Re: [OM] XA 4 Question: depth of field

[frieder . faig]

Hallo Rainer,

I´ve reactivated a spreadsheet do calculate dof which I fed with the data of 
the XA4.
Here are the results. The colums are seperatedt with TAB as delimiter.
Tehre are always three clums per distance ( Header:  0.3 - m 0.3 => DOF from  ~ 
to)
There is a second row for each f-stop which gies the total size of D.o.F.

Here it is: 
-----------------x------------x--------------------x------x
        Schärfentiefetabelle                                                    
                                                                                
                                        
        Objektiv:       3.5/28                                                  
                                                                                
                                
        Brennweite:     28      mm                                              
                                                                                
                                
        zul. Unschärfekreis u=  0.033   mm              (angepasst an 
orginal-tabelle)                                                                
                                                                          
        Entfernung:             0.3     m       0.3     0.5     m       0.5     
0.7     m       0.7     1       m       1       1.5     m       1.5     3       
m       3       oo              
        Bildfeld: *)            0.31    x       0.21    0.57    x       0.38    
0.83    x       0.55    1.21    x       0.81    1.86    x       1.24    3.78    
x       2.52                    
                        Schärfentiefenbereich :                                 
                                                                                
                                        
        Blende  HY      von.    ....    .bis    von.    ....    .bis    von.    
....    .bis    von.    ....    .bis    von.    ....    .bis    von.    ....    
.bis    von..   .bis    
        3.5     6.79    0.291   ~       0.310   0.47    ~       0.53    0.64    
~       0.77    0.88    ~       1.16    1.24    ~       1.90    2.10    ~       
5.29    6.79    ~oo     
                        0.019   m               0.06    m               0.13    
m               0.28    m               0.66    m               3.19    m       
                        
        4       5.94    0.290   ~       0.311   0.47    ~       0.54    0.63    
~       0.78    0.87    ~       1.18    1.21    ~       1.98    2.02    ~       
5.95    5.94    ~oo     
                        0.022   m               0.07    m               0.15    
m               0.32    m               0.76    m               3.93    m       
                        
        5.6     4.24    0.286   ~       0.316   0.46    ~       0.56    0.61    
~       0.82    0.82    ~       1.28    1.13    ~       2.27    1.79    ~       
9.88    4.24    ~oo     
                        0.031   m               0.10    m               0.21    
m               0.46    m               1.14    m               8.10    m       
                        
        8       2.97    0.280   ~       0.324   0.44    ~       0.58    0.58    
~       0.89    0.77    ~       1.46    1.02    ~       2.92    1.53    ~       
oo      2.97    ~oo     
                        0.044   m               0.14    m               0.31    
m               0.69    m               1.90    m               oo      m       
                        
        11      2.16    0.273   ~       0.334   0.42    ~       0.62    0.55    
~       0.99    0.71    ~       1.77    0.92    ~       4.59    1.30    ~       
oo      2.16    ~oo     
                        0.061   m               0.20    m               0.44    
m               1.06    m               3.67    m               oo      m       
                        
        16      1.48    0.263   ~       0.353   0.39    ~       0.70    0.50    
~       1.23    0.63    ~       2.78    0.78    ~       160.11  1.04    ~       
oo      1.48    ~oo     
                        0.090   m               0.31    m               0.73    
m               2.16    m               159.32  m               oo      m       
                        
        Bem:    *)      Arbeitsblatt berücksichtigt Auszugverlängerung beim 
Näherstellen.                                                                   
                                                                                
            




-----------------x------------x--------------------x------x

Gruß 
Frieder Faig






On Thu, Apr 05, 2001 at 01:37:38PM +0200, Rainer Wagner wrote:
> Hi folks,
> I am the lucky owner of a XA4, got some very nice shots. I dont have a 
> manual, so
> I have no real clue what  DOF I should expect from the various distance 
> settings.
> I only found, that the standard 3m setting seems to be a little close for 
> shots
> with open diaphragm( night shots) , so I got slighlty unsharp pictures at long
> distances. So, what to expect especially from the 1.5 m setting?
> Close focus is quite ok, I got nice shots using the measuring strap.
> 
> Thanks
> rainer
> 
> --
> Dr. Rainer Wagner
> MPI fuer neurologische Forschung
> PET- Labor
> Gleueler Str. 50
> D- 50931 Koeln
> 
> Tel. 49 (0)221 4726224
> Fax  49 (0)221 4726298
> 
> 
> 
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