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2023-10-12

Lenses without cemented elements (2023)

There are lenses where there are no cemented (grouped) elements, i.e. the number of elements is equal to the number of groups.

Some people believe that such lenses produce a more interesting image. I don't think so, but from a practical point of view, the lack of cemented elements makes it impossible to de-cement. And there will be no haze between the cemented groups. This is important for (very) old lenses.

I have such lenses:




Revue 24mm f/4 (M42x1): 7 elements in 7 groups




Holga 29mm f/8 (NX): 1 element in 1 group

<probably meniscus lens>

Samsung NX 30mm f/2 (NX): 5 elements in 5 groups




Pentax K 30mm f/2.8 (K): 7 elements in 7 groups




Pentacon 30mm f/3.5 (M42x1): 5 elements in 5 groups







(optical design like this)

Victar 50mm f/2.9 (M40x1): 3 elements in 3 groups


(optical design like this)

Riconar/Rikenon 55mm f/2.2 (K): 4 elements in 4 groups

<unknown optical design>


Vivitar 85mm f/1.8 (F): 6 elements in 6 groups

(Information about 10 elements in 7 groups is incorrect)

Mitakon 85mm f/2 (F) : 6 elements in 6 groups




Pentax M 135mm f/3.5 (K) - 5 elements in 5 groups





I used to have such lenses:

Brightin Star 23mm f/5.6 (FE): 5 elements in 5 groups




Five Star 500mm f/8 (T/K): probably 4 elements in 4 groups (or 4 elements in 3 groups - I am not sure).



I wanted to buy such lenses (but I didn't get them, I have too many 50mm lenses):

Pentax M/A 50mm f/2 (K): 5 elements in 5 groups




Prakticar 50mm f/2.4 (Praktica B): 4 elements in 4 groups







See also related notes:
Posted by malykh в 00:10

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