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04-01-2008, 07:51 PM   #16
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QuoteOriginally posted by Gooshin Quote
this is an 800X600 image

i would not judge sharpness based off that.
Well then, how about a 800x600 100% crop from the original and no PP, for the pixel peeper in the front row wearing binoculars ;-)



For reference;
resized from original to 1000x668;



04-01-2008, 09:25 PM   #17
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A picture is considered sharp when a point object in the photographed image does not form an image larger than 0.2 mm. The 0.2mm is an average figure.
04-01-2008, 09:35 PM   #18
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QuoteOriginally posted by selar Quote
A picture is considered sharp when a point object in the photographed image does not form an image larger than 0.2 mm. The 0.2mm is an average figure.
This definition is commonly used to define what is within the depth of focus, and is based on an 8X10 inch print. If you want a 16x20" print, you will need 0.1mm points.
04-01-2008, 10:26 PM   #19
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the definition is actually based on a person with average vision, looking at a print from a "a comfortable" viewing distance of 25 centimetres. The angle of view of the average human is 60 degrees at a distance of 25 centimetres. This angle of view of 60 degrees roughly corresponds to the diagonal of a 8 x 10 inch print.

As long as you keep to viewing angle of 60% compassing the diagonal of the enlarged frame, the 0.2 mm does not change.

What we do whilst pixel peeping is very different from that, we are looking at a 5foot by 3 foot image at a distance of 25 centimetres.

04-02-2008, 08:01 AM   #20
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QuoteOriginally posted by metalfab Quote
Well then, how about a 800x600 100% crop from the original and no PP, for the pixel peeper in the front row wearing binoculars ;-)



For reference;
resized from original to 1000x668;

that is in focus, but i wouldnt call it a benchmark of sharpness
04-02-2008, 05:43 PM   #21
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QuoteOriginally posted by Gooshin Quote
that is in focus, but i wouldnt call it a benchmark of sharpness
I never said anything about a "benckmark" and you are too picky ...maybe you should buy an M85 and that way not feel left out ;-)

It's just a crane shot and will never get printed. It's just an example of a "hand-held random look up and shoot for the heck of it". Nothing that will be entered in PPG but, who cares.

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04-02-2008, 06:15 PM   #22
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QuoteOriginally posted by metalfab Quote
I never said anything about a "benckmark" and you are too picky ...maybe you should buy an M85 and that way not feel left out ;-)
-

Looking at that 100% crop its easy to understand why the M85/2 deserves its "-" (Poor) rating in the Splosdb. Another reason to trust the Splosdb, IMHO.
04-02-2008, 06:22 PM   #23
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That shot of the 85/2 is pretty sharp considering you were shooting at f/11. Where's your focus point? I guess at infinity on the crane?

04-02-2008, 06:52 PM   #24
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QuoteOriginally posted by metalfab Quote
I never said anything about a "benckmark" and you are too picky ...maybe you should buy an M85 and that way not feel left out ;-)

It's just a crane shot and will never get printed. It's just an example of a "hand-held random look up and shoot for the heck of it". Nothing that will be entered in PPG but, who cares.

-
i currently have a large enough library of lenses

and yes, i am picky, i am currently working towards becoming a photography professional, for better or for worse its best to set a really high standard early and weed out the mediocre stuff.

feel free to disagree.
04-02-2008, 06:54 PM   #25
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QuoteOriginally posted by Gooshin Quote
feel free to disagree.
I agree.
04-02-2008, 06:59 PM   #26
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QuoteOriginally posted by selar Quote
Looking at that 100% crop its easy to understand why the M85/2 deserves its "-" (Poor) rating in the Splosdb. Another reason to trust the Splosdb, IMHO.
Wow, you really think thats a poor image quality considering the F stop (f11) and the overcast sky?
04-02-2008, 07:01 PM   #27
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QuoteOriginally posted by Gooshin Quote
feel free to disagree.
I disagree. If you are aspiring to be a "pro" I'm sure you already know not all "pro" shots are "sharp", some are taken out-of-focus, etc. on purpose.
04-02-2008, 07:56 PM   #28
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QuoteOriginally posted by metalfab Quote
Wow, you really think thats a poor image quality considering the F stop (f11) and the overcast sky?
If you want to put up a shot, showcasing the sharpness of your lens, its your responsibility to take the shot at the sweet spot of the lens, and in ideal conditions.
04-02-2008, 08:01 PM   #29
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QuoteOriginally posted by selar Quote
If you want to put up a shot, showcasing the sharpness of your lens, its your responsibility to take the shot at the sweet spot of the lens, and in ideal conditions.
"Ideal conditions" are not real-world shots. I posted a random shot to showcase what this lens can do at any given time.
04-02-2008, 08:38 PM   #30
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QuoteOriginally posted by metalfab Quote
I disagree. If you are aspiring to be a "pro" I'm sure you already know not all "pro" shots are "sharp", some are taken out-of-focus, etc. on purpose.

we are not talking about purpously out of focus shots, are we now?

we are talking about level of sharpness and how one judges what is sharp and what it is not.

if you feel that a particular photograph is sharp, thats your call, my bar is higher.
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