Sharpening, how can I tell?

[dpp]

Hello

Just a quick question

I use the following sherpening method

Create Duplicate layer, sharpen using unsharp mask, percentage to taste, radius 0.7
threshold 1, I use luminoscity as the mode and then adjust opacity accordingly.

My question is , my prints are all sized to 6x4, at 25% screen size they look a tad digital, when I zoom in over 50% they look tack sharp.

I have not had them printed as yet , but at what size shouls they be viewed so that it accurately reproduces what I will get from my prints.

Hope this makes sense.

[PhotosGuy]

You should zoom in to 100% when you're sharpening to see the effect.
Sticky: Post Processing Tutorials List
http://photography-on-the.net/forum/showthread.php?t=34489

[Hellashot]

You should zoom in to 100% when you're sharpening to see the effect.
Sticky: Post Processing Tutorials List
http://photography-on-the.net/forum/showthread.php?t=34489

It depends on what you're sharpening for. If you're sharpening for a 4x6 there's no need to view it at 1:1. For 4x6 zoom to a view that is about the size of a 4x6 and sharpen. For an ISO 100 image printing 4x6 usually use radius 1 percent 400 (from a RAW image).

[jackies35]

What happens when you didn't shot in Raw??

[shocksyde]

Shooting in RAW or JPG shouldn't make a difference when sharpening.

[tim]

JPGs are sharpened in the camera, RAW are not, but sometimes the RAW convertor does some sharpening. So yeah RAW/JPG does matter, but not hugely.

[Hellashot]

Generally for printing, you should apply more sharpening than you think you should when you're viewing at 100% becuase your prints will come out 25% of that size.

[ssim]

What happens when you didn't shot in Raw??
It depends on what your in camera parameters are. You can apply alot of sharpening right down to very little. You can still sharpen your jpg in post processing.

I agree with Hellashot, when sending for print, mine look slightly over-sharpened on the screen but the prints come back good.

[tim]

Generally for printing, you should apply more sharpening than you think you should when you're viewing at 100% becuase your prints will come out 25% of that size.

Would you mind explaining your 25% comment, and how you arrived at that figure?