It is a rough figure but not far away, here is an example at 14mm setting,
the overall image may not be very sharp due to slow shutter speed but you
can see the focus is on the dish (or the drink) while it should be on the
face.
http://www.accura.com.hk/temp/PC090020.jpg
If focus shift is due to sensor positing error in the vertical plan (i.e.
just up/down or left/right) it is ok as the target will still be sharp. I
will not accept any focus shift which will cause image softness.
C.H.Ling
----- Original Message -----
From: "Frank van Lindert" <Frank@xxxxxxxxxxxxx>
> CH, is it _really_ as bad as that, 2 ft instead of 3 ft, or are these
> figures just serving as an example of the phenomenon? If the figures
> are from real life, then I would return that E-520 immediately and
> not even bother having it repaired or consider to buy another.
>
> I own a E-400 and the focusing error is only 1 mm when the actual
> object distance is 300mm. Or to put it (roughly) in those terrible
> imperial measures, the error equals 1/32 inch at a 1 foot distance.
> Quite acceptable, I would say ;-)
>
> How much is the real error with your E-520?
>
> Frank van Lindert
> Utrecht NL.
>
> Sun, 21 Dec 2008 20:27:23 +0800, "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
> wrote:
>
>>I mean when you focus an object three feet away, the lens actually focused
>>to two feet. The problem is very consistant and repeatable. It seems that
>>the lower the color temp. (ambient light) the more it shifted.
>>Unfortunately, even under sunlight it still shift a little with both the
>>kit
>>lens and my old version 40-150. The E-3 I once owned also had the same
>>problem with the 11-22 and 50-200 but it was ok with 14-45 and 40-150.
>>
>>C.H.Ling
>>
>>----- Original Message -----
>>From: <bj@xxxxxxxxxxxxxxx>
>>
>>> C.H.Ling wrote
>>>>
>>>> Don't know about E-420 but the E-520 I just purchased is solid built,
>>>> image quality is on par with E-3 and focus is very fast. Unfortunately
>>>> it
>>>> has front focus problem, quite consistent and serious especially at the
>>>> wide end. I backed to the shop and tried for another three, all have
>>>> the
>>>> same problem. I'm planning to send the camera to Olympus for repair
>>>> after
>>>> new year.
>>>
>>> CH, can you explain please what you mean by "front focus problem"? I
>>> don't really understand what you are saying (since all focus has to be
>>> in
>>> the
>>> front).
>>>
>>> Thanks, Brian Swale
>>>
>>> Brian Swale. Daytime phone 03 326 7447
>>> http://homepages.caverock.net.nz/~bj/
>>> Mobile 021 143 4249
>>> 3/7 Menzies Street, Sumner, Christchurch 8081
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