For me, it's the DOF that is the biggest point. The 25/1.4 Summilux is a great 
lens, but a 25mm lens has a huge DOF compared to a 50/1.4 wide open. 

Jeffery




On Sep 26, 2010, at 5:48 PM, Steven Desjardins wrote:

> I agree with the gist of this.  People focus (no pun intended) on FF
> systems as the "way to go" because there are so many lenses out there
> built for this format.  Pentax, Olympus, Panasonic, etc.  are
> beginning to have extensive lens systems based on smaller formats.
> Given the quality of the sensors most folks, even most pros, could get
> away with a smaller sensor.  yes I know noise is better, you get more
> cropping space, lenses are wider, etc.  I know that the laws of nature
> dictate that smaller sensors will always be at a disadvantage relative
> to larger ones.  Still, in business the law of "good enough" applies.
> OTOH, mirrorless systems are smaller and lighter and very appealing to
> customers with $$$.  The funny part is that Pentax will soon have one
> of the biggest sensor systems under $10k.  It will be purchased by
> those who can really use it and those who really want it (who have the
> $$$).
> 
> On Sun, Sep 26, 2010 at 6:28 PM, P. J. Alling
> <[email protected]> wrote:
>>  Nikon and Canon, are probably worried that mirrorless systems will
>> cannibalize their current entry level DSLR business.  Sony Pentax and
>> Olympus have much less to loose and much more to gain.
>> 
>> On 9/26/2010 5:50 PM, Dario Bonazza wrote:
>>> 
>>> Despite keeping relatively high prices, mirrorless systems are told to
>>> have already taken 12% of sales on interchangeable-lens systems in Japan,
>>> and growing quickly. I wonder what Canon & Nikon are waiting for jumping on
>>> the boat...
>>> 
>>> Dario
>>> 
>> 
>> 
>> --
>> "His lack of education is more than compensated for by his keenly developed
>> moral bankruptcy."
>>     -Woody Allen
>> 
>> 
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> 
> -- 
> Steve Desjardins
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