Is the Pentax K100D what the E-system could have been?

So far, smaller DSLR formats like FourThirds have consistently had
higher sensor/lens resolution in the sense of lp/mm, meaning that
you get a given telephoto reach (and a given macro working
distance) with shorter focal lengths, and thus overall smaller
lighter lens and body kits as soon as you want reasonable telephoto
range.
Smaller DSLR formats like FourThirds - could you be more specific? Which smaller dSLRs do you have in mind?
This is a natural advantage as far as lens resolution anyway:
scaling down lens designs to get the same angular FOV over a
smaller sensor and thus with a shorter focal length tends to
increase resolution in lp/mm.
If this is true (and I believe it is) then we are in real trouble! The main argument for why Canon/Nikon and just about everyone else outresolve Zuikos (by comparisons at photozone.de) is that Olympus sensor is lacking resolving power and detail in comparison to Nikoin's and Canon's. Now you are saying we have the best sensor to focal lens setup of any - so then zukos are really not so good as sigmas, tamrons, tokinas, ets., .... is that so?
For example, as a rough resolution measure, look at pixel spacing
in mainstream priced DSLR's:
5.3 microns E-500
5.6 microns E-330
6 microns Sony A-100, Nikon D200
6.4 microns Canon 350D, 20D, 30D

Adequate AF performance requires apertures of about f/5.6, which
sets about the same maximum focal length limit once you have a
size/weight limit, and within that limit, the smaller, higher
resolution sensor gives more telephoto reach.
You lost me here. Could you rephrase it? Who has the higher resolution sensor and how does it translate into ultimate quality?
  • Sergey
 
But the reasons why I purchased into 4/3rds are currently available in
4/3rds and nowhere else.
You:
What are those strong points exactly?
It's just that I don't see any inherent 4/3 advantages so far.
More DOF for Macro maybe? Size isn't much of a factor.
I don't know what else could be an advantage of a smaller sensor.
Precisely! If you think of 4/3rds only as a different sized
sensor (slightly smaller, but not really much smaller than 1.6
crop), then the advantages are not clear. The reasons that I
purchased are due to package benefits reguardless of the precieved
compromises of the smaller sensor. I really value the dust buster,
the complete weather sealing, pixel mapping, the quite E-1
shutter/mirror, the rugged build, the second to none external WB
sensor, the very accurate, even if slowish by today's standards AF,
the ergonomics and over all size of body and 2 lenses that give
28-400mm coverage, the out of camera colors (and in camera
perameters), the way mirror lock up is handled, Oly innovation that
isn't a "me too" system, digital specific lenses, and the fantastic
price I paid for my E-1 kit. Nothing else compares to the total
package for the price. Any sealed pro built body from any other
company costs at least triple (if not 6x) the cost. Nikon dosn't
have a truely weather sealed system at any level. I like to shoot
in foul weather. No one had done away with the dust problem as of
yet. Pixel mapping does matter because as sensors age they have
pixels that go out. A friend of mine dumps his Nikon regularly for
a new one due to this. Canon has FF. So what, it's really
expensive, collects dust like no other, and has no real wide angle
solution without vignetting and softening at the edges. IS isn't
that big a deal for me, and neither is having twice the resolution
I need. When I shoot events with Canon I spend nearly twice the
time post processing. That matters. I think the depth of field
issue and noise issue with 4/3rds is very overblown. Most Canon and
Nikon users I shoot with don't go over 200 ISO. So basically, for
real life, what 4/3rds has is much more important that what it
lacks, and I can afford it. If I had unlimited money, I would be
shooting medium format digital, but for now, my E-1 system meets my
expectations over and over again.

Besides the reasons I just listed, I also believe in the future of
the system. The ideas makes more sense to me than retrograding 35mm
equipment. I am quite certain that noise will become less and less
an issue as technology increases (it's not a huge issue on my E-1).
I also believe that price for the bodies could be affected by
sensor size. That's one reason I think I was able to purchase an
E-1 system a year ago for a killer price. I also believe in the
consortium idea and the benefits of being able to buy a Panasonic,
Oly, or (possibly) fujifilm body for my current lenses. Or I can
buy Leica or Sigma lenses (and I'm betting that more options will
follow). None of these ideas are really advantages yet, but they
are showing promise to be a strong advantage.

Plus, I like the Oly community. A bunch of folks that are willing
to look past the spec sheets to the pictures. Lots of folks say,
"it's not about the equipment, but who uses it." But most of us
still act like it's all about the equipment. I think "it" is about
the equipment we can afford and dosn't get in the way of the
pictures.

Cheers, Seth

--
What if the hokey pokey really is what it's all about?

--
http://www.wallygoots.com
Thanks for taking the time to reply. I like OLY and may even get one. However, most of those reasons aren't inherent to a 4/3 size sensor. They are features of particular cameras that you like, not items exclusive to that format. Such as having a dust buster... it doesn't have anything to do with sensor size.
 
I care less about the sensor size than the total package. Oly could have made the E-1 with an APS-C, and if it met my priorities and budget like the E-1 dose currently, then I would be using that. However, the price for this current feature set may have something to do with the sensor size, and people tend to compare cameras with numbers (based on size of sensor) rather than the whole package.

Cheers, Seth

--
What if the hokey pokey really is what it's all about?

--
http://www.wallygoots.com
 
I care less about the sensor size than the total package. Oly could
have made the E-1 with an APS-C, and if it met my priorities and
budget like the E-1 dose currently, then I would be using that.
However, the price for this current feature set may have something
to do with the sensor size, and people tend to compare cameras with
numbers (based on size of sensor) rather than the whole package.

Cheers, Seth
I think one of the main advantages of dSRL over P&S cameras is the sensor size. You simply can not get those isolated subjects and blurry backgrounds with pocket cameras. That is why no pro will use it no matter how light and convenient it is. And then of course comes pixel size, per pixel resolution, and dynamic range with noise. One of the arguments for 4/3 being a good format is the overall "size of the system". As I posted in my earlier posts that is no longer an argument; in fact it has never been and never is, and the only advantage it will give you is when using long and narrow telephoto lenses. With f/2 or f/2.8 at 300mm you will still need a wide and heavy front end glass, this is simply the law of physics and you can not get by it. So what is the advantage of 4/3 format then? Among the reasons for choosing Olympus system you have listed dust buster, weather sealing, and pixel mapping. None of those have anything to do with sensor size of course, but then again, I guess whatever helps you. In fact I looked at your gallery and have not found a single image where you might have taken advantage of either of the keys you have listed; weather sealing, dust shaker, etc. So cameras against the numbers then, huh? Ah, whatever ...
  • Sergey
 
Hi Sergey,

The smaller 4/3 sensor size allow the light from the telecentric designed ZD lenses to hit the sensor straight on. I notice better edge sharpness and very minimal vignetting even with the 7-14.

The smaller image circle allowed the design of fast and compact lenses with unique focal range such as the 7-14 4.0, 50-200 2.8-3.5 and 150 2.0 to name a few. Admittedly some ZD lenses are HUGE and expensive but they are f 2.0

If all things are equal, 4/3 will be far behind a 36 x 24 sized sensor in terms of absolute pixel count, low high ISO noise and shallow DOF.

Personally, I will buy a 12mp, clean 1600 4/3 dslr over a 25mp, clean 6400 36 x 24 dslr.
Regards,
Alfred
 
... I don't see any rain or dust in my pictures either. But that is due to the system being resistant to these, not because I don't shoot in those conditions.



--
What if the hokey pokey really is what it's all about?

--
http://www.wallygoots.com
 
I took this with E-500 and plactic bag on top of it. I would care more what camera can do rather than how sealed it is. Plus it would not be my regular spot anyway.


  • Sergey
 
Hi Sergey,
The smaller 4/3 sensor size allow the light from the telecentric
designed ZD lenses to hit the sensor straight on. I notice better
edge sharpness and very minimal vignetting even with the 7-14.
The smaller image circle allowed the design of fast and compact
lenses with unique focal range such as the 7-14 4.0, 50-200 2.8-3.5
and 150 2.0 to name a few. Admittedly some ZD lenses are HUGE and
expensive but they are f 2.0
If all things are equal, 4/3 will be far behind a 36 x 24 sized
sensor in terms of absolute pixel count, low high ISO noise and
shallow DOF.
Personally, I will buy a 12mp, clean 1600 4/3 dslr over a 25mp,
clean 6400 36 x 24 dslr.
Regards,
Alfred
Thanks Alfred,

You hit it right to the point.
  • Sergey
 
I'm glad you can trust your camera to a bag. That's not my style. Good thing not all cameras are the same.

Cheers, Seth

--
What if the hokey pokey really is what it's all about?

--
http://www.wallygoots.com
 

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