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How sharp is tack sharp?
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Jan 30, 2015 10:07:02   #
eggiecom Loc: North Carolina
 
I am back to photography after a loooong absence. Anyway, I used to judge sharpness with my eyes. If the print was sharp where I wanted it to be, that was that!

Now I have this screen and zoom button that allows me to check a picture on the fly and delete it if it's a mess. But I'm confused. This sucker can enlarge the photo until I can see pixels. So, where do I stop? I know it sounds stupid, but how sharp is tack sharp?

I can post a picture I think works, but I'm new here. I believe I have to ask permission first?

Thanks!

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Jan 30, 2015 10:11:22   #
Scoutman Loc: Orlando, FL
 
eggiecom wrote:
I am back to photography after a loooong absence. Anyway, I used to judge sharpness with my eyes. If the print was sharp where I wanted it to be, that was that!

Now I have this screen and zoom button that allows me to check a picture on the fly and delete it if it's a mess. But I'm confused. This sucker can enlarge the photo until I can see pixels. So, where do I stop? I know it sounds stupid, but how sharp is tack sharp?

I can post a picture I think works, but I'm new here. I believe I have to ask permission first?

Thanks!
I am back to photography after a loooong absence. ... (show quote)


Permission? Only from yourself. Read the "Rules" if in doubt of what's expected. Current size limit is 20 mbs, I believe.

If you can post a topic, you may also post pictures.

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Jan 30, 2015 10:13:44   #
gregm Loc: Near Sacramento, CA
 
looking forward to your photo... I have a similar question so I'm interested in everyone's take on the subject.

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Jan 30, 2015 10:15:08   #
eggiecom Loc: North Carolina
 
Scoutman wrote:
Permission? Only from yourself. Read the "Rules" if in doubt of what's expected. Current size limit is 20 mbs, I believe.

If you can post a topic, you may also post pictures.


Thank you! I will do that.

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Jan 30, 2015 10:17:11   #
Old Timer Loc: Greenfield, In.
 
I usually magnify 200% and and if still reasonably sharp I go ahead pp it. I you are going to crop you need an extra sharp photo. I found that this works for me. I you are not going to crop you do not have to be as particular. This is where a tripod comes in especially in poor light or at a distance.

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Jan 30, 2015 10:18:36   #
RWR Loc: La Mesa, CA
 
eggiecom wrote:
I am back to photography after a loooong absence. Anyway, I used to judge sharpness with my eyes. If the print was sharp where I wanted it to be, that was that!

Now I have this screen and zoom button that allows me to check a picture on the fly and delete it if it's a mess. But I'm confused. This sucker can enlarge the photo until I can see pixels. So, where do I stop? I know it sounds stupid, but how sharp is tack sharp?

I can post a picture I think works, but I'm new here. I believe I have to ask permission first?

Thanks!
I am back to photography after a loooong absence. ... (show quote)


If it looks sharp enough to you, either on your monitor or a print, it is sharp enough. :) (I think most of us fuss too much over this, myself included!)

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Jan 30, 2015 10:20:26   #
Cdouthitt Loc: Traverse City, MI
 
I considered this one that I took to be tack sharp...

http://www.uglyhedgehog.com/t-189426-1.html

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Jan 30, 2015 10:20:54   #
peterg Loc: Santa Rosa, CA
 
Perhaps, when the photo is published, the photo looks "tack sharp" when viewed at a normal viewing distance. Subjective? Of course. "Published" could mean via print or other means at the intended size. Again subjective. Somewhere I read that the normal viewing minimum distance is about 1 1/2 times the photo's diagonal. Perhaps, it's tack sharp when you are satisfied that you don't want it any sharper.
Trivia: I wonder why folks publish small photos in a lens review. Viewing a 4x6" web page image on my laptop doesn't represent the sharpness of anything.

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Jan 30, 2015 10:25:28   #
eggiecom Loc: North Carolina
 
gregm wrote:
looking forward to your photo... I have a similar question so I'm interested in everyone's take on the subject.


Well, here it is! I love the little "starlets" in the center of the flower, but are they sharp enough?

I re-uploaded the image further down in the thread. Something got list in translation. Thanks for your patience with this newbie! :-)

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Jan 30, 2015 10:27:36   #
Cdouthitt Loc: Traverse City, MI
 
It's hard to tell, unless you select include original when you upload the file...see my link above.

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Jan 30, 2015 10:27:54   #
dsmeltz Loc: Philadelphia
 
eggiecom wrote:
I am back to photography after a loooong absence. Anyway, I used to judge sharpness with my eyes. If the print was sharp where I wanted it to be, that was that!

Now I have this screen and zoom button that allows me to check a picture on the fly and delete it if it's a mess. But I'm confused. This sucker can enlarge the photo until I can see pixels. So, where do I stop? I know it sounds stupid, but how sharp is tack sharp?

I can post a picture I think works, but I'm new here. I believe I have to ask permission first?

Thanks!
I am back to photography after a loooong absence. ... (show quote)


It can be difficult to determine the sharpnes of a picture from the screen on camera. Unless it is obviously out of focus, as in I can see the background is sharper than the subject, I keep them unitl I can check at home after download.

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Jan 30, 2015 10:29:34   #
brucewells Loc: Central Kentucky
 
eggiecom wrote:
I am back to photography after a loooong absence. Anyway, I used to judge sharpness with my eyes. If the print was sharp where I wanted it to be, that was that!

Now I have this screen and zoom button that allows me to check a picture on the fly and delete it if it's a mess. But I'm confused. This sucker can enlarge the photo until I can see pixels. So, where do I stop? I know it sounds stupid, but how sharp is tack sharp?

I can post a picture I think works, but I'm new here. I believe I have to ask permission first?

Thanks!
I am back to photography after a loooong absence. ... (show quote)


Everyone's eyes see things differently. However, view the image at 100% (this option is usually a standard in most software) and if it looks sharp to you, it probably is.

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Jan 30, 2015 10:31:22   #
jeryh Loc: Oxfordshire UK
 
I have been a photographer for 60 odd years; one day, I went to see a pro wedding photog; I wanted to get his opinion on some shots i had taken; well, said he, they are OK, but... they aren't sharp ! So, I was really surprised, and said so. OK he said, come with me, and I'll show you.
He produced one of his specimen folders he produced for clents; well, they blew me away, I mean completely. They were so sharp, you could have done yourself serious injury ! After that, he siad, all you have to do is concentrate on your subject; the results will speak for themselves - you will know when sharp is sharp ! Hope this helps

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Jan 30, 2015 10:31:48   #
agillot
 
on the other hand , when is a picture too sharp , at time i look at a photo , and it looks unnaturally sharp , almost phony ????

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Jan 30, 2015 10:32:15   #
eggiecom Loc: North Carolina
 
Cdouthitt wrote:
It's hard to tell, unless you select include original when you upload the file...see my link above.


Let me try that upload again. Something got lost in translation.


(Download)

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