|Posted: Sun Dec 13, 2020 9:34 pm Post subject:
|Based on the text and link provided by Visualopsins:
Maybe the AOCo "Just in Time" production method was reinforced by law of "They Won't Notice." If it was a numbers game back then, well the consumer is not going to complain about a faster better lens. The reseller is not compelled to complain either, because they received the model ordered as labeled.[/quote]
Makes sense! It just seems to me that the physical dimensions of the two optical units would be different and could not be interchanged (as evidenced by the deep set front element of the 55mm), but who knows, there is no machine drawing to check.
All the best,
Canon 5D Mii, Canon 40D, Canon 350D IR, Sony A7 Mii, Sony Alpha-6000, a ton of lenses: AF & MF and too many cameras to count, all formats: 110 - 4x5.