dtg printers can print either raster or vector graphics. Most photo realistic pictures are raster graphics. But the raster graphic needs to be the correct size that you want to print and more than 150 dpi to print well.
You said you sent a low res photo to the company. That was your mistake. They would take a vector graphic as the size can be increased without affecting the quality. But you can't do the same with a raster graphic.
Hope that explains things.
Mark
You said you sent a low res photo to the company. That was your mistake. They would take a vector graphic as the size can be increased without affecting the quality. But you can't do the same with a raster graphic.
Hope that explains things.
Mark