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Old Mar 9, 2010, 3:39 PM   #11
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I'm curious as to where you were pointing the center of the EVF at when you obtained focus (assuming you have the camera set to center spot focus). It appears that each image has a different focus point.
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Old Mar 9, 2010, 4:05 PM   #12
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I did not use center spot, I let the camera choose. That would account for the different focal points.
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Old Mar 9, 2010, 5:05 PM   #13
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Quote:
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I did not use center spot, I let the camera choose. That would account for the different focal points.
You mean focus point, not focal point, right? They are two different things. I always set the focus on my cameras to center spot to avoid exactly this...not knowing where the camera is focusing. I prefer to choose the focus point myself, then recompose and shoot. Since the three images have different focus points, it's really hard to tell which aperture is the lens sweet spot.
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Old Mar 9, 2010, 5:16 PM   #14
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yup focus points. Normally I choose my points also. I was just seeing how the lens would react when I let is choose it's points at such a close distance of inches
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Old Mar 9, 2010, 5:53 PM   #15
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i think what we want to see is. the exact same image focused exactly the same at a series of apertures? at least thats what i think tulio is asking for
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Old Mar 9, 2010, 6:08 PM   #16
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I try to see if I have some time tomorrow, well give the same af point for all the shots. It should not be a problem.
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Old Mar 9, 2010, 9:53 PM   #17
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Quote:
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i think what we want to see is. the exact same image focused exactly the same at a series of apertures? at least thats what i think tulio is asking for
You got it! Otherwise, it's impossible to determine the lens sweet spot.
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Old Mar 10, 2010, 10:50 AM   #18
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Here are 3 test shots with center focus point. All at 200iso. F9 1/200, f14 1/80, f22 1/80.
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Old Mar 10, 2010, 1:58 PM   #19
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Usually, the sweet spot of most lenses is around f8-f11 (anywhere in between depending on the lens). However, it seems like in this case f14 produced the best image followed by f9 and then f22.
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Old Jun 2, 2010, 8:47 PM   #20
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Just two sample with the lens outdoors. First shot, no editing just resized. Second shot minor enhancement in vibrancy
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