Comparing the Optics of the Contemporary Giant 85mm Lenses

1. Pentax DFA 85/1.4: 12 elements in 10 groups, 1255g (without hood), 82mm filter thread

2. Canon RF 85/1.2: 12 elements in 10 groups, 1195g, 82mm thread

3. Sigma Art 85/1.4: 14 elements in 12 groups, 1130g, 86mm thread

4. Zeiss Otus 85/1..4: 11 elements in 9 groups, 1200g, 86mm thread 

Well, whilst the new Pentax is similar to the Zeiss in design (but with one additional element), it wins in weight amongst the four, which is actually the heaviest 85mm prime ever made on Earth. Good! ;-P