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[OM] Zuiko 35-70 f/???

Subject: [OM] Zuiko 35-70 f/???
From: Miguel&David <mirko@xxxxxxxxxx>
Date: Fri, 17 Apr 1998 16:11:48 +0200
Hi,
    I would like to know which Zuiko is the best with this focal lenght:

Zuiko 35-70/3.5-4.5
Zuiko 35-70/3.6
Zuiko 35-70/4.0
Zuiko 35-70/4.0 AF
    I think everybody will go for the "35-70/3.6". I have read that is
superb rivalling the very best fixed focal lenght lenses in sharpness,
color and contrast!!!
    But if you look at MP tests, you can see that 35-70/3.6 isn´t 
too much contrasty. But if you have a look at the bottom with MP test
from Zuiko 35-70/3.5-4.5, you can see "at first" a more powerful lens.

1.)I work with a 50mm/f1.2 and I would like to know if 70mm at 4.5 is
ok for portrait and if the background is going to be more out of focus
than with 50mm at f1.2
The resolution, can be compared to Zuiko 50mm/f1.2???
2.)I don´t know if this type of lens can be AF, because I will use it
with my OM4Ti, and I can´t use AF with OM manual focus cameras, can
you??? 
======================================================================
35-70/3.6 MC (MP 1/80 p. 119): 
35: Actual: 36.26/3.63, Distortion: 1.34% barrel, Falloff: 0.75 stops 
at f/5.6
70: Actual: 68.57/3.66, Distortion: 1.78% barrel, Falloff: 0.5 stops 
at f/5.6
        
        3.6     5.6     8       11      16      22

Resolution (lines/mm) at 35mm at 1:48x
Center: Ex 54   Ex 60   Ex 68   Ex 68   Ex 60   VG 48   
Corner: Ex 34   Ex 43   Ex 48   Ex 48   Ex 43   VG 38

Contrast (%) at 35mm at 30 lines/mm
Center: Hi 50   Hi 52   Med 52  Med 49  Low 45  VL 39
Corner: Med 24  Med 32  Med 41  Med 41  Med 38  Low 30

Resolution (lines/mm) at 50mm at 1:48x
Center: Ex 60   Ex 68   Ex 68   Ex 68   Ex 60   VG 48
Corner: Ex 34   Ex 43   Ex 43   Ex 48   Ex 43   VG 38

Contrast (%) at 50mm at 30 lines/mm
Center: Med 49  Med 51  Med 53  Med 53  Low 45  VL 39
Corner: Low 20  Low 22  Low 29  Low 29  Low 27  VL 23

Resolution (lines/mm) at 70mm at 1:52x
Center: Ex 66   Ex 66   Ex 73   Ex 73   Ex 58   Ex 52
Corner: Ex 41   Ex 46   Ex 46   Ex 41   VG 37   Ex 41

Contrast (%) at 70mm at 30 lines/mm
Center: Med 42  Med 49  Med 52  Med 52  Low 46  VL 40
Corner: Low 17  Low 18  Low 29  Low 30  Low 27  VL 22
======================================================================

35-70/3.5-4.5 (6/86 pp. 59,70):
35: Actual: 36.45/3.34, Distortion: 0.45% Barrel, Falloff: ????
70: Actual: 67.88/4.69, Distortion: 0.96% Pincushion

        3.5     5.6     8       11      16      22

Resolution (lines/mm) at 35mm at 1:50x
Center: Ex 56   Ex 63   Ex 63   Ex 56   Ex 56   Ex 50
Corner: Ex 50   Ex 56   Ex 56   Ex 50   Ex 50   Ex 45

Contrast(%) at 35mm at 30 lines/mm
Center: Hi 45   Hi 58   Hi 65   Hi 60   Hi 56   Hi 44
Corner: Hi 35   Hi 47   Hi 56   Hi 52   Hi 44   Med 33

        4       5.6     8       11      16      22

Resolution (lines/mm) at 50mm at 1:50x
Center: Ex 56   Ex 56   Ex 63   Ex 63   Ex 56   VG 50
Corner: Ex 50   Ex 50   Ex 56   Ex 56   Ex 50   Ex 45

Contrast(%) at 50mm at 30 lines/mm
Center: Hi 46   Hi 60   Hi 66   Hi 61   Hi 57   Med 44
Corner: Hi 36   Hi 49   Hi 55   Hi 50   Hi 45   Med 34

        4.5     5.6     8       11      16      22

Resolution (lines/mm) at 70mm at 1:50
Center: Ex 57   Ex 57   Ex 64   Ex 64   Ex 57   VG 51
Corner: Ex 51   Ex 51   Ex 57   Ex 57   Ex 50   Ex 45

Contrast(%) at 70mm at 30 lines/mm
Center: Hi 47   Hi 62   Hi 67   Hi 62   Hi 56   Hi 44
Corner: Hi 37   Hi 50   Hi 57   Hi 51   Hi 45   Hi 36


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