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General photography questions and answers: Discuss Crops...This may seem a pretty dumb question...but then I,m pretty thick when it comes to all things computer; How is ...
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Old 12-11-2008, 00:03   #1 (permalink)
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Crops

This may seem a pretty dumb question...but then I,m pretty thick when it comes to all things computer; How is a 100% crop measured?
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Old 12-11-2008, 07:48   #2 (permalink)
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Re: Crops

Ahh, the 100% crop question! I always take it to mean a crop/selection of part of the image without reducing or enlarging the size. Usually to show how brilliant/dire (delete as appropriate!) the lens/camera combo may be
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Old 12-11-2008, 08:09   #3 (permalink)
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Re: Crops

I thought it was related to the 'actual size' menu option in Photoshop. Selecting this option will display the image at actual - i.e. 100% - size and it will usually be far too big to fit onto the monitor. However, you can crop out a bit of this image that will fit onto the screen - the crop - and it is at 100% of the size of the photo. This is done to show the quality (or lack of) of the image.

Hope that makes sense.
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Old 12-11-2008, 21:52   #4 (permalink)
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Re: Crops

Actually you have both said the same thing in a different way. It is exactly that, just a crop whereby the pixels are not changed, interpolated etc. When cropping, you have the dimension sizes boxes on the toolbar along with the resolution box. If you click the CLEAR button, it will remove all of these so that when you crop, you are not applying any new dimensions or changing the pixels in any way, hence a 100% crop

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Old 12-11-2008, 23:35   #5 (permalink)
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Re: Crops

You know..there are times when my head hurts!
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Old 13-11-2008, 00:49   #6 (permalink)
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Re: Crops

100% crop is when 1 camera pixel = 1 pixel on your display/screen.

Here's an example. My D3 files are 4256 pixels wide by 2832 pixels tall, but my monitor's resolution is 1280 pixels wide by 1024 pixels tall.

If I'm viewing a shot from my D3 so that it fits the width of my monitor, then it needs to be at just over 1/3 (33%) of its original size.

On the other hand, when I magnify the shot so that I'm seeing it at "100% crop", I can only see about 1/3 of the picture on my screen. That way, I can see the detail that has been recorded right down to the individual pixels that make up the image.

That's part of the reason why viewing images at full magnification is called pixel peeping.
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Old 13-11-2008, 17:53   #7 (permalink)
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Re: Crops

Are you saying, that when I view pics in photoshop at "actual pixals" thats at 100% crop ? My headache is getting worse!
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Old 13-11-2008, 18:40   #8 (permalink)
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Re: Crops

Samleo

Yes, that's pretty much it. Viewing "actual pixels" is 100% crop, or 100% magnification (or whatever word you use to describe it); basically you're viewing the image at a level where one pixel from your camera equals one pixel on your screen.
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Old 13-11-2008, 20:03   #9 (permalink)
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Re: Crops

Everyone is describing 100% view perfectly. The crop is whatever section of the original photo you decide to keep.

It's much easier with an example, so take a look here :- http://www.pixalo.com/community/phot...tml#post219793 . You'll notice the 100% crop has been cropped enough so that it can be displayed at 100% on most peoples web browser.

Hope that makes sense.
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Old 14-11-2008, 00:13   #10 (permalink)
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Re: Crops

Well thanks for all the imput, I reckon I,ve cracked it; taking two paracetamol and going to bed now!
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Old 14-11-2008, 07:53   #11 (permalink)
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Re: Crops

Quote:
Originally Posted by samleo View Post
Well thanks for all the imput, I reckon I,ve cracked it; taking two paracetamol and going to bed now!
Is that two packets?
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