What is 300 DPI?


Status
Not open for further replies.

LOTUSfairy

Moderator
Staff member
Oct 10, 2006
3,340
0
36
Serangoon
#1
I want to sent a (blur) pix from my India trip to PhotoVideo Magazine for them for critic, so I learn where I do wrong with this pix. The requirement is 300DPI...what is 300DPI?

My original pix (in full size) is 4.28MB.. so what should I do to meet the 300DPI?:angel:
 

Rashkae

Senior Member
Nov 28, 2005
19,105
12
0
#2
Do a google search for "DPI" and you'll get "Dots per inch". You can set this property in PhotoShop.
 

LOTUSfairy

Moderator
Staff member
Oct 10, 2006
3,340
0
36
Serangoon
#3
I dun have photoshop...:cry:
so if i just send in my pixs at the original size...izzit oki? equivalent?
 

Rashkae

Senior Member
Nov 28, 2005
19,105
12
0
#5
I dun have photoshop...:cry:
so if i just send in my pixs at the original size...izzit oki? equivalent?
No. By default, your pic is usually 72 DPI.

Try this:

1. Right-click on a picture in windows and select "Properties"
2. Select the "Summary" tab.
3. Make sure the "Advanced" option is selected

You should be able to see your horizontal and vertical DPI.
 

LOTUSfairy

Moderator
Staff member
Oct 10, 2006
3,340
0
36
Serangoon
#6
No. By default, your pic is usually 72 DPI.

Try this:

1. Right-click on a picture in windows and select "Properties"
2. Select the "Summary" tab.
3. Make sure the "Advanced" option is selected

You should be able to see your horizontal and vertical DPI.
yes yes..i see it...it is 300DPI..:vhappy:

thank you thank you
 

Apr 12, 2005
1,767
0
0
#7
whats the point of knowing 300DPI, but dono the size of the print? you will still not know how big(pixel) they are asking for
Spot on!

If 1.5" by 1", then 450x300 = 0.135 Megapixels would be 300 DPI already and the file would probably be about 50KB only.

If 6" x 4", then 1800x1200= 2.16 Mega pxiels would be 300 DPI and the file would probably be about 800KB.
 

LOTUSfairy

Moderator
Staff member
Oct 10, 2006
3,340
0
36
Serangoon
#8
Spot on!

If 1.5" by 1", then 450x300 = 0.135 Megapixels would be 300 DPI already and the file would probably be about 50KB only.

If 6" x 4", then 1800x1200= 2.16 Mega pxiels would be 300 DPI and the file would probably be about 800KB.
thank you for your kind info...will keep in mind..:) :heart:
 

megaweb

Moderator
Staff member
Jan 17, 2002
8,541
3
38
East
megaweb.clubsnap.org
#9
300 dpi is the printing photo quality requirement. It also means if you want to print photo quality (very clear and details), you need to print in 300 dpi.

So how do we calculate ?
300 dpi
= 300 dots per inch
which means 1 inch there are 300 dots

If you want to print 4R which is 6 inches X 4 inches ( or 6" x 4"),
= (6" x 4") x 300
= 1800 x 1200 dots or pixels
 

catchlights

Moderator
Staff member
Sep 27, 2004
21,903
46
48
Punggol, Singapore
www.foto-u.com
#10
if your D80 is set at jpg large fine, pixel size is 3872 x 2592, by printing at 300dpi, your image can print up to 12.9" by 8.6", slightly better bigger than S8R, you can print up to 10" by 15" straight out from your camera also (@ 250dpi, the lowest lab requirement).

if you intend to print any size smaller than this and do not need to re crop the images or any touch up, color correction etc, you can just sent to image file straight for print.

hope this help.
 

LOTUSfairy

Moderator
Staff member
Oct 10, 2006
3,340
0
36
Serangoon
#11
if your D80 is set at jpg large fine, pixel size is 3872 x 2592, by printing at 300dpi, your image can print up to 12.9" by 8.6", slightly better bigger than S8R, you can print up to 10" by 15" straight out from your camera also (@ 250dpi, the lowest lab requirement).

if you intend to print any size smaller than this and do not need to re crop the images or any touch up, color correction etc, you can just sent to image file straight for print.

hope this help.
thank you.. :) will keep in mind. :heart:
 

Status
Not open for further replies.
Top Bottom