dSLR thread - Page 45

Stereodude · 08-24-2010, 11:23 AM

Quote:

Originally Posted by Handruin

Yeah I don't know what made them choose APS-H, but will that mean a possible full-frame sensor at 180MP in the future?

Hopefully it's just a dick waving exercise and not a sign of things to come.

BingBangBop · 08-24-2010, 11:23 AM

Seems to me that all this is just a prototype used to confirm their research. As such, it is no more likely to produce a FF sensor at 180MP than their previous 50MP prototype sensor created a commercial FF sensor at 75MP.

In the long run, the research will produce improved commercial sensors but market forces and commercial realities are what will determine what products they will end up developing out of it.

ddrueding · 08-24-2010, 12:34 PM

Isn't that past the JPEG size limits? I wonder what the RAW file size would be.

Chewy509 · 08-25-2010, 01:46 AM

Quote:

Originally Posted by ddrueding

Isn't that past the JPEG size limits? I wonder what the RAW file size would be.

Depending on the bits per channel for RGB.

180MP * 64bits (per pixel) = 1440MB = 1.4GB
(Assuming 16bits per colour channel, and padded to 64bits).

180MP * 32bits (per pixel) = 720MB
(Assuming 8bits per colour channel, and padded to 32bits).

But is a sensor is only 5bits per channel, then 180MP * 16bits = 360MB per image.

LunarMist · 08-25-2010, 02:19 AM

Canon bodies do not currently output uncompressed RAW files. The older Canon bodies produced RAW files that are about 1-1.2 MB/MP. The RAW files produced by newer cameras contain full-sized embedded jpegs and are about 1.5 MB/MP. The 120MP sensor may be on the noisy side, so the factor may be a little higher, but it also may forgo the full-res embedded jpeg. A decent estimate would be 175-200 MB for the 120 MP sensor. Of course hardware such as DSP(s), RAM, memory card, and battery is not really ready to support such a large throughput (1100+MP/sec.) in a conventional DSLR package.

Stereodude · 08-25-2010, 08:20 AM

Quote:

Originally Posted by LunarMist

Canon bodies do not currently output uncompressed RAW files.

Sure they do. They output the data that came directly from the sensor. Since they're not a Foveon type sensor they don't have RGB data for every pixel which makes them smaller than an uncompressed TIFF.

LunarMist · 08-26-2010, 06:14 AM

Damn. Canon has a shedload of new teles at crazy prices. That 400/2.8 IS II looks nice. http://www.usa.canon.com/cusa/about_...01e024801e8289

BingBangBop · 08-26-2010, 10:33 AM

The prices are rather high at $7,000 and $11,000 for the 300/2.8L and 400/2.8L respectively. At that level the only ones that will be buying are big money professionals.

ddrueding · 08-26-2010, 11:43 AM

Probably some great glass, though.

I've got an outdoor portrait shoot coming up in a few weeks. Wondering what additional lighting support I should have? Secondary flash (I have a 430EX at the moment)? Reflectors?

Stereodude · 08-26-2010, 12:16 PM

Shade and a reflector.

ddrueding · 08-26-2010, 01:24 PM

That fisheye zoom also looks pretty interesting. I also like the "by-the-way" mention of the 60D.

ddrueding · 08-26-2010, 01:25 PM

Quote:

Originally Posted by Stereodude

Shade and a reflector.

Shade I'll have some of, though I'm hoping for overcast. If I don't have an assistant for the reflector, what are the best tricks for positioning it?

Stereodude · 08-26-2010, 03:36 PM

Finding an assistant.

LunarMist · 08-26-2010, 08:40 PM

Quote:

Originally Posted by ddrueding

That fisheye zoom also looks pretty interesting. I also like the "by-the-way" mention of the 60D.

Canon EF-S bodies are aligning with Nikon DX bodies in market categories. The 60D is the equivalent to a Nikon 90D or what will replace it soon and the 7D is the equivalent of the D300s or what will replace it.

e_dawg · 08-27-2010, 12:46 AM

Quote:

Originally Posted by LunarMist

Canon EF-S bodies are aligning with Nikon DX bodies in market categories. The 60D is the equivalent to a Nikon 90D or what will replace it soon and the 7D is the equivalent of the D300s or what will replace it.

I find that interesting, as the two companies used to stagger their products so they wouldn't directly compete. I think they will go in separate directions with respect to the EVIL segment, however, with Canon going more towards the Sony A55 compact dSLR style and Nikon towards the mirrorless big P&S m4/3 style.

e_dawg · 08-27-2010, 12:57 AM

Quote:

Originally Posted by e_dawg

I find that interesting, as the two companies used to stagger their products so they wouldn't directly compete. I think they will go in separate directions with respect to the EVIL segment, however, with Canon going more towards the Sony A55 compact dSLR style and Nikon towards the mirrorless big P&S m4/3 style.

... Or maybe for Nikon, rangefinder style, evoking the memory of Nikon's rangefinder days and playing the nostalgia card like Olympus did with the EP-1 evoking the memory of the Pen, or maybe they draw on the quirkily little 35ti

08-24-2010, 12:34 PM	#2203
ddrueding Fixture Join Date: Feb 2002 Location: Monterey, CA Age: 30 Posts: 11,361	Isn't that past the JPEG size limits? I wonder what the RAW file size would be. __________________ i7EE@4Ghz, 12GB RAM@1600MHz, OCZ Z-Drive m84 512GB, HD5870, Gigabyte GA-EX58A-UD9, 7 Ultimate Lenovo Thinkpad T410: i7 M620 (2.67Ghz), 8GB RAM, 200GB Vertex LE, NVidia NVS 3100M (512MB), 14.1" (1440x900)

08-25-2010, 02:19 AM	#2205
LunarMist Hairy Aussie Join Date: Jan 2003 Location: USA Posts: 5,350	Canon bodies do not currently output uncompressed RAW files. The older Canon bodies produced RAW files that are about 1-1.2 MB/MP. The RAW files produced by newer cameras contain full-sized embedded jpegs and are about 1.5 MB/MP. The 120MP sensor may be on the noisy side, so the factor may be a little higher, but it also may forgo the full-res embedded jpeg. A decent estimate would be 175-200 MB for the 120 MP sensor. Of course hardware such as DSP(s), RAM, memory card, and battery is not really ready to support such a large throughput (1100+MP/sec.) in a conventional DSLR package. __________________ --Lunar

08-26-2010, 06:14 AM	#2207
LunarMist Hairy Aussie Join Date: Jan 2003 Location: USA Posts: 5,350	Damn. Canon has a shedload of new teles at crazy prices. That 400/2.8 IS II looks nice. http://www.usa.canon.com/cusa/about_...01e024801e8289 __________________ --Lunar

08-26-2010, 01:24 PM	#2211
ddrueding Fixture Join Date: Feb 2002 Location: Monterey, CA Age: 30 Posts: 11,361	That fisheye zoom also looks pretty interesting. I also like the "by-the-way" mention of the 60D. __________________ i7EE@4Ghz, 12GB RAM@1600MHz, OCZ Z-Drive m84 512GB, HD5870, Gigabyte GA-EX58A-UD9, 7 Ultimate Lenovo Thinkpad T410: i7 M620 (2.67Ghz), 8GB RAM, 200GB Vertex LE, NVidia NVS 3100M (512MB), 14.1" (1440x900)

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08-24-2010, 11:23 AM	#2202
BingBangBop Learning Storage Performance Join Date: Nov 2009 Posts: 111	Seems to me that all this is just a prototype used to confirm their research. As such, it is no more likely to produce a FF sensor at 180MP than their previous 50MP prototype sensor created a commercial FF sensor at 75MP. In the long run, the research will produce improved commercial sensors but market forces and commercial realities are what will determine what products they will end up developing out of it.

08-26-2010, 10:33 AM	#2208
BingBangBop Learning Storage Performance Join Date: Nov 2009 Posts: 111	The prices are rather high at $7,000 and $11,000 for the 300/2.8L and 400/2.8L respectively. At that level the only ones that will be buying are big money professionals.

08-26-2010, 11:43 AM	#2209
ddrueding Fixture Join Date: Feb 2002 Location: Monterey, CA Age: 30 Posts: 11,361	Probably some great glass, though. I've got an outdoor portrait shoot coming up in a few weeks. Wondering what additional lighting support I should have? Secondary flash (I have a 430EX at the moment)? Reflectors?

08-26-2010, 12:16 PM	#2210
Stereodude Storage? I am Storage! Join Date: Jan 2002 Location: Michigan Posts: 3,872	Shade and a reflector.

08-26-2010, 03:36 PM	#2213
Stereodude Storage? I am Storage! Join Date: Jan 2002 Location: Michigan Posts: 3,872	Finding an assistant.

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