Re: [OM] 20 minutes of your life you'll never get back...

Subject: Re: [OM] 20 minutes of your life you'll never get back...
From: Moose <olymoose@xxxxxxxxx>
Date: Sun, 4 Aug 2019 21:24:30 -0700
On 8/4/2019 7:43 PM, Mike Gordon via olympus wrote:
Gorilla Moose writes:
<<My ancient Nikkor-Q 200/4 is much larger and heavier than the OM 200/4, let 
alone the diminutive 200/5, but the Nikkor whuped them both, center and edge, on a 5D.

Have the CV Apo Lanthar 180/4 in OM mount.  Sharp as a tack under most 
circumstances. I would bet it would whup all the above in most situations.  It 
also goes 1:4 natively and performs nicely on extension.  It is new ver Z. 180 
Oly would have made.

Yeah, the Oly has CA problems, as CH reminds us. :-)

   It is quite small.

Aha! I thought I'd compared these before:

                            Cosina Voigtländer
                         SL APO-Lanthar 180mm f/4 SL Nikkor-Q Auto 1:4 f =20cm    Zuiko 
200/4    Zuiko 200/5
Optical construction       9 elements in 7 groups      4-4                       5-4       
Number of aperture blades          9       6                         8           
min. focus distance               1.2 m     3 m                      2.5 m       
   2.5 m
Max Magnification                 1:4      ~1:12                      1:10        
Dimensions                      66 x 79 72.5 x 163                  67 x 127    
   62 x 105
Weight                           485 g     630 g                     510 g        
  380 g
Filter size                      49 mm (non-rotating)      52 mm                     55 mm    
      49 mm
Hood                       barrel-shaped (snap-on) Sliding, built-in        
Sliding, built-in Sliding, built-in

Focal length                     180     200                       200         
Mount to focal plane              46     46.5                       46          
Lens length                       79    163                       
127            105
Front of lens to front node.      55    -9.5                       27          

The trade-offs are pretty clear. The Nikkor isn't even what we think of as a telephoto design, with the front node inside the lens barrel. Creating a telephoto design requires more elements to maintain good optical performance, as the node moves forward (or as the glass moves back). The more complex design (with computer aided design and more recent glass choices) of the C-V allows it to be both small and good.

I've got more than enough gear to carry on our upcoming trip, so if you want a shoot out, the C-V will have to come here. :-)

Here's the competition. <http://zone-10.com/tope2/main.php?g2_itemId=15147>
And the next one to the right. 

Retro Moose

What if the Hokey Pokey *IS* what it's all about?
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