://howmuchblur.com/#compare-1.5x-50mm-f1.8-and-2x-75mm-f1.8-on-a-0.9m-wide-subject

Thanks a lot! Very useful link! Instant bookmarked!

After playing with the graph, I concluded that the effective aperture/sensor format matter most if the background is near.

But the focal length matters most if the background is far(like what the author said). Perhaps you need to be farther from the subject and compresses the background more causing more blurriness.

So I guess Olympus 75mm wins this one!

 ageminmo's gear list:ageminmo's gear list
Sony RX1 Canon EOS RP Olympus E-M1 III Olympus M.Zuiko Digital ED 75mm F1.8 Olympus Stylus 1 +32 more
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