A friend just sent me these to links.  I do not look at Ken Rockwell very often, but these looked interesting:

http://www.kenrockwell.com/tech/unsharp.htm

http://www.kenrockwell.com/tech/lens-sharpness.htm

Scott

That´s the first thing I thought about when submitting to Alamy.  Why upsizing?  Let the buyers do that, if they want to...

Yep -- multiple resizings, and multiple re-JPGing is the fastest way to ruin a good image.  I don't understand it either.

They want you to go shoot in a format that can get those sizes naturally.  I believe that some high end DSRLs, 4x5 film and maybe medium format film can all produce images of the requires size.

Got 2 questions after reading that stuff.

Does this make the Sigma SD14 a much better buy considering the seperate RGB CCDs?

If you had a good scanner, for Alamy printing a good pic and then scanning it at the larger size would be better?

has anyone tried this?

http://www.alienskin.com/blowup/index.aspx

Quote from: litifeta on August 12, 2008, 09:46
Got 2 questions after reading that stuff.

Does this make the Sigma SD14 a much better buy considering the seperate RGB CCDs?

If you had a good scanner, for Alamy printing a good pic and then scanning it at the larger size would be better?

Sigma SD14 - not very good at dealing with noise

printing and scanning the print  - no, you would loss detail and possibly add noise printing and again at scanning, better to process in a lossless format eg tiff

If you scan a 35 mm slide with a 4000 dpi film scanner like the Nikon coolscan 4000 or 5000 you will get about a 52 mb file.  Probably, 50% of my alamy pics are done that way.

It is interesting that others have gotten a different bent on the articles than i did.  Maybe, I should reread them.

Scott