Large Format Prints

12 years 8 months ago #127620 by eryck
Hello all,

I want to print a few images, I have taken over 20 000 of my first images in the past 20 months. I dont feel I even get out enough with my camera. But its time to get some large format prints for myself and family and friends, so its hard enough going through my library and selecting whats worth the 20-30 bucks for a 16"X20" print.

When I take an original *.CR2 file from my Canon 1000D and put it into photo shop and select Image>Image Size and then adjust to 200 DPI the largest size in inches is approximatly 12X18. The guys at the print shop recomended I save my images as tiff or jpeg with 200 DPI but photoshop tells me the largest size is 12X18. I am wondering how can I make bigger prints, like poster size?
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12 years 8 months ago #127622 by MLKstudios
What you want to do is to give them as many of the original pixels as you have, and let their printing software fill in the missing "bits".

When you "format" (choose height and width) leave the dpi area blank. It will use all the pixels it has.

HTH

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

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12 years 8 months ago #127627 by eryck

MLKstudios wrote: What you want to do is to give them as many of the original pixels as you have, and let their printing software fill in the missing "bits".

When you "format" (choose height and width) leave the dpi area blank. It will use all the pixels it has.

HTH


so then why did the person I talked to on the phone say to modify my image size settings to 200 DPI, ?? what are the chances I can develop a poster size image but at 72 DPI what happens then?
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12 years 8 months ago - 12 years 8 months ago #127628 by MLKstudios
200 or even 150 dpi is fine for large prints. They were just trying to give you a starting point.

Good printers have their own upsizing software, that does the scaling for you. It is better upscaling software than you can buy for your own computer.

They simply don't want to explain it, and giving you a solid number is easier (and quicker) for them. It's less messy.

Also, if you do your own upscaling, it would be YOUR fault if it didn't turn out well, not theirs.

Lawyers.

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

,
12 years 8 months ago #127636 by eryck
thats reasuring 12X18 seems ok so far the largest I printed was an 11X14 at the WalMart print shop (lol) it was from a Hockey game and didnt turn out how I expected so I got my own HP printer that I use once in a while for 8X10 size prints, I have been unsuccessful at B&W with that at first they were turning out fuzzy and green but I upped the sharpness and added some brightness> A photo I took from a night club turned out very well actually.

BUT I want to go big and knowing 200 DPI is a starting point makes a lot of sence, maybe if I want poster size I can expect some loss in the image and should be prepared to componsate. if there is any way of knowing what to expect when going beyond the recomended settings?
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12 years 8 months ago - 12 years 8 months ago #127701 by Henry Peach
I wouldn't mess with image size at all. Just deliver the full res file to the lab, and tell them what print size you want. By the way if it's a 2:3 aspect ratio photo (most DSLRs) the print size would be 16"x24". 16"x20" would be a crop from the full photo.
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12 years 8 months ago - 12 years 8 months ago #127711 by Baydream

eryck wrote: thats reasuring 12X18 seems ok so far the largest I printed was an 11X14 at the WalMart print shop (lol) it was from a Hockey game and didnt turn out how I expected so I got my own HP printer that I use once in a while for 8X10 size prints, I have been unsuccessful at B&W with that at first they were turning out fuzzy and green but I upped the sharpness and added some brightness> A photo I took from a night club turned out very well actually.

BUT I want to go big and knowing 200 DPI is a starting point makes a lot of sence, maybe if I want poster size I can expect some loss in the image and should be prepared to componsate. if there is any way of knowing what to expect when going beyond the recomended settings?

As an experiment, I took a shot from my XT to Costco and had a one-hour 30x40 poster printed. It had remarkable clarity from an 8mp camera and made a wonderful gift to a friend (of her grandchildren).

Not bad for a 3.3mb jpeg. The print cost about $15.

Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork

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12 years 8 months ago #127819 by eryck
thanks guys, Ive decided to go with one print at 12X18 ... to see how it goes at the guideline of 200 DPI then I will consider a poster size. seems the default DPI is 72 so I am guessing that 110 DPI would be a margin not to go under.???
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12 years 8 months ago - 12 years 8 months ago #127836 by MLKstudios
In reality the DPI has little meaning. It's how many pixels wide by how many pixels tall that matters most.

That's why if you leave the DPI blank, it uses ALL it has.

Any upsizing will require software to fill in missing bits. Let the best software (at the print shop) handle it.

Matthew :)

As pointed out, you need to format the image for 8x10, 5x7 or 4x6 etc. You will lose some of the image for different print "formats" not print sizes. An 8x10 and a 16x20 are the same format.

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

,
12 years 8 months ago #128124 by TsB
I have been told that the ideal detail from a pro printer is set for 300-360 pixels per inch when set via Photoshop. Note the pixels per inch varies from dpi. Here is a url that may lend some assistance though a search using "ppi vs dpi" would result in many to choose from.
www.rideau-info.com/photos/mythdpi.html


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12 years 8 months ago #128211 by Henry Peach
Que circus music! :toocrazy: :toocrazy: :toocrazy: :toocrazy: :toocrazy: :toocrazy: :toocrazy:

Trust your lab. If you can't trust your lab, find a new lab.

For instance if you are using Mpix.com they say their RA-4 printing machines can't take advantage of resolution higher than 250 ppi. But since their machines are likely to resize whatever you send in they advise not resizing at all. Let them do it one time rather than you do it once, and then they do it again.

If you are using a lab that can't deal with resizing on their own it's a lousy lab.
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12 years 8 months ago - 12 years 8 months ago #128213 by MLKstudios
^ Exactly!

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

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