6' parabolic umbrella vs 7' parabolic umbrella.

Does anyone have a photo of a 6' parabolic umbrella next to a 7' parabolic umbrella to show the difference in size? Can a 6' parabolic do pretty much just as well as a 7 foot?

Thanks.

Assuming they are built identically, I would say they are reasonably identical for most all uses. The 7" would need a bit more power to do the same as the 6". The surface area is greater for the flash to push those photons.

It's the desired image and your vision that matters. You can achieve a lot with what you've got.