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The woes of Cropping
Old 08-12-2005, 08:34 AM   #1 (permalink)
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When I crop an image to PRINT, I find that I can't crop [to the desired size] and have the entire image in the crop. For instance, the enclosed pic I wanted to crop to 11x14. But with that crop size, 1/4 of the bottom of the pic (from her wrist down) would've been cropped out so I had to move the crop lines to extend to the bottom of the pic. This in turn added 'space' on the left and right side of the pic. Am I doing something wrong? Can I crop to the desired size without having the black/white bars on the left and right side?





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Re: The woes of Cropping
Old 08-12-2005, 09:17 AM   #2 (permalink)
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Cropping is a ratio thing. For instance, my camera sensor has a 2 to 3 ratio. If I want a full crop of the entire frame I have to stay with that ratio (4x6, 8x12, 16x24, etc). If I want an 8x10 then there will be some of the image cropped off (8x10 is a 4 to 5 ratio). So the cropping thing has to be thought of before you frame your shot. If you are going to shoot to crop to 11x14 you need to know the ratio of your sensor (or film) and then shoot to leave room for the crop.

That said, I'm under the impression that if your portfolio has images in it that have borders down the sides, it's not a bad thing. But... my suggestion is that you make the borders match the backing for the page in your portfolio (i.e. white on white or black on black).

Hope this helps...

Mark

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Re: The woes of Cropping
Old 08-12-2005, 09:20 AM   #3 (permalink)
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Nope. Your only true option is leaving enough space when shooting the image originally to allow cropping to a standard measurement like 11 x 14. After the fact, it boils down to proportions. Since an exposure frame isn't a smaller version of 11 x 14 -- somethings gotta give. However, you could make up the space difference with a matte when framing if the final location of the image will be on a wall somewhere.

Good luck,
Dave
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Re: The woes of Cropping
Old 08-12-2005, 09:26 AM   #4 (permalink)
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OK, so you are going to make me break out the calculator. [img]/ubbthreads/images/graemlins/grin.gif[/img] If I remember correctly, the 20D (my camera) has a 3:2 ratio.

Thanks
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Re: The woes of Cropping
Old 08-12-2005, 09:37 AM   #5 (permalink)
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And I was always taught to frame/crop in camera so that I have little post processing work...I guess rules are meant to be broken.

Thanks for your help
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Re: The woes of Cropping
Old 08-12-2005, 09:38 AM   #6 (permalink)
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calculator? and I thought that my abacus was high tech... Yep, most sensors are about a 2:3. When I shoot I try to ask ahead of time what size their book is so that I can leave enough room to do the crop. If you are shooting against a high key or plain color backdrop then, if you shoot with some side margin, you can add to the image in Photoshop to give you some cropping room.

What's really a trick is when your client asks for a 5x7, 8x10, 9x12, and 11x14 and wants them to all bne exactly the same. [img]/ubbthreads/images/graemlins/confused.gif[/img]
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Dumb blonde question
Old 08-12-2005, 09:43 AM   #7 (permalink)
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I just checked out some Canon's and Nikon's DSLR line up. Most of them have the 3:2 ration. If the most poopular [consumer] prints are 5x7, 8x10 and 11x14, why would the manufactures make a sensor that is a 3:2 ratio?

Am I missing something here?
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Re: Dumb blonde question
Old 08-12-2005, 09:59 AM   #8 (permalink)
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Not a dumb question and I don't know why -- perhaps someone here knows and can answer. I do know that many commercial studios use medium and large format film cameras so that the cropping isn't a big issue. I think (not sure) that some of the digital backs for the large and medium format cameras have a square (or almost square) format.

[img]/ubbthreads/images/graemlins/confused.gif[/img]
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Re: Dumb blonde question
Old 08-12-2005, 09:59 AM   #9 (permalink)
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[ QUOTE ]
I just checked out some Canon's and Nikon's DSLR line up. Most of them have the 3:2 ration. If the most poopular [consumer] prints are 5x7, 8x10 and 11x14, why would the manufactures make a sensor that is a 3:2 ratio?

Am I missing something here?

[/ QUOTE ]

It's just based on the ratio a 35mm frame of film roughly works out to.
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Re: Dumb blonde question
Old 08-12-2005, 10:15 AM   #10 (permalink)
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[ QUOTE ]
Not a dumb question and I don't know why -- perhaps someone here knows and can answer. I do know that many commercial studios use medium and large format film cameras so that the cropping isn't a big issue. I think (not sure) that some of the digital backs for the large and medium format cameras have a square (or almost square) format.

[img]/ubbthreads/images/graemlins/confused.gif[/img]

[/ QUOTE ]

Large format and many medium format camera film frames are based on a 4x5 frame. So, by multiplying you get an enlargement of 8x10, 16x20, etc. Some medium format frames are square (most Hassleblads are). A 35mm frame is longer in relationship to the width, so it doesn't traslate to an 8x10 with out cropping some of the length.
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