[skhr0680]

I know very few 35mm format lenses with NO distortion.

The two I know of with the least distortion are actually primes from the 1980s. Nikon began allowing a small amount of distortion in their new prime designs circa 2010, choosing to correct it with an in-camera profile.

It's not as bad as it sounds. Getting rid of that last bit of distortion may require relatively major tradeoffs in other areas like brightness.

[formerly_proven]

There's a number of lenses which prioritize distortion correction because they don't get to have lens profiles. Though even low distortion wide angle lenses generally retain low levels of high order distortion (i.e. straight lines become slightly wavy across the image, instead of having a large amount of low-order distortion, i.e. being simply bent strongly one way or another), see e.g. Laowa Zero-D lenses.

I do actually think the OEM design approach is better overall. It's a lot easier to near-perfectly correct high amounts of low order distortion than it is to make lines with a slight amount of 6th? 8th? order distortion actually straight. Even if the resulting raw image of the OEM lens looks more like a fisheye than a rectilinear lens.

[tveyben]

Would one og these be the rectilinear 15mm?

Great lens - and a huge front element…

I used that in the 90’ies to make QTVR with a (really expensive) Kodak DCS 460 - 6MP on a DX sized CCD no display and the large 340MB PCMCIA disk ;-)

[nimbleal]

Zeiss cinema lenses (in particular master primes) have the least distortion I’ve come across