Archived posting to the Leica Users Group, 2010/03/27

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Subject: [Leica] IMG: S2 resolution
From: mark at rabinergroup.com (Mark Rabiner)
Date: Sat, 27 Mar 2010 09:59:16 -0400

> Rabs,
> 
> Thanks for the comments!  Probably good to add a few details.
> 
> This was walking along and taking a picture, everything automatic, ie. 
> nothing
> set perfectly.  Only one shot.
> 
> Selective sharpening was not used.  The sign was a few feet away and the
> mountain over a mile.  I can easily check that, it is across the street.
> 
> A Sinar on a tripod is easier to focus for a scene like this, it's got a 
> DOF
> calculator as you know, but everything else about using a Sinar would have
> been 
> harder.
> 
> The pop-ups are like looking at a 75" wide print (assuming 100dpi monitor).
> How 
> far away is your screen from your eye?
> 
> 
> John
> 
> 
> Mark Rabiner wrote:
>>> http://www.ancientmoney.org/late_winter.html is a clickable image which 
>>> will
>>> show a full resolution pop-up of any area of the photo.
>>> 
>>> I should not have used ISO 1250, but did.  I could also have done better
>>> with
>>> DOF if I knew the optimum aperture of the lens and shut off autofocus.  I
>>> could 
>>> easily confess more ignorance as I've been endowed with a surplus.
>>> 
>>> 
>>> John
>>> 
>>  Most of the foreground and this is where you eye goes to first is out of
>> focus. Looks like you focused on infinity, the mountains in the background
>> are much sharper than anything else in the shot.. The mountain in the
>> background is sharp and the house just about looks ok. I'm talking about 
>> the
>> snow covered trees. Oddly fuzzy with the stop sing post looking sharpened.
>> Did you not sharpen the whole image but only sections?
>> You need to sharpen the whole image. Unsharp means sharp. Unsharp mask.
>> I think you have some leeway with medium format but sometimes starting out
>> in a new thing its hard not to get overwhelmed.
>> 
>> 
>> [Rabs]
>> Mark William Rabiner
>> 
>> 
You need to make sure your AF sensor is not aiming at the wrong thing; like
a faraway thing. "automatic" is a relative term you have to MAKE the
automatic stuff do its stuff.

[Rabs]
Mark William Rabiner





Replies: Reply from imagist3 at mac.com (George Lottermoser) ([Leica] IMG: S2 resolution)
In reply to: Message from john.nebel at csdco.com (John Nebel) ([Leica] IMG: S2 resolution)