06-09-2011, 09:44 AM
[quote name='Klaus' timestamp='1307603275' post='9083']
Pretty nice lens ...
[url="http://www.opticallimits.com/pentax/643-pentax300f4"]http://www.opticallimits.com/pentax/643-pentax300f4[/url]
[/quote]
Seems like a nice lens, but.... one big drawback (if the published data is right):
Its MFD is a nice 1.2m, but only will do 1:5.. this means it has very pronounced breathing. My 70-200mm f4 L also reaches 1:5, at 1.2m.
It performs similar to the Canon 70-300mm f4-5.6 L IS USM in this respect, but that lens is a zoom lens (and a let down in that respect too).
So, for photographers like me, not an ideal lens either (just like that Canon 70-300 L), who would like 300mm at close focus distances, for the narrow field of view.
The Tamron 70-300mm VC and Canon EF 300mm f4 L IS USM perform better in this respect (1:4 at 1.5 meters MFD).
Pretty nice lens ...
[url="http://www.opticallimits.com/pentax/643-pentax300f4"]http://www.opticallimits.com/pentax/643-pentax300f4[/url]
[/quote]
Seems like a nice lens, but.... one big drawback (if the published data is right):
Its MFD is a nice 1.2m, but only will do 1:5.. this means it has very pronounced breathing. My 70-200mm f4 L also reaches 1:5, at 1.2m.
It performs similar to the Canon 70-300mm f4-5.6 L IS USM in this respect, but that lens is a zoom lens (and a let down in that respect too).
So, for photographers like me, not an ideal lens either (just like that Canon 70-300 L), who would like 300mm at close focus distances, for the narrow field of view.
The Tamron 70-300mm VC and Canon EF 300mm f4 L IS USM perform better in this respect (1:4 at 1.5 meters MFD).