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Re: [OM] Olympus Macro review.

Subject: Re: [OM] Olympus Macro review.
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sun, 19 May 2013 08:01:35 -0400
I still don't see it because the Nikon scan image you sent is very 
small.  Perhaps you made a mistake and sent the wrong image.  The 5D II 
scans are very noisy with grain.  I don't think more resolution is 
helpful there.

Chuck Norcutt


On 5/18/2013 11:52 PM, C.H.Ling wrote:
>
> ----- Original Message -----
> From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
>
>
>> I don't understand what this is supposed to show us.  You say the Nikon
>> scanner can do a better job than the 5D II with 80/4 but the 4000ED
>> image you show us is quite small and labeled 300dpi.
>>
>
> Sorry, it was a typo, the Nikon scan was done at 3000dpi. Since I was making
> around 10,000 scan, 4000dpi 16bit tiff will occupy too much space so I did
> most of my scanning at 3000dpi.
>
>> The 5D II images are much larger but seem to me to be mostly grain.  If
>> the grain is resolved don't we have everything there is to get from the
>> image?
>>
>
> You can look at the roofs details, some finer roofs is clearly visible on
> the Nikon scan but marginal on the 1:1 5D II copy, while the magnified (~2x
> with macro adapter) copy shown more details. I'm sure with better slides and
> better lens (the Sigma wasn't the best) it will require higher resolution
> copy/scanning system to review all the details.
>
> C.H.Ling
>
>> Chuck Norcutt
>>
>>
>> On 5/18/2013 1:53 AM, C.H.Ling wrote:
>>> I think the E-M5 may not be able to resolve a good 35mm frame. While I
>>> was
>>> working with the 80/4 and 5D II setup, I found it is not even able to get
>>> all from an old 35mm Kodak CP100. The result is ok for most application
>>> but
>>> not the best one can get, a sharp 4000dpi scanner like N*kon 4000ED seem
>>> did
>>> better.
>>>
>>> Here is a crop from a 1984 Beijing shot taken with Sigma 35-70/2.8-4 on
>>> OM-10, handheld.
>>>
>>> 4000ED at 300dpi
>>>
>>> www.accura.com.hk/temp/1984-09B-35.jpg
>>>
>>> 5D II, 80/4 at 1:1, F11
>>>
>>> www.accura.com.hk/temp/IMG_0088.jpg
>>>
>>> 5D II, 80/4 and f=170mm macro adapter
>>>
>>> www.accura.com.hk/temp/IMG_0089.jpg
>>>
>>> C.H.Ling
>
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