On Sep 11, 2011, at 6:01 PM, Godfrey DiGiorgi wrote:

> On Sun, Sep 11, 2011 at 5:47 PM, Larry Colen <[email protected]> wrote:
>> ... Oh come on Godfrey, you know that wasn't meant as an attack.
> 
> The way you wrote it could be considered an ad hominem attack. As long
> as you want to comment on my writing style, I'll comment on yours, ok?

Sure thing, it doesn't bother me. Then again my hide is a bit thicker than some 
of the delicate souls on this list.

> 
>> ... your writing style is not always the most conducive to love, peace and 
>> understanding ...
> 
> You should be used to it by now. I could care less about love, peace
> and PC smarminess in a discussion of camera technology and technique.
> Good, clear information and directly stated opinions are all I find
> useful.

That's kind of where the understanding bit comes in.

> 
>>> There are legitimate uses for extraordinary sensitivity. There's never
>>> any point to being obsessed with it as some sort of Holy Grail.
>> 
>> Unless, for example, it is the performance limitation that keeps you from 
>> getting the pictures that you're trying to take.
> 
> I don't know how being obsessed with something as a Holy Grail helps
> you in getting the pictures you want to make.

People are always looking for technical solutions that'll solve all of their 
problems. Taking a look at cars you have:

ABS, soon to be mandated, even though it has shown not to reduce accidents, 
just change the likelihood of types of accidents.
Passive restraints: that were mandated, even though many of them worked worse 
than manual seatbelts.
Four Wheel Drive: Useful for getting cars in the snow, or mud, to go forward, 
doesn't help their ability to stop or turn, and just adds weight on dry 
pavement.
Hybrids:  In most cases, a pure internal combustion engine car could have lower 
total overall cost and impact to the environment 

Most of them are actually useful to some percentage of people (though I would 
argue against expending resources to save the lives of people too stupid to put 
on a seatbelt, especially at the expense of my own safety), but are certainly 
not useful, nor worthwhile to the vast majority.

I wouldn't say that I obsess over high ISO quality, but it's been the principal 
limiting factor that I run up against the most often.  Two more stops of speed 
and I could use f/2.8 zooms in most cases where I now need to us f/1.8 and 
faster primes.  Another stop or two of speed and I could use relatively 
inexpensive f/4 zooms rather than annoyingly expensive f/2.8 zooms, where I can 
get away with the zooms today.  

Even when you aren't pushing the performance envelope, a few more stops of 
sensor speed, and you could get todays performance without the cost and 
complexity of image stabilization.   

I've played with Marco's camera and Voigtlander 25/0.95 lens, and it's a really 
sweet system, but the poor high ISO sensor performance keeps it from getting as 
good of shots as I can with my K-5 and an f/1.8 lens.  Even with the advantages 
that EVIL has for manually focusing in a dark room.

I won't say that it's a holy grail, but in terms of image quality, I'd say that 
it, along with the closely related dynamic range, would solve more problems 
than just about any other measurable quantity.

> 
> When I run into the limitations of my equipment, I work on thinking up
> ways to extend the envelope so I can still make my photographs.

Or you swap out to another system.


--
Larry Colen [email protected] sent from i4est





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