Cropping an Image

TrevorW · #1 31-03-2009, 02:32 PM

When someone refers to an image as 100% cropped what does this mean.

Also best way to crop or resize an image without losing detail

iceman (Mike) · #2 31-03-2009, 03:14 PM

Hi Trevor

A 100% crop would mean they've zoomed in to 100% in photoshop and taken a crop of a particular area. It's basically fully zoomed in so you can see the warts and all of the image.

telecasterguru (Frank) · #3 31-03-2009, 03:59 PM

Is there any free ware cropping software available for those on a tight budget?

Thanks

Frank

iceman (Mike) · #4 31-03-2009, 04:24 PM

I imagine all image processing software can crop and resize.

"The Gimp" is quite extensive and free.

"Irfanview" is more of a lightweight image viewer but can do basic image processing, including crop and resize. It's also free.

telecasterguru (Frank) · #5 31-03-2009, 04:49 PM

Thanks Mike I'll try gimp.

Frank

troypiggo (Troy) · #6 31-03-2009, 06:41 PM

Gimp has a pretty steep learning curve, but it's extremely powerful. If you're after a quick cropping solution, go with irfanview IMO.

TrevorW · #7 31-03-2009, 09:46 PM

Mike zooming in by 100% gains nothing and degrades the image unless you have considerable data is this not so

Cheers

iceman (Mike) · #8 31-03-2009, 11:05 PM

Trevor I think you misunderstand what i'm saying.

When you open a (for example) 10 megapixel image in photoshop, it shows you a view that fits on your screen, say at 16% of it's size.

If you zoom in until it says 100%, it's showing you the full pixel resolution. If you crop a small area at that 100% full-size, that's what people are referring to when they say "100% crop" or "1:1 pixel crop".

Which is different from cropping the edges off a large image and then resizing to (say) 800px wide.

Octane (Humayun) · #9 31-03-2009, 11:17 PM

Trevor,

I was just working on this image, so, here you go, a crop by example.

Click here.

Regards,
Humayun

P.S. The 5D Mark II blows my mind.

TrevorW · #10 01-04-2009, 11:50 AM

Humayun

Great detail nice camera

Mike I get it

Cheers

Geoff45 (Geoff) · #11 02-04-2009, 09:23 AM

Quote:

Originally Posted by TrevorW

Mike zooming in by 100% gains nothing and degrades the image unless you have considerable data is this not so

Cheers

Not so. If you are not looking at a 100% image, Photoshop is doing an on the fly resampling of your data, for example fitting your 2048 camera pixels into 1024 screen pixels. The 100% image may look terrible, but it contains accurate info about your data. If your data is bad, that's tough, but you are seeing it like it really is. Of course, once you are done processing, there is no harm in zooming out to hide the not-so-nice bits.

desler · #12 02-04-2009, 10:26 AM

Wow! H

Really cool

Daz

Octane (Humayun) · #13 02-04-2009, 06:51 PM

Cheers, Daz.

It really is a joy to use when you see results like that.

I look forward to pointing it to the heavens (the rest of my G-11 arrives next week).

Regards,
Humayun