[HetDraakje]

Based on the specs provided by Leica and the website mentioned:

Differences between the new and competing lenses except for the obvious character of the lens

35mm: Summarit vs. Summicron ASPH
6/4 vs. 7/5 elements/groups;
220 vs. 255 gr;
34 vs. 34.5 mm. length;
51.4 vs. 53 mm diameter;
0.8 vs. 0.7 m. min focus distance;
1250 vs. 2000 euro

50 mm: Summarit vs. Summicron vs. Elmar
6/4 vs. 6/4 vs. 4/3 elements/groups;
230 vs. 240 vs. 170 gr;
33 vs. 43.5 vs. 21.6/37.6 (working position/collapsed) mm. length;
51.5 vs. 53 vs. 52 mm diameter;
0.8 vs. 0.7 vs. 0.7 m. minimal focus distance;
1000 vs. 1350 vs. 850 euro

75 mm: Summarit vs. APO Summicron ASPH
6/4 vs. 7/5 elements/groups;
345 vs. 430 gr;
60.5 vs. 66.8 mm. length;
55 vs. 58 mm diameter;
0.9 vs. 0.7 m. min focus distance;
46E vs 49E filter size
1250 vs. 2300 euro

90mm: Summarit vs. Elmarit vs. Macro Elmar
5/4 vs. 4/4 vs. 4/4 elements/groups;
360 vs. 410 vs. 240 gr;
66.5 vs. 76 vs. 59/41 (working position/collapsed) mm. length;
55 vs. 56.5 vs. 52 mm diameter;
1 vs. 1 vs. 0.77 m. minimal focus distance;
46E vs. 46E vs. 39E filter size
1250 vs. 1700 vs. 1350 euro

Statistics based opinion: It is a lot cheaper (however hoods are not included, except the elmar 50/90. There is not a lot of difference in size. Weight is less (10-20%) but not a lot. There seem to be a redundancy in the 50 mm where the differences are very small. Also the 90mm elmarit seems redundant (faster, lighter and cheaper)

For me, next to my summilux 75, I see also a summarit 75 coming

Boen