Re: [OM] Hats off - Zuiko 300mm ƒ/4,5 <--> 85~250mm ƒ/5 shootout, by Chuck.

[Chuck Norcutt]

Yes, I noticed that wide open performance immediately myself.  But I was 
more or less prepared for that from your frequent praise of the lens. 
But my biggest surprise was how close the 85-250 is after a bit of 
stopping down.  I hadn't previously thought it was that sharp but then I 
realized I've used it very few times and always on distant subjects 
where I was contending with atmospheric turbulence.  Even these images 
have to contend with some testing problems.  It was late afternoon 
before I could get to the test.  The sun was going down (changing light) 
and the wind was starting to pick up (motion blur).  The test subjects 
are just what was readily available in the yard or the shed that also 
had some color.

Chuck Norcutt

Ken Norton wrote:
>> It would have been nice to do a more controlled test indoors with flash
>> (no wind or changing light) but it's difficult to shoot at 40-50 times
>> focal length indoors in a small house at 300mm  (I'll save you the math,
>> that's 12-15 meters.  The 85-250 is clearly softer wide open at 250mm
>> than the 300/4.5.  But the difference narrows pretty quickly on stopping
>> down.  Pixel peeping 12.7MP images not shown here.  :-)
>>
> 
> 
> Interesting observation, Chuck.  The one thing I marvel at with the 300/4.5
> is how absolutely usable it is wide-open.  There are very few lenses of any
> type that can claim that.
> 
> AG
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