Why no digicam with large sensor...

APS sensors cost $100s each. FF sensors like in the Kodak and Canon cost $100)s each and the senor backs for the large format cameras cost probably in the neighborhood of $10K each. APS size sensors are coming down in cost due to lots of R&D and higher production rates but the cost of manufacturing truely large CCD/CMOS/LBCAST chips is still very high. Large format chips still have power and tethered processing needs that make them impractical for normal outdoor use.....yet.
so that you can achieve same shallow dof as with a dslr?
--
Ken Eis
 
To pay additional 100$ would be no problem for me,
thats not much compared to the cost of a camera and lenses.

AND: APS size is not necessary, with 60% APS surface size
you could also get a visible shallow DOF and the sensor
would still be three times bigger than the 2/3' sensor.
And this should be available for 50$.
so that you can achieve same shallow dof as with a dslr?
--
Ken Eis
 
I'd be happy with a semi compact 2/3' sensor 5mp camera. None exist for a reasonable price. I think the Leica cost more than $1500.
AND: APS size is not necessary, with 60% APS surface size
you could also get a visible shallow DOF and the sensor
would still be three times bigger than the 2/3' sensor.
And this should be available for 50$.
so that you can achieve same shallow dof as with a dslr?
--
Ken Eis
 
To pay additional 100$ would be no problem for me,
thats not much compared to the cost of a camera and lenses.
It's not just an additional $100. It's an additional hundreds of dollars more. A digicam using an APS-sized sensor would actually cost more than a DSLR body alone because you would have to integrate the lens. And it would probably be the same size because you would have to scale everything up in size to be proportional with the sensor. So in the end, there isn't much sense in having a digicam with an APS-sized sensor. Just get a D70 or 300D and keep a Sigma 18-125 DC lens: http://www.dpreview.com/news/0405/04052101sigma18-125.asp

on it all the time. That'll probably the same size and cost of a digicam with an APS sensor. And you would be able to change lenses if you wanted to.
 
To pay additional 100$ would be no problem for me,
thats not much compared to the cost of a camera and lenses.
It's not just an additional $100. It's an additional hundreds of
dollars more. A digicam using an APS-sized sensor would actually
cost more than a DSLR body alone because you would have to
integrate the lens.
Ok, plus a lens with limited zoom range, and the cost of a D70,
I would pay it. The cam would probably look like, cost and have the spec
of a Leica D2.
If Leica would include a larger sensor, this would be the perfect cam for me.
 
If Leica would include a larger sensor, this would be the perfect
cam for me.
If the Leica had a larger sensor, it would also probably require a larger lens, and probably a larger body to support it, too. In the end, you have a big, boxy camera with a body about the size of a 300D or D70, except without a removable lens. It probably wouldn't have the ergonomic handgrip of an SLR. And looking through the viewfinder would mean you would see the lens protruding into view worse than it already does. So why not just get a 300D or D70, then?
 
If Leica would include a larger sensor, this would be the perfect
cam for me.
If the Leica had a larger sensor, it would also probably require a
larger lens, and probably a larger body to support it, too. In the
end, you have a big, boxy camera with a body about the size of a
300D or D70, except without a removable lens.
Not so big, because the lens may be a lens only for APS sensor size.
And the most important thing: I would have a live histogram.
 
If Leica would include a larger sensor, this would be the perfect
cam for me.
If the Leica had a larger sensor, it would also probably require a
larger lens, and probably a larger body to support it, too. In the
end, you have a big, boxy camera with a body about the size of a
300D or D70, except without a removable lens.
Not so big, because the lens may be a lens only for APS sensor size.
And the most important thing: I would have a live histogram.
The Leica Digilux 2's lens is already as large as it is, and that's for a 2/3" sensor (8.8mm x 6.6mm), which is significantly smaller than an APS sensor (23.7mm x 15.6 mm). So expect its lens to be as large as any of the current APS-specific lenses on the market (like the Sigma DC lenses). As for the live histogram, I suppose that would be nice. But I'm not sure switching to an EVF viewfinder, or having to deal with lower battery life, or the higher image noise caused by having the sensor constantly active, would be worth it. Having better metering (by the camera), better metering skill (by the photographer), and more dynamic range (by the sensor) seem like better approaches to the dilemma.
 
so that you can achieve same shallow dof as with a dslr?
Others have spolken about the sensor from the cost perspective, but I would also offer that a digicam with a larger sensor would be a hard sell to most digicam buyers because everything about the camera would have to be larger. If you use a larger sensor, you need a larger lens, more processing power, etc. This drives overall size up, and since most people who buy digicams want smaller sizes, there's no market for this.

Just my .02

Regards,
Curt
 
I doubt anyone would make a sensor to a set DOF. DOF is the outcome of many other considerations. APS, 35mm, medium and large format cameras were designed without DOF as a consideration. I doubt it will become one for digital. I just use my f stop to control it.
AND: APS size is not necessary, with 60% APS surface size
you could also get a visible shallow DOF and the sensor
would still be three times bigger than the 2/3' sensor.
And this should be available for 50$.
so that you can achieve same shallow dof as with a dslr?
--
Ken Eis
--
Ken Eis
 
If Leica would include a larger sensor, this would be the perfect
cam for me.
If the Leica had a larger sensor, it would also probably require a
larger lens, and probably a larger body to support it, too. In the
end, you have a big, boxy camera with a body about the size of a
300D or D70, except without a removable lens.
Not so big, because the lens may be a lens only for APS sensor size.
And the most important thing: I would have a live histogram.
The Leica Digilux 2's lens is already as large as it is, and that's
for a 2/3" sensor (8.8mm x 6.6mm), which is significantly smaller
than an APS sensor (23.7mm x 15.6 mm). So expect its lens to be
as large as any of the current APS-specific lenses on the market
(like the Sigma DC lenses). As for the live histogram, I suppose
that would be nice. But I'm not sure switching to an EVF
viewfinder, or having to deal with lower battery life, or the
higher image noise caused by having the sensor constantly active,
would be worth it. Having better metering (by the camera), better
metering skill (by the photographer), and more dynamic range (by
the sensor) seem like better approaches to the dilemma.
For me, a combination of a little bit more shallow DOF,
larger sensor and live histogram would be perfect.

I just looked what is offered, there will be for example
a Olympus E 1 inclusive Zuiko D 2,8-3,5/14-54 for 2000 EUR

The size is not so important, here you see the oly E1 is
not so big as the rest of the DSLRs, but ok, a little bit bigger than the leica:
http://www.dpreview.com/reviews/olympuse1/page3.asp

And compared with Leica = 135 x 82 x 103 mm
Oly = 141 x 104 x perhaps 150 incl lens

And now remove the mirror of the oly, make it a little bit smaller
( no space for the mirror ), and include a live histogram.

I guess at APS size sensor noise is not a problem even with some heat.

There are rumours Panasonic would plan such a thing, but this may be not true:
http://forums.dpreview.com/forums/read.asp?forum=1033&message=9321197
 
And now remove the mirror of the oly, make it a little bit smaller
( no space for the mirror ), and include a live histogram.
The lenses still require a specific lens-to-sensor distance to properly focus throughout their range. So removing the mirror would not reduce the space. It just leaves the same empty space. The only way to get around this is to go back to the drawing board and redesign the lenses so that they all require a shorter lens-to-sensor distance. But digital sensors of a specific size will still require a certain minimum lens-to-sensor distance. Maybe someday, someone might design a system from scratch that can do that, but I don't see Oly doing that because they just put all their effort into the E-1 system. And I don't see any other camera manufacturers starting new systems when they already have lens/camera systems. Your best bet is to stick with a digicam if you want a live histogram.
 
The lenses still require a specific lens-to-sensor distance to
properly focus throughout their range. So removing the mirror
would not reduce the space.
No, but removing the pentaprism would. Yeah, what I want is a 3/4 sensor size on a camera with interchangeable lenses - you could use the E1 lens system - but with an EVF. Ideally, the EVF would be modular so that different types of EVFs could be plugged in.

--
Jay Turberville
http://www.jayandwanda.com
 
The lenses still require a specific lens-to-sensor distance to
properly focus throughout their range. So removing the mirror
would not reduce the space.
No, but removing the pentaprism would. Yeah, what I want is a 3/4
sensor size on a camera with interchangeable lenses - you could use
the E1 lens system - but with an EVF. Ideally, the EVF would be
modular so that different types of EVFs could be plugged in.
You're still going to want some kind of eyepiece to look through. Holding a camera a foot or two in front of you while looking at the LCD to frame the picture might be fine for a little point-n-shoot digicam, but that's not going to fly for a larger camera with larger lenses. Serious photographers want to be able to look through a viewfinder to frame the picture. It also helps stabilize the camera, too, for better handholdability. Removing the pentaprism, but replacing it with an EVF, doesn't do anything to the size of the camera.
 
I don't see how cost can be pointed to. A mechanically complex 300D SLR with lens and APS sized sensor sells for the same price as the new 8MP digicams. Size may be a factor, but I think a digicam with APS sensor could be made not much larger than one of the larger 8MP digicams. Certainly there is a big range in size with those cameras with 2/3" sensors. If Nikon can build a camera the size of the 8700 I have no doubt they could build an APS sized sensor digicam not much bigger than an Olympus c-8080. I would love something like that for travel.
 
I don't see how cost can be pointed to. A mechanically complex 300D
SLR with lens and APS sized sensor sells for the same price as the
new 8MP digicams. Size may be a factor, but I think a digicam with
APS sensor could be made not much larger than one of the larger 8MP
digicams. Certainly there is a big range in size with those cameras
with 2/3" sensors. If Nikon can build a camera the size of the 8700
I have no doubt they could build an APS sized sensor digicam not
much bigger than an Olympus c-8080. I would love something like
that for travel.
A 2/3" sensor measures 8.8mm x 6.6mm. An APS sensor measures 23.7mm x 15.6mm. Stick an APS sensor into an 8700 or C8080, and you would have to scale everything up (especially the lens) to accomodate the larger sensor. The reason Nikon and Olympus can make their 8700 and C8080 so small is because they're using a sensor that's smaller than your pinky finger.
 
If Nikon can build a camera the size of the 8700
I have no doubt they could build an APS sized sensor digicam not
much bigger than an Olympus c-8080. I would love something like
that for travel.
The Olympus is supposedly custom designed for its sensor size (which is very close to APS size) and it's nearly the size and weight of a Rebel.
 
I don't see how cost can be pointed to. A mechanically complex 300D
SLR with lens and APS sized sensor sells for the same price as the
new 8MP digicams. Size may be a factor, but I think a digicam with
APS sensor could be made not much larger than one of the larger 8MP
digicams. Certainly there is a big range in size with those cameras
with 2/3" sensors. If Nikon can build a camera the size of the 8700
I have no doubt they could build an APS sized sensor digicam not
much bigger than an Olympus c-8080. I would love something like
that for travel.
I was only making reference that others had spoken about cost. I still maintain that it is not physically possible. For example, the registration distance for the lens is much larger for an APS sized sensor than a 2/3 sensor. Also, a lens that would cover the sensor would have to be much bigger in diameter.

Regards,
Curt
 

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