Resizing Image

[bt351s]

Hi... I've enlarged an image in Photoshop and changed dpi to 300. I've used "Preserve Details Enlargement" as well as "Preserve Proportions" by having the link on next to height/width.

The image looks great on the screen but very pixilated in "Image Size" preview...

I'm not sure if it will be fine for print on a t shirt? Why is it not good in preview box but great in Photoshop file?

Cheers so much.... 

[bt351s]

Oh "Ctrl Y" makes it 100%... It's as blurry as and pixilated 😞 It doesn't matter what videos I watch telling me how to resize images it doesn't work! 

[Stephen Marsh]

@bt351s 

What pixel width/depth was the original image?

What pixel width/depth is the enlarged image?

What physical print size (CM or Inches) do you need at 300 PPI (pixels per inch, not DPI dots per inch).

Are you printing direct to garment (inkjet), inkjet sublimation or traditional silk screen printing? You may not require 300 PPI, it depends on image content and output.

[bt351s]

Hi Stephen.... 1024 H x  841 W  72 dpi was the original

I've made it 5400 H x 4800 W 300 dpi

Yes for print on demand on a t shirt and it's DTG

(It's a public domain drawing that I'll add text etc to)

Thanks so much for getting back to me... I'm a baby with Photoshop and it's showing haha!

[bt351s]

18 x 16 inches it converts to at 300dpi

[bt351s]

Dpi and Ppi would be the same size  but dpi is for print and ppi for on screen normally

[Stephen Marsh]

Dpi and Ppi would be the same size  but dpi is for print and ppi for on screen normally

By @bt351s

It doesn't matter if the output is for device/monitor or print, when working in Photoshop it's all about pixels, not dots.

[Stephen Marsh]

So why do you believe that you require 300 ppi at 18 x 16" in size?

Did the print service provider specify this, or did you just read somewhere that "300 ppi is for print"?

[bt351s]

Yes on the print provider it says 300

The dimensions vary a little but around 4800 x 5400  is standard for t shirts on there. That's the whole print area so the graphic could be a bit smaller but it's better to go larger and reduce the size with the bounding box in the editing stage...

I'm used to Illustrator and vectors but using more detailed graphics raster holds he details way better

[bt351s]

Sorry I didn't see your comment "It doesn't matter if the output is for device/monitor or print, when working in Photoshop it's all about pixels, not dots."

So if I save as 5400 x 4800 it doesnt matter about the resolution aka 72, 150, 300 dpi or ppi?

Thanks so much

[Stephen Marsh]

Sorry I didn't see your comment "It doesn't matter if the output is for device/monitor or print, when working in Photoshop it's all about pixels, not dots."

So if I save as 5400 x 4800 it doesnt matter about the resolution aka 72, 150, 300 dpi or ppi?

Thanks so much

By @bt351s

That's not what I was saying:

Photoshop is a pixel editor, when talking about resolution in Photoshop it's PPI, not DPI. DPI is for print devices, not images in Photoshop. But that is a semantic distraction at this point!

Back to Photoshop and pixels... 5400x4800px @ 72 PPI is the same number of pixels as 5400x4800px @ 300 PPI – however, they will print at different physical print sizes based on the PPI value (75x65" vs 18x16").

[bt351s]

Cheers so much Stephen.... That's given me some more clarity to work in Photoshop 🙂

[Stephen Marsh]

Yes on the print provider it says 300

OK, I wonder if the fabric weave will actually hold 300 PPI of detail...

Contone image content may need lesser PPI. Text may need higher, but again, you are limited by the fabric and the output resolution of the printer.

DTG is not my speciality.

---

I'm used to Illustrator and vectors but using more detailed graphics raster holds he details way better

---

But you don't have more detailed rasters, you have a low-resolution original at unknown quality at 1024 x 841 PX.

[D Fosse]

OK, I wonder if the fabric weave will actually hold 300 PPI of detail...

By @Stephen Marsh

That's extremely doubtful. The cotton weave itself is probably well below 100 threads per inch.

The plain fact is that "300 ppi for print" is blindly repeated by so many people just because they read it somewhere - but without having any understanding of what it means. In this case I think you can safely ignore that, and ask someone who will actually operate the printing process.

Over 5000 pixels for a T shirt print is completely unrealistic.

[bt351s]

Oh ok.... It was on the print providers website too but I'll get hold of them and ask some questions about what to upload....  

What do you do? Online graphic design? 🙂

[bt351s]

Maybe that's why they want the highest resolution as there's room for variance and slight loss on the print?

Hmmm I do... I think I'll fiddle with it and order  a sample t shirt or two... What can go wrong haha!! 🙂

[Stephen Marsh]

Hi... I've enlarged an image in Photoshop and changed dpi to 300. I've used "Preserve Details Enlargement" as well as "Preserve Proportions" by having the link on next to height/width.

The image looks great on the screen but very pixilated in "Image Size" preview...

By @bt351s

Evaluate the image at 50% or 25% view rather than pixel peeping at 100% (1:1) or higher.

Take a look at the following topic, including the suggestions from Conrad in the following post:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/upsampling-an-image-without-changing-...

[bt351s]

Thanks heaps for the link 🙂