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

Started Jan 10, 2015 | Discussions thread
Anders W
Anders W Forum Pro • Posts: 22,144
Re: Which has better background blurriness?APSC 50mm vs M43 75mm
2

ageminmo wrote:

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!

You are welcome!

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.

Right!

So I guess Olympus 75mm wins this one!

Don't think you will be disappointed.

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus PEN-F Olympus E-M1 II Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +20 more
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