I use Leica M lenses for the obvious reasons that they have superb optics, they are very small and light, they are manual focus, they can be used on several camera systems (Leica, Voightlander, Fuji and Sony in my house) they will last a lifetime and your children will be delighted to inherit them. I seem to have acquired 35, 50, 90 and 135 versions, plus the excellent Zeiss 21. The limit is 135mm as that is the longest focal length that it is practically possible to manually focus. It is also the limit in terms of being able to eliminate shake hand-held in medium to poor light. I also have a 180mm R-fit.
The 180 is exclusively for use on a Sony a7r, using focus peaking mostly. The 90 and 135 also work brilliantly on the Sony.
The 21, 35 and 50 are current versions purchased new. I've had the 90 for some years and purchased the 135 last week. I was testing it today. The 90 and 135 are "Tele-" lenses, designating a lens shorter than its focal length. I attach an image to indicate the size, with a normal size camera behind (a Leica Q). The 90mm is all-metal and weighs 225g. Canon make 90mm and 100mm lenses, which both weigh almost 600g.
I attach a few images taken with the 135mm/f4 today at Frieze. The optics are remarkably good.
The 90mm was purchased for £300 on ebay from the son of the original owner who bought it new in 1984 (so 32 years old). I paid £250 to get it recallibrated and cleaned (it was forward focusing).
The 135mm was made in 1966 (so 50 years old) and cost £249 delivered from a dealer.
The 180mm cost £800. It was made in 1991 (so 25 years old), but had just been rebuilt with a new front element, work costing almost £400, so it is like new. It is an apochromatic 'APO' lens (Leica's first ever), so is incredibly sharp and accurate.
These longer lenses are very popular on Sony, hardly surprising compared to the cost of Sony FE lenses. They offer tremendous practicality and value for money in addition to incredible performance.



The 180 is exclusively for use on a Sony a7r, using focus peaking mostly. The 90 and 135 also work brilliantly on the Sony.
The 21, 35 and 50 are current versions purchased new. I've had the 90 for some years and purchased the 135 last week. I was testing it today. The 90 and 135 are "Tele-" lenses, designating a lens shorter than its focal length. I attach an image to indicate the size, with a normal size camera behind (a Leica Q). The 90mm is all-metal and weighs 225g. Canon make 90mm and 100mm lenses, which both weigh almost 600g.
I attach a few images taken with the 135mm/f4 today at Frieze. The optics are remarkably good.
The 90mm was purchased for £300 on ebay from the son of the original owner who bought it new in 1984 (so 32 years old). I paid £250 to get it recallibrated and cleaned (it was forward focusing).
The 135mm was made in 1966 (so 50 years old) and cost £249 delivered from a dealer.
The 180mm cost £800. It was made in 1991 (so 25 years old), but had just been rebuilt with a new front element, work costing almost £400, so it is like new. It is an apochromatic 'APO' lens (Leica's first ever), so is incredibly sharp and accurate.
These longer lenses are very popular on Sony, hardly surprising compared to the cost of Sony FE lenses. They offer tremendous practicality and value for money in addition to incredible performance.



