Author Topic: soft and lacking definition (Read 7401 times)

NikonScott · « **on:** August 11, 2008, 13:32 »

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

Magnum · « **Reply #1 on:** August 11, 2008, 14:04 »

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

astrocady · « **Reply #2 on:** August 11, 2008, 15:36 »

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

Steve · « **Reply #3 on:** August 11, 2008, 23:00 »

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.

litifeta · « **Reply #4 on:** August 12, 2008, 03:46 »

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?

litifeta · « **Reply #5 on:** August 12, 2008, 03:58 »

has anyone tried this?

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

michealo · « **Reply #6 on:** August 12, 2008, 05:16 »

Quote from: litifeta on August 12, 2008, 03:46

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

NikonScott · « **Reply #7 on:** August 12, 2008, 11:23 »

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