Da 21 help needed

racingsnake · 10-18-2013, 04:31 AM

Originally posted by Driline

So what is the sweet spot? F 6.7 ?

Spot on!!!6.7-7.1 for sure.
F-8 loses most of the detail due to difraction.

normhead · 10-18-2013, 08:38 AM

Originally posted by Driline

So what is the sweet spot? F 6.7 ?

It's only lost less than 10% resolution by F8. ƒ8 is still in klaus' excellent range.

F8 photo

But even at f22, diffraction has set in, but you can still take a nice picture. Sharpness isn't everything. Sometimes having more of the scene in good focus is better than having a fraction of the scene in excellent focus.

F22 image

Where the sweet spot is depends on the scene being captured.

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10-18-2013, 04:31 AM	#31
racingsnake Veteran Member Join Date: Mar 2012 Posts: 431 Original Poster	Originally posted by Driline So what is the sweet spot? F 6.7 ? Spot on!!!6.7-7.1 for sure. F-8 loses most of the detail due to difraction.

10-18-2013, 08:38 AM	#32
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	Originally posted by Driline So what is the sweet spot? F 6.7 ? It's only lost less than 10% resolution by F8. ƒ8 is still in klaus' excellent range. F8 photo But even at f22, diffraction has set in, but you can still take a nice picture. Sharpness isn't everything. Sometimes having more of the scene in good focus is better than having a fraction of the scene in excellent focus. F22 image Where the sweet spot is depends on the scene being captured.