Question on photo size


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xtin88

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Nov 3, 2009
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#1
Hi, need some help where i'm currently using the D90 and the image size is at 4,288 x 2,848.
I want to know if i wish to wash it to 4R, do i have to resize it down? if yes, what size should i resize it to?

Been searching the forum but cant find a similar thread.
 

Rashkae

Senior Member
Nov 28, 2005
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#2
Been searching the forum but cant find a similar thread.
That's surprising since it's a very common question on here and in the Digital Darkroom thread.

4R = 6" x 4"

4,288 / 2,848 = 1.5, or 6x4.

If you *really* want to be precise, crop the long side to 4272px. Otherwise the photolab will do it for you automatically.

It's just simple maths.
 

xtin88

New Member
Nov 3, 2009
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#5
Sorry but cant help smiling at the statement.
Hehehe... long time since anyone says "wash a photo"
lol yea its lik translating directly from chinese. should be develop.
 

ZerocoolAstra

Senior Member
Mar 13, 2008
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rainy Singapore
#6
Actually... I don't think it's even 'develop' now, since there is no developer chemical used for the negatives (no negatives).

A lot of labs use some sort of digital printer, so technically it's only "print" now :)
 

pchmj

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Sep 8, 2005
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#8
Do we need to send with such a high resolution? From my understanding, it depends on the dpi of the printer. If the printer is 300 dpi, a 4R required resolution is 6x300 and 4x300 which turns out 1800x1200. Anything more than that is not required. I learn this when I send my prints online, from the website.

Is my concept right?
 

catchlights

Moderator
Staff member
Sep 27, 2004
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Punggol, Singapore
www.foto-u.com
#10
Do we need to send with such a high resolution? From my understanding, it depends on the dpi of the printer. If the printer is 300 dpi, a 4R required resolution is 6x300 and 4x300 which turns out 1800x1200. Anything more than that is not required. I learn this when I send my prints online, from the website.

Is my concept right?
that is correct, higher then resolution requirement does not have any benefit on quality, however, it also depends on you, to downsize it for 4R, you need extra workflow, and you also need to keep one additional version of the images. Unless your intension is give the softcopies to others and it only can be printed 4R size only and not other larger paper size.

of course, if you send it for online printing, downsize it will save bandwidth.

hope this help.
 

xtin88

New Member
Nov 3, 2009
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#11
Do we need to send with such a high resolution? From my understanding, it depends on the dpi of the printer. If the printer is 300 dpi, a 4R required resolution is 6x300 and 4x300 which turns out 1800x1200. Anything more than that is not required. I learn this when I send my prints online, from the website.

Is my concept right?
So if i want to go print a 4R photo i need to resize my jpeg to 1800x1200? Sorry i'm not very clear with these printing formats. :(
 

Rashkae

Senior Member
Nov 28, 2005
19,105
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#12
So if i want to go print a 4R photo i need to resize my jpeg to 1800x1200? Sorry i'm not very clear with these printing formats. :(
No, the labs will resize it for you. It's up to you if you want to "pre-resize" it for them.
 

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