contax 645 140mm - any good at f4?

[narikin]

anyone got experience of this lens at f4 - one stop down - does it still deliver quality so wide?

my 80mm is poor till its 2 stops down, so I wonder if the 140 is the same.

wanted to check before I invest in one,

thanks.

[william]

I shoot portraits with this lens all the time at around f4-5.6 and have no complaints at all.  Granted, I'm not hyper-critical, and I'm talking about portraits as opposed to landscapes, macro, or other work where there's a lot of micro detail.

anyone got experience of this lens at f4 - one stop down - does it still deliver quality so wide?

my 80mm is poor till its 2 stops down, so I wonder if the 140 is the same.

wanted to check before I invest in one,

thanks.
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[Khun_K]

I shoot portraits with this lens all the time at around f4-5.6 and have no complaints at all.  Granted, I'm not hyper-critical, and I'm talking about portraits as opposed to landscapes, macro, or other work where there's a lot of micro detail.
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I do not use stops at wide open or close to it often but I must say for those time I needed those f stops, they were quite good. The sharpness to the medium format level is very critical and subject to the lighting so I am not too sure if that was the reason but the 80mm is among the very best I have use as well as the 140mm, with Contax 645+P45.  The 80mm when wide open is indeed very good at the center but of course it has some trade off at corners for its speed but I am found it a very useful lens.

[benedmonson]

narikin,
I'm on location for several days and away from my HD's for examples. I shoot the 140mm Contax all the time at F2.8 & F4 with wonderful results, I love this lens. As for the 80mm Contax lens, it is my absolute goto lens everyday, I'm attaching a shot with the P30 at 200iso 1/125th F2.8. I think that the 80mm Contax lens is extremely sharp near wide open, but is very hard to focus perfectly.
Hope this helps.

Cheers,

anyone got experience of this lens at f4 - one stop down - does it still deliver quality so wide?

my 80mm is poor till its 2 stops down, so I wonder if the 140 is the same.

wanted to check before I invest in one,

thanks.
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