Print Size Question: I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP. 1. Will it produce a reasonable 36x24 print? 24x16 print? (I have...

raymondh Loc: Walker, MI

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

MJPerini

Who is doing the printing? If you are doing it, or the Lab you choose to send it to accepts TIFFs you could print from a 16 bit file which preserves all the color information. JPEG Truncates it to 8 bits. Most consumer print labs want JPEGs. Custom Photographic printers will often want 16b Tiffs for best results.
Again this also depends on content.
The quality of a print is more than just resolution, but resolution is important too. Some content need more resolution to look good.
4974/300 = 16.58 inches, 3316/300=11.05" Depending on content I have seen some prints look good as low as 180
4974/180=27.6 3316/180 =18.4
Things depend on the quality and the content of the file,Printing process used, and what you would consider a 'Good Print'
24x36 Posters are generally 4 color offset prints on cheap paper. If you view it from far away even those can be ok.

CHG_CANON Loc: the Windy City

raymondh wrote:

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

'Dots' have absolution nothing to do with pixel-based images.
Bytes (file size) have absolution nothing to do with printing pixel-based images.

If you want the 'gold standard' of 300 pixels per inch (ppi), the math is quite simple: divide the pixel length and width of the image by 300.

4974/300 = 16.6 inches
3316/300 = 11.1 inches

At 200 ppi, an very acceptable pixel resolution, your math hits 24x16in. Using gigapixel to 'invent' pixels into a larger resolution probably won't look any better than just 'spreading' the existing pixels over a larger canvas.

Already owning gigapixel, you can freely experience with the results. Just upscale the image to the desired pixel resolution. Review the resulting candidate print files at the 1:1 pixel-level, looking at the 300 ppi files vs the edited (original) 4974x3316 image, at the same location(s). Then decide.

bsprague Loc: Lacey, WA, USA

I have 13x19 prints from my Canon Pixma Pro-100 that mathematically should not work. Somewhere between the printing application and the printer driver, they come out worthy of wall hanging. Some come from phones, some come from video frame grabs and some come from "real" cameras. Some are even cropped beyond what math says will work.

terryMc Loc: Arizona's White Mountains

Consider from how far away you will be viewing the image. A larger image will be viewed from a greater distance and needs less resolution to look just as good. I believe billboards are something like 8-15 ppi on average, while an 8x10 will look best a 300 ppi because the average viewing distance is 12-18 inches. I tend to check online at a pro lab to see what pixel resolution they recommend for different sizes. There is usually a maximum and a minimum listed.

jamesl Loc: Pennsylvania

raymondh wrote:

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

---
At normal 300 pixels/inch would give you a maximum print size of 16.5x11 so you probably would not have enough pixels available for the two sizes you asked about.

User ID

Anyone needing answers to simple print size questions should research it independeently. Asking the UHH clown car will verrry reliably produce nearly 100% misinformation.

Print size threads come up periodically, and results are ALWAYS the same old garbage.

terryMc Loc: Arizona's White Mountains

User ID wrote:

Print size threads come up periodically, and results are ALWAYS the same old garbage.

This one certainly is...

User ID

terryMc wrote:

This one certainly is...

Its a classic case of GIGO starting with the opening post being garbage, and then it all goes downhill from there.

DRM Loc: NC

raymondh wrote:

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

Properly enlarged (via gigapixel or even just Photoshop) you can very likely make acceptable prints in the sizes you mention. Print surface may play a role, too. I find canvas more forgiving than metal when making larger prints.

dannac Loc: 60 miles SW of New Orleans

raymondh wrote:

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

Place your 4974x3316 image on 10 x 8 files attached.
Dont resize ... just move to get a view of a particular section.

Print both and they will show what a small section of a 36 x 24 @ 138 and a 24 x 16 @ 207 will look like.

If good enough, place your original 4974 x 3316 on larger files attached and print.

10x8_3624

(Download)

10x8_2416
10x8_2416...

(Download)

36x24@138
36x24@138...

(Download)

24x16@207
24x16@207...

(Download)

Revet Loc: Fairview Park, Ohio

The type of photograph, how far the viewing distance, and what you are printing it on are also important. I had two 20 MP images enlarged to 60 by 60 in. on canvas and they looked fantastic hanging in my office (tiff files used) even at a 3-foot viewing distance. That is way larger than the 12 by 17-inch recommended max. enlargement for a 20 MP image at 300 dpi.

dpullum Loc: Tampa Florida

Reading enlightens us to what we can or can not see in photography and sharing as a print...
https://www.diax.nl/pages/perception_printquality_uk.html

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

raymondh wrote:

I've cropped a 27mb raw (5760x3840) to a 12mb jpg (4974x3316) at 300 dpi using Canon's DPP.
1. Will it produce a reasonable 36x24 print? 24x16 print? (I have gigapixel)
2. Is there a difference between a large size print versus a poster?

If you have photoshop, when you work the image it will give you a size in the lower left hand corner. Just divide by 300 and you get the max size for 300 dpi.
Example, a 5760X8640 should yield a 19X28 print at 300dpi.

User ID

billnikon wrote:

If you have photoshop, when you work the image it will give you a size in the lower left hand corner. Just divide by 300 and you get the max size for 300 dpi.
Example, a 5760X8640 should yield a 19X28 print at 300dpi.

Clearly, all that numeric gobbledegook is BS.