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J40ADF

J40ADF

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Name
Andy
Edit My Images
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Ive been asked to re submit a picture that I put forward for a exhibition. I needed to submit it resized to 30x40 cm. They have also asked for high resolution. I think I have set this to 32000 pixels per inch but have been asked for it in a higher resolution. I think this is the highest I can set in Ulead Photoimpact 11 for the image I have. I don't think I can post the image on here in it's current resolution and the file size would be too big.
32000 pixels per inch sounds quite high to me but this is the first time I have really played around with image size and resolution.
 
3251200 (40 cm *2.54 cm * 32000 pixels )pixels on the 40 cm side!!!!!
And 2438400 (30 cm *2.54 cm * 32000 pixels) pixels on the 30 cm side!!!!!

This means that the image is 7,927,726,080,000 (3251200 * 2438400) which is 7 trillion pixels! See how ludicrous that is?
 
I would have thought that for normal printing 240 or 300 dpi would have been enough

what file size does your camera normally produce when viewed in your image editor. What can happen is that your image program sets the default resolution to 72 or 96 dpi, which is monitor resolution. Try setting the dpi to 300 and then set the size you want to print to. As a guide this should be around 47Mb.

The phrase "high resolution" is so vague it's almost meaningless. However most magazines will request images sized to 300 dpi. Also many picture agencies ask for 50Mb files I would guess that 300 dpi sized to 30 x 40 should keep them happy.
 
Just checked , the Fuji is a 6 Mp camera so I assume the file size will be about 18Mb, you'll need to upsize but your software will handle that. Tip Don't over sharpen
 
:agree: chappers, you really are a helpful chap. you deserve a medal. :clap:
 
Cheers guys, I will have another bash tonight but they already have a copy 30x40 32000 pixels/inch.
They are Italian and trying to E-Mail me in English. We may be loosing a little in translation too.
 
The printing machines only go up to about 300dpi so anything more is pointless
 
ThisPhotoGuy said:
3251200 (40 cm *2.54 cm * 32000 pixels )pixels on the 40 cm side!!!!!
And 2438400 (30 cm *2.54 cm * 32000 pixels) pixels on the 30 cm side!!!!!

This means that the image is 7,927,726,080,000 (3251200 * 2438400) which is 7 trillion pixels! See how ludicrous that is?
Click to expand...
It's not quite as ludicrous as that, because your arithmetic is wrong.

1"=2.54cm, not the other way round.

The correct calculation would be:
40 cm = 15.75" = 504,000 pixels approx
30 cm = 11.81" = 378,000 pixels approx

So the image would have roughly 190 billion pixels, which is still ludicrous to be sure.
 
J40ADF said:
Cheers guys, I will have another bash tonight but they already have a copy 30x40 32000 pixels/inch.
They are Italian and trying to E-Mail me in English. We may be loosing a little in translation too.
Click to expand...
You're certainly losing something in translation, because there is no way they already have a copy 30x40 32000 pixels/inch. As explained above, that would be 190 billion pixels.
 
I think we are back into that conversation between pixel size at capture and resolution size for printing, which are not the same thing but are far too complicated for me to explain. There was a long thread about this some time ago. I will try to find it. :)
 
A simple question will provide the best answer...

What is the pixel resolution of image file you sent to them? How many pixels wide and how many high?
 
OMG, I'm really confused now.
When I get home I will try to find some time to look at the image and let you all know.
I resized the image to 30x40cm and then set the resolution to the highest it would go (32000 pixels/inch)
I will take a screen shot and post it.
I'm not sure I'm doing this right now.
 
J40ADF said:
OMG, I'm really confused now.
When I get home I will try to find some time to look at the image and let you all know.
I resized the image to 30x40cm and then set the resolution to the highest it would go (32000 pixels/inch)
I will take a screen shot and post it.
I'm not sure I'm doing this right now.
Click to expand...
I'm sure you're not doing this right now.

The primary consideration is always how many pixels do you have? And then, how many do you need?

If I understand things correctly, the Fuji S7000 has a 6 megapixel sensor but can output images of up to 12 megapixels - 4048 x 3040 pixels. Assuming that's what you've done, your original picture has (roundly) 4000x3000 pixels. So at 100ppi it will print at 40"x30"; at 200ppi it will print at 20"x15"; and so oon.

Your target size is 40x30cm, which is 15.748"x11.811". If the requirement is to print at 300ppi then you'll need 4724x3543 pixels - not much more than you already have. If the requirement is to print at 240ppi then you'll need 3780x2835 pixles - and you've already got more than that.

So, assuming you have a 12-megapixel original, you can print at 40x30cm without resizing if the printer works at 240ppi, and you'll only need to resize by a modest amount (about +20% in each direction) if the printer works at 300ppi.

So how are we doing? How many pixels do you have, and how many do you need?

PS Always, always, always think in terms of pixels. You can specify a ppi value in the image file, but most printers ignore it.
 
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