Well,
IMHO you cannot see both lenses, comparing each element.
First, sensor size vs film plane is different and focal lenght is the
same so lenses aren´t exaclty the same.
One of the biggest disadvantages of macro lenses is that they are
optimized for close distances. I think Olympus decided to add one ED
glass element to this lens to broaden the range of uses. Minimum
focusing distances are the same, both are 1/2x and the only difference
between them (this is very personal) is that ZD 50/2 is also optimized
also for infinity giving an outstanding resolution across the whole
range. Number of blades is higher just only for bokeh!!!
Here is a clear example of another picture I took with it at f2!!!.
http://www.myfourthirds.com/document.php?id=15525
So we could say this lens is an hybrid between ZUIKO 100/2 and 50/2.
Regards,
Dave
Wayne Harridge wrote:
>> Things can only be exactly the same if they are the same - that is,
>> there is only one of them.
>> This sounds like a nitpick but in some areas it is a vital
>> concept. Identical twins are not really identical because
>> there are two of them. So, of course, you're quite right.
>> Time for a little pedantry, hey? Andrew Fildes afildes@xxxxxxxxxxxxx
>>
>>
>
> Yeah, I guess you could say several instances of the Zuiko 50/2 have the
> "same design", though they are not "identical" if they were constructed
> based on a single set of design documents.
>
> This is clearly not the case for the Zuiko 50/2 and the ZD 50/2.
>
> ...Wayne
>
>
>
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