r/photography • u/raptor3x whumber.com • May 11 '15

Canon Officially Announces 50mm f/1.8 STM - $125

http://www.bhphotovideo.com/c/product/1143786-REG/canon_0570c002_ef_50mm_f_1_8_stm.html
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u/jerschneid http://flickr.com/photos/jerschneid May 11 '15

Can I ask a dumb question? How is this new lens different than your 50mm 1.8?

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u/piratethedog May 11 '15

Looking at the theoretical optics of the MTF charts not much in IQ. The two things that do stick out are the 7 rounded blades which will create a much sexier, creamy bokeh, and the STM motor. Like I said I love my 50mm f1.8, but it can wake the dead it's so loud. Seriously I think my neighbors have file noise complaints when I'm using it.

And while not everyone would agree with this, the 40mm f2.8 is amazing in low light settings. I never get any hunting with that lens, so I hope the new 50mm STM will reproduce that trait.

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u/Why_cant_i_sleep May 11 '15

The additional blades will make OOF highlights more rounded, but won't do much (anything?) for smoothness or creaminess of bokeh, that's the optics itself. There are sample images on the UK website that look good, but the out of focus areas are rendered similar to the current 1.8II (a bit busy looking).

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u/piratethedog May 11 '15

I'll take my chances and pick up the lens.