ANSWERS: 3
  • If the artist were proficient with both programs, and unless the artwork contains actual photos, you couldn't tell.
  • You can get a sense of which images were created with which programs, but I think it would be impossible to be 100% certain. Typically, designs and logos created with Illustrator tend to be in solid colors or extremely smooth gradients, and use very defined, bold shapes (no continuous-tone fading). Logos normally are not created using bitmap software like Photoshop, unless they involve elements of photographs or raster artwork. Nowadays, the two programs have so much in common, that it is completely as feasible to create vector artwork using Photoshop as it is with Illustrator. Photoshop has incorporated a huge amount of vector-based path tools into the software, just as Illustrator has incorporated a similar amount of tools for inclusion of bitmap data.
  • I can place photos in Illustrator to use along with the vector objects that I draw and then export the final graphic as a bitmap. And I can open an Illustrator file in PhotoShop and use effects on it. What you see on the web is bitmapped, but if I drew it, it probably started in Illustrator or InDesign. The curiosity is killing me - Why do you want to be able to know the what the original progam used was?

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