Pana 20/1.7 (version II) vs Oly 17/1.8?? Need help deciding.

Started 8 months ago | Discussions thread
kenw
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Re: slowness
In reply to mh2000, 8 months ago

mh2000 wrote:

My nits against the 20 is that it produces starburst highlights (some like, I don't). It also tends to produce green polygon flare patterns (again, I don't like them). It can render things a little harsh.

Good point on the rendering - forgot to mention that.  The rendering and bokeh are a bit different on the two lenses and that is very much a taste kind of thing.  The 20 has more of an "energetic" bokeh that some find appealing and others a bit distracting.  Really it probably more depends on the subject and composition as to whether it is desirable or not.  The 17 is a smoother bokeh.

As to the speed I also perceive the difference you mention and the more failures to focus in low light than the 17.  But as someone else linked Anders showed in some controlled conditions there isn't much of a difference.  AF performance is a really hard thing to measure and also perceptions are sometimes different from reality too.

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Ken W
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