PESO - Hertzlia Marina vs K10D

[John Forbes]

On Mon, 01 Jan 2007 12:17:01 -0000, Boris Liberman <boris71 at gmail.com>  
wrote:

> Hi!
>
>> They may be excellent enough, but are they available in the focal  
>> lengths you require?  (The answer, of course, is No).
>
> John, do you really *know* what focal lengths I do require?

That is not the right question.  The question is, how do I know that you  
require more than the choice of three focal lengths provided by the FA Ltd  
lenses?

Well, there is an obvious answer, which is that there is only one chance  
in many millions that you require only three focal lengths, and that they  
just happen to be precisely 31mm, 43mm, and 77mm.  So I feel safe taking  
bets on the matter.

But I was going on what you said yourself: "Cotty, I don't have the 21  
lim. In this range all I have is FAJ 18-35. I don't want to buy 21 lim  
because it is not full frame. So my widest prime is 31 lim that I used."

 From this I infer that you would have used a 21 if you had had one, and  
you haven't bought one because it is not full-frame.

You also said: "However I find FAJ 18-35 to be completely satisfying my  
wide angle needs for now."  Clearly this isn't always true or you would  
have used it here instead of the 31 (I'm assuming you had it with you).

And later you said that in your (perhaps controversial) opinion: "no DA  
lens, be it zoom or prime or even limited prime of the new reduced image  
circle series (21, 40, 70) comes close to the performance of original  
limited lenses (31, 43, 77)."

 From this I infer that even if you weren't worried about the image circle,  
you still might not buy a DA Ltd on perceived lack-of-quality grounds.

But despite this concern for quality you say that you are completely  
satisfied with a cheap, slow, kit zoom to cover all focal lengths below  
31mm.  This I find odd.

>> And if you really believe that Pentax is going to bring out a  
>> "full-frame" digital, then you need to
>> recalibrate your reality grasp.  Currently it is excessively skewed in  
>> the direction of wishful thinking.

> According to the time line published on DPReview, Canon introduced D30
> in April 2000. Pentax introduced *istD in Feb 2003. Did we really
> believe that Pentax was going to introduce DSLR between Apr 2000 and
> Feb 2003?

I don't think this is germane.

> I don't want to provoke a heated debate here. However, I find no skew
> neither with my reality grasp nor with reality grasp of Godfrey who
> has different opinion. Neither you, nor Godfrey, nor I for that matter
> can foresee the future. We can make assumptions. Assumption is
> something that you either accept or you don't. Either way, live goes
> on, doesn't it?

Not all assumptions are of equal worth, and that is especially true in  
this case.  When a company replaces almost its entire lens line with  
lenses that do not suit a particular image circle, it is logical to assume  
that the company has no plans, short or long term, to revert to that  
particular image circle.  The logic is reinforced by the fact that the  
company DOES have firm plans to introduce a digital camera covering a  
rather larger image circle, for which a separate lens line already  
exists.  Thus there will be a product for the few who require very high  
resolution.

Nikon seem to be doing OK without a 35mm-sized sensor.  They are another  
company that sees no need for one.  Likewise Sony, Olympus, et al.   
Indeed, Olympus believe that even an APS-C sized sensor is unnecesssarily  
large.  So no camera manufacturer other than Canon thinks a "full-frame"  
sensor is a practicable proposition.

You may choose to ignore these facts, but please don't suggest that your  
unsupported belief (AKA wishful thinking) carries the same weight as the  
generally accepted assumption that Pentax will not bring out a 35mm-sized  
sensor for the K-mount.  There simply is no market for it at the price it  
would have to sell for, and no need for it because in normal use a 10MP  
sensor provides greater resolution than almost all 35mm film, and with  
acceptable quality.  And anyway, who says that APS-C will stop at 10MP?

I think I see a DA 21mm Ltd in your future.  :-)

Happy New Year

John





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