05-06-2011, 09:33 PM
[quote name='Vieux loup' timestamp='1304714023' post='8107']
There is a Canon 50mm f1.4, a Vivitar 135mm f2.8 and a Vivitar 200mm f3.5! They used to be good lenses, but I have no idea how good or bad they are with todays standards. The idea would be to buy for example a GF1 with the 17mm AF kit lens and the adaptor ring so that I would have the 50, 135 and 200mm lenses as a "free" set of lenses. What would the conversion rate to 24x36 be on a GF1? Somewhere around 1.7?
[/quote]
The GF1 is a normal 4/3rds camera, and its crop factor compared to 135 format (35mm film) full frame is 2x.
So, the 50mm will act as a 100mm lens, field of view wise. Ands its aperture will be an 1.4 x 2 = f2.8 FF equivalent.
The 135mm a 270mm f5.6 equivalent, and the 200mm a 400mm f7 equivalent.
On a Sony NEX the crop factor is like that of your former D300, 1.5x.
The 50mm f1.4 could be worthwhile still, by todays standards. It is said to be a fine lens. Is the 135mm the macro version? That lens too has a good reputation.
Personally I'd prefer NEX over 4/3rds, even though NEX has a demented user interface, because of the 4x3 format of 4/3rds...
There is a Canon 50mm f1.4, a Vivitar 135mm f2.8 and a Vivitar 200mm f3.5! They used to be good lenses, but I have no idea how good or bad they are with todays standards. The idea would be to buy for example a GF1 with the 17mm AF kit lens and the adaptor ring so that I would have the 50, 135 and 200mm lenses as a "free" set of lenses. What would the conversion rate to 24x36 be on a GF1? Somewhere around 1.7?
[/quote]
The GF1 is a normal 4/3rds camera, and its crop factor compared to 135 format (35mm film) full frame is 2x.
So, the 50mm will act as a 100mm lens, field of view wise. Ands its aperture will be an 1.4 x 2 = f2.8 FF equivalent.
The 135mm a 270mm f5.6 equivalent, and the 200mm a 400mm f7 equivalent.
On a Sony NEX the crop factor is like that of your former D300, 1.5x.
The 50mm f1.4 could be worthwhile still, by todays standards. It is said to be a fine lens. Is the 135mm the macro version? That lens too has a good reputation.
Personally I'd prefer NEX over 4/3rds, even though NEX has a demented user interface, because of the 4x3 format of 4/3rds...