I didn't make any test image at F8, I think there will be little or no
improvement at F8, most lenses I tested gave peak performance at 2 stops
from maximum aperture especially the center. I used the lowest sharpness
setting during RAW conversion, you will see big improvement when some
sharpness is added in post processing.
The test images are equivalent to 40MP at FF, I consider the results are
already excellent.
C.H.Ling
----- Original Message -----
From: "John Hudson" <OM4T@xxxxxxxxxxx>
> CH ......... thanks for these images. The 90mmF4 image looks just a trifle
> sharper on screen than does the F2 image but not by much at all. Would an
> F8
> image be any improvement over the F4 one ?
>
> jh
>
>
> ----- Original Message -----
> From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Thursday, April 15, 2010 12:46 AM
> Subject: Re: [OM] 90/2, zoom vs. prime and stuff [was Dude,who cares about
> .56ms?]
>
>
>> 90/2 peforms very well in 4/3 system, the bokeh is generally better than
>> with FF may be due to the working distance I usually do.
>>
>> Here are two test shot at full resolution:
>>
>> http://www.accura.com.hk/temp/90mmF2.jpg
>>
>> http://www.accura.com.hk/temp/90mmF4.jpg
>>
>> Here are a few flower samples:
>>
>> http://www.accura.com.hk/temp/P3023210.jpg
>>
>> http://www.accura.com.hk/temp/P3023321.jpg
>>
>> http://www.accura.com.hk/temp/P3023292.jpg
>>
>> Ah! the last one was using liveview and shot at low angle.
>>
>> C.H.Ling
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