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DPChallenge Forums >> Tips, Tricks, and Q&A >> Does The Have Aspect Ratio Have To Be Exact?
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07/24/2003 05:21:56 PM · #26
Originally posted by Calvus:

That is confusing?

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


That is true, however no amount of resizing will add detail where none was recorded. The problem is that excessive resizing will degrade the quality of the existing detail. In all, it's best to frame your shot in-camera so that you have to do as little cropping as possible, then do the least resizing necessary to reach your target print size.

-Terry
07/24/2003 05:24:18 PM · #27
The problems I had were not really image quality.

2 out of the 5 I submitted were ok, up to 8x10 and questionable at 16x20 (Yellow)

the other 3 had the following.

1. Dust/Scratches (Noise) I fixed that one
2. The other 2 had text in the border that was to large. I reduced the text down.

The only question that got me was at what point do they reject the aspect ratio?

I had one at 1.008:1, I had another at 1.2498:1

Is there any cushion to this?

There has to be a plug-in or another program out there I would think that would take out all the guess work. And not have to spend $600.00 to do it.

Thanks for all the help and helpful conversation :)

I think I missed the 5:00pm eastern time for approval so I will wait until tomorrow to plac emy order now :)


Calvus

07/24/2003 05:27:02 PM · #28
I try to frame as you say all the time, but have you tried to frame with a Digital Camera LCD panel outdoors? And the view finder is off by who knows how much?

God I need to get my new Canon E10D SLR!



Calvus

Originally posted by ClubJuggle:

Originally posted by Calvus:

That is confusing?

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


That is true, however no amount of resizing will add detail where none was recorded. The problem is that excessive resizing will degrade the quality of the existing detail. In all, it's best to frame your shot in-camera so that you have to do as little cropping as possible, then do the least resizing necessary to reach your target print size.

-Terry

07/24/2003 05:30:58 PM · #29
This Olympus C-3030Z is great for tourist shots and family shots around home. But since trying to get more technical with macros, creative and etc it falls way short of anything I would ever recommend. And not having to crop any more than needed. The off center view finder and low quality lens optics are not much help.


Calvus


07/24/2003 05:32:35 PM · #30
Originally posted by Calvus:

The only question that got me was at what point do they reject the aspect ratio?

I had one at 1.008:1, I had another at 1.2498:1

Is there any cushion to this?
Calvus

It is possible that it must be within 1 pixel, but just adjust the canvas size to a precise aspect ratio.

It is much easier to show than describe. Post the dimensions (in pixels) of your image and what print size you want and I'll try and give you a specific answer.
07/24/2003 05:37:50 PM · #31
Originally posted by GeneralE:

Originally posted by Calvus:

The only question that got me was at what point do they reject the aspect ratio?

I had one at 1.008:1, I had another at 1.2498:1

Is there any cushion to this?
Calvus

It is possible that it must be within 1 pixel, but just adjust the canvas size to a precise aspect ratio.

It is much easier to show than describe. Post the dimensions (in pixels) of your image and what print size you want and I'll try and give you a specific answer.


I think I've been off by as much as 8 pixels and been ok. I've never been off by more than that so I dont know at what point it rejects. If you're off, it won't even let you submit for approval. I don't know what the threshold is, but it should be enough that your resizing won't cause you to get rejected.

-Terry
07/24/2003 05:46:23 PM · #32
GeneralE

I think with all the help the great members have given me today I have them corrected and resubmitted for approval again. I will just have to wait until tomorrow to see.

I still am curious as to just how much cushion there is in the aspect ratio?

And where do we draw the line on the DPI? I hear one thing in the forum and another in the tutorials?

I use to do all my printing at home on my Canon BJC-6000 using photgraphic ink, Kodak Photographic paper and using Corel PhotoPaint. I hope this will get me to a better plateau so to speak with my photographs and editing abilities.

It is just like college, the text books never covered all of the possible errors or questions that pop up in the actual work :)

Maybe for a few bucks, DPCprints could send out a sampler with some given DPI's to show us what they do? Or is that to much, given all the camera models and etc :)



Calvus


Originally posted by GeneralE:


It is much easier to show than describe. Post the dimensions (in pixels) of your image and what print size you want and I'll try and give you a specific answer.

07/24/2003 05:59:41 PM · #33
The line for DPI is drawn at a 150 minimum before your photo is considered, but it may or may not be accepted, depending on the quality. Clubjuggle put it perfectly ... don't upsize more than you have to.

As for the "cushion" ... I can't help you there, I always assume it has to be exact, that way, there's no surprise after uploading it and finding out that the ratio is not acceptable.

Congrats on getting the prints up ... it always takes a while to figure out the best way to get them right, but after a while it gets second nature and you'll wonder why you ever had problems with it :) I used to work out things in a spreadsheet, these days I have the pixel sizes pretty much memorized, both with and without a frame...
07/24/2003 06:09:41 PM · #34
Originally posted by Calvus:

GeneralE

And where do we draw the line on the DPI? I hear one thing in the forum and another in the tutorials?

Calvus

For DPC Prints, we go by what our print-producer says: minimum 150 dpi at 100% of final print size, or optimally 300 dpi. Higher (file) resolutions will apparently not produce significant improvement.

Please remember that different print processes have different file requirements. DPC Prints are made by a completely different process than anything you will have at home.

Right now I can think of the following ways of "printing" an image, and all of them have different "optimum" characteristics:

Dot-Matrix printer
B+W Laser printer
Color Laser printer
Ink-jet printer (dye-based ink)
Ink-jet printer (pigment-based ink)
Bubble-jet printer
Thermal printer
Dye-sublimation printer
Silkscreen
Rubber stamps
Flexographic plates (asymmetric)
B+W Halftone lithographic film
Color separation lithographic halftone film
Digital color press (e.g. Indigo)
Direct-imaging lithographic press (e.g. Heidelberg DI)
Monitor/web display (desktop)
Monitor/web display (PDA/Phone)

Photographic Laser Printer (Fuji Frontier) --
This is what DPC Prints photos are output on. Your image is exposed, pixel-by-pixel, through color filters to ordinary photographic print paper, which is then processed just as if you brought your negatives in for enlargements. DPC Prints uses, I think, Fuji Crystal Archive paper in both Glossy and Matte finishes at all sizes.

Ritz/Wolf Camera and Costco also use Fuji. Ofoto uses (and is owned by) Kodak, with only glossy in smaller sizes, and matte in the larger.

Think of these as reprints from your digital negative.

Message edited by author 2003-07-24 18:10:53.
07/24/2003 07:01:05 PM · #35
GeneralE

I'am impressed with your knowledge and the length you went to to help clarify this matter. You have been more than helpful.

Maybe when this is all done, I will put together a report for myself that has all of the info from the tutorials in one so it is one clean workflow :) It will help when I get my photos from DCPrints so I know what to expect.


Calvus
07/25/2003 12:59:53 PM · #36
Goodtempo

Thanks thats makes a lot of sense.


Calvus

Originally posted by goodtempo:

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.

07/25/2003 04:32:06 PM · #37
Originally posted by Calvus:

GeneralE

I'am impressed with your knowledge and the length you went to to help clarify this matter. You have been more than helpful.

Maybe when this is all done, I will put together a report for myself that has all of the info from the tutorials in one so it is one clean workflow :) It will help when I get my photos from DCPrints so I know what to expect.


Calvus

Thanks! I have a hard time explaining math stuff sometimes. I've been working with photos on computer since about 1990 (Photoshop 2.0) so for some things it's hard to remember how confusing this stuff was at first ....
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