Does The Have Aspect Ratio Have To Be Exact?

07/24/2003 01:52:24 PM · #1

I keep trying to crop my images by entering the dimensions I want, i.e. 9.5in w x 7.5in h.
But when I do the file new and then go to enter the dimensions I want again on the new file it is always off by a very small amount and then calculates out to be 1.26:1 or even 1.008:1
How close does this aspect ratio have to be.
Can not get it more accurate?

I am trying to follow the tutorial on creating a print image here on DPC.

1. I load the copy of the original to work.
2. I adjust color, level and etc.
(Do not do USM until after the crop and any resampling correct?)
3. I select the Marquee tool.
4. Set to fixed aspect ratio.
5. Enter my selected sizes. 9.5in w x 7.5in h. or etc.
6. Adjust the marquee the way I want it.
7. Edit copy.
8. File new name it, take defaults.
9. Edit paste copy into new file.
(At this point the image size is 22.667in x 17.903in, 72 dpi)
10. Edit image size to size for printing. 9.5in w x 7.5in h.
Enter 9.5in w x 7.5in h., turn off the Bicubic sampling
11. the new size when I enter 9.5in w comes out 7.503in h and 171.789DPI? Or 1632px w x 1289px h.

Do the math 1632 / 1289 = 1.2660977?

How do I get 1.25 or whatever the aspect ratio is with out playing all the mind games?

Do I simply fudge it within the canvas size?

What id I do not want a border? I do I get the image to be exact?

Does all this boil down to I need to buy my Canon E10d to get better image quality for printing?

Calvus

Message edited by author 2003-07-24 14:20:45.

goodtempo

Canon EOS-450D Rebel XSi

Canon EF 50mm f/1.8 II

07/24/2003 02:27:14 PM · #2

9.5in x 7.5in is not a 1.25 ratio.

You either need to make it 9.375in x 7.5in, or 9.5in x 7.6in, or even 8in x 10in for it to be a 1.25 ratio.

You can't take an 8in x 10in and cut a 1/2 inch (or a 1/4 inch) off each side and still have a 1.25 ratio. For the same reason, you can't add an inch to an 8in x 10in image, making it 9in x 11in and expect it to be the same ratio. It becomes 1.22...

You have to add or subtract the same percentage to or from each side. For example, take 6.5% off an 8in x 10in: multiply both sides by .935 (or 93.5%) 8in x .935 = 7.48in, and 10in x .935 = 9.35in. To verify the ratio: 9.35/7.48 = 1.25.

Hope this helps.

Message edited by author 2003-07-24 14:27:50.

Canon EF-S 18-55mm f/3.5-5.6 IS

07/24/2003 02:34:52 PM · #3

I was allowing for a border when I use the 9.5 x 7.5 as recommemded by a member here in the forum.

But the final crop never seems to come out exact to begin with?

How do you correct a borderless image to get the exact aspect ratio?

Calvus

Konador

Canon EOS-500D Rebel T1i

07/24/2003 02:36:31 PM · #4

If you increase the canvas size to 10x8 you'll have the right aspect ratio, and have a border which is the size of standard matting overlaps for 8x10, so your photo will be displayed in full.

Canon EF-S 18-55mm f/3.5-5.6 IS

07/24/2003 02:52:34 PM · #5

I have one now that is 8.001in w x 10.00" h.

or 1536px x 1229 px = 1.2497965 aspect ratio!

Will that be accepted? I feel it won't :)

I tried to trim the canvas by the .001 and it does not seem to work?

Calvus

Konador

Canon EOS-500D Rebel T1i

07/24/2003 02:55:24 PM · #6

It should work, i've had prints that were not exactly correct, and the were accepted. Just try it and see :)

Jacko

Canon EOS-20D

Canon EF 17-40mm f/4.0L USM

07/24/2003 02:59:21 PM · #7

The ratio doesn't have to be exact in my experience. The best way to find out is to try to submit it. I think an error message will pop up if it doesn't match any of the DPCPrints aspect ratios.

Good luck.

07/24/2003 03:00:52 PM · #8

Originally posted by Calvus:

If you allow for the border in your sizing, you need to add a border. If you do not intend to add a border, do not allow for it in your initial crop; just crop to an 8x10 ratio.

07/24/2003 03:02:13 PM · #9

Originally posted by Calvus:

Your print will be accepted if your ratio is off by a few pixels.

As Jacko mentioned, simply upload the print. If it is close enough you will be allowed to submit it for approval; if not, you won't.

-Terry

07/24/2003 03:03:29 PM · #10

I did on this one and this is what I got?

07/24/2003 02:52:34 PM
I have one now that is 8.001in w x 10.00" h.

or 1536px x 1229 px = 1.2497965 aspect ratio!

Will that be accepted?

Maybe I'am making to much of this? I will submit it and see what they say.

I'am trying to get a birthday gift ordered :)

I can't thank you guys enough for the help.

I will let you know what happens :)

Calvus

Originally posted by ClubJuggle
Calvus[/quote:

If you allow for the border in your sizing, you need to add a border. If you do not intend to add a border, do not allow for it in your initial crop; just crop to an 8x10 ratio.

Message edited by author 2003-07-24 15:06:31.

07/24/2003 03:10:21 PM · #11

Originally posted by Calvus:

Maybe I'am making to much of this? I will submit it and see what they say.

I'am trying to get a birthday gift ordered :)

I can't thank you guys enough for the help.

I will let you know what happens :)

Calvus

Hold the phone.

If you are submitting an image for your OWN printing, you do not have to go through the approval process at all. Simply upload your printable file, go to your Order My Prints page on DPC Prints, and order your print.

It is only if you plan to offer your prints for sale that you need to submit for approval.

-Terry

07/24/2003 03:15:45 PM · #12

Yes, but they said I should improve the quality.

I thought I may have messed up on the steps someplace. So I'am redoing it. I want the quality to be good for my wife :)

When I resampled the image to get the DPI over 200 the size automatically went to 8x10. I do not plan on trying to understand why but what the hey :)

Calvus

07/24/2003 03:49:33 PM · #13

Originally posted by Calvus:

Don't worry about the DPI as stated in Photoshop. To determine the size in pixels your image must be, take the largest size you want to sell and multiply by 150. For example, an 8x10 would need to be 8 times 150 (1200 pixels) on one side and 10 times 150 (1500 pixels) on the other. Similarly, a 16x20 would need to be at least 2400x3000 pixels.

If you do not need to upsample to get to your target size, great! Just upload and you're done. If you need to upsample, you should not upsample beyond the minimum necessary to get approved (150 pixels per inch).

You can still submit for approval if some sizes are listed in red. In that case, you will be considered only for the sizes that are in yellow or green.

Again, if you are uploading ONLY for your own use, you do not need to worry about any of this. Just skip the approval process entirely.

-Terry

07/24/2003 04:12:30 PM · #14

I think one bad part is I have 6 or 7 tutorials all printed out in front of me and I am flipping from page to page within the tutorials.

I need to combine this info into one workflow printout.

My Olympus C-3030Z only provides 2048x1536 image at 72 dpi.

When I crop and edit to 8x10 I get about 150-200+ DPI. So I try to resample above 200 and really try to get 300dpi. At the 5% increments.

Then it says for 16x20 it is a little short of quality. So if I ever want to get 16x20 from this camera, I guess I have to resample the entire original? Or is it out of the question?

What is the limit for my C-3030Z and the 2048x1536?

Calvus

07/24/2003 04:15:21 PM · #15

What time do they quit approving the photographs for DPCprints?

Is it 5:00pm eastern time?

Calvus

Message edited by author 2003-07-24 16:27:15.

07/24/2003 04:25:49 PM · #16

Originally posted by Calvus:

If you sample too much, you will introduce pixellation to your image. This is probably why you are getting the reply you are getting.

You can still PRINT 16x20 for yourself, just cannot SELL 16x20.

With my previous camera I got 2560x1920 out of camera. For most images I could enlarge to 3000x2400 without a problem. In your case, though, you will most likely run into problems resizing that far, and may be better served to target 8x10 as your maximum size.

As to your other question, there is no specific time when photograph approvals are done, but I don't ever remember having to wait more than a day for one.

One final question: Are you planning to sell this print, or just print it for yourself?

-Terry

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

07/24/2003 04:30:27 PM · #17

Right now they are for myself.

But I do want to know what I need to do to get them at the quality to sell.

Right now I am going to order copies of what I have uploaded to see how DPCprints does and get a birthday gift :)

If I 'am going to check out DPcprints I want them to approve them before I judge them on their quality of work. I want to see what comments come back if any.

Calvus

Message edited by author 2003-07-24 16:34:54.

GeneralE

Canon PowerShot S3 IS

07/24/2003 04:46:42 PM · #18

How about starting with the following two DPC Tutorials:

A Quick Visual Guide To Resampling

Creating Printable Images

Your ideal resolution for DPC Prints is 300 ppi at the final print size. Figure out the size print you want and multiply by 300; that's how many pixels you need. If your crop doesn't match the apect ratio, fill it out with trimmable padding.

07/24/2003 04:52:32 PM · #19

I have them printed out and I am using them now :)

I have 6 or 7 tutorials printed and I am flipping from page to page as I go through each step. Trying to remember the accepted sizes, procedures and develop and work flow.

The problem is the tutorials (Real nice work) do not go into depth enough for when you run into problems.

Calvus

Message edited by author 2003-07-24 16:53:36.

Tamron SP AF 28-75mm f/2.8 XR Di for Nikon

07/24/2003 04:55:34 PM · #20

Originally posted by GeneralE:

Actually I discussed this with Drew and he said that you should not upsize any more than necessary. That is, if your image is less than 150DPI, you can upsample to 150DPI (but excessive resizing will be rejected), but if you are over 150 you should NOT upsample. Resizing when it is not necessary can actually cause prints to be rejected that would have been approved at a lower resolution.

-Terry

FranziskaLang

Nikon D100

07/24/2003 05:01:49 PM · #21

I know you already got various good tips, so please feel free to ignore mine if they helped ... but here's what I do anyhow.

1. Go to the Print Seller Tips and pick out the ratio and max. image size that you want. Say you want an 8x10 print. According to the table, your minimum dimensions in pixels are 1200x1500.
2. Post-process (hue, levels, clone, etc).
3. If you are cropping, do the cropping now (using the ratio aspect marquee tool allows you to get close to what you need).
4. Resize the image if necessary so that both dimensions meet the minimum (e.g., 1200x1500 in my example). Say it resizes to 1200x1520.
5. Then crop based on pixel size to get the dimensions correct, i.e., to crop the excess 20 pixels of the width.
6. USM and save as a JPG at the highest quality.
7. Upload to DPC Prints.

If I add a border, I do the same thing, I determine what the image size w/out the border needs to be (say I want 100 pixels in each direction), so in this case, I resize the image to 1000x1300, then I widen the canvas using the desired color for the border, so that the final file has the dimensions of 1200x1500.

Good luck :)

Diversq

Canon EOS-10D

07/24/2003 05:09:25 PM · #22

hmmm I see a company brewing...

DCPprintprep.com "You concentrate on the shooting we set it up for sale!â��

Of course the standard 50% of your profit would have to go to us... ;-)

GeneralE

Canon PowerShot S3 IS

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

07/24/2003 05:09:37 PM · #23

Terry --

I DO NOT resample up as a general rule--that's exactly how I got into the habit of bordering my photos.

I crop as desired, set the resolution to 300 (WITHOUT resampling), and from whatever dimension I end up with I enlarge the canvas to the next-largest standard print size.

I have up-sampled a couple of my prints to allow printing 16x20 instead of 8x10, but they were specifically selected for their suitability for that procedure (both were, in fact, approved). But I believe in printing only the largest the camera captures as a general practice.

07/24/2003 05:11:04 PM · #24

That is confusing?

The "Creating Printable Images" tutorial says 200dpi will give fair quaility and that 300dpi would be excellent and desirable?

So when I resampled the image to 3000x2400 300dpi. I thought it would be excellent quality. After noise and sharpening (USM). Because the tutorial said not to upsample more than double the original DPI which I was well under that recomendation?

Calvus