Blow Up Slides Can You Get Blown Up Photos Made From Slides?

Can you get blown up photos made from slides? - blow up slides

Yes you can, no problem. A good photo lab should be able to.
If the ramp is large enough to step up, are no problem. Poster size should be no problem. If the image for a larger anyway great distance and need not deep into the details, a 4x6, in which you look closely to print.