QE level of 5D3 and D800

Started Apr 22, 2012 | Discussions thread
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Astrophotographer 10 Senior Member • Posts: 7,792
QE level of 5D3 and D800

Here is a site that measures the QE of DSLR sensors (QE is quantum efficiency or the efficiency the sensor detects light with ie 100% would be perfect, 20% would be abyssmal).

D800 is 57% and 5D3 is 49%. But 5D2 was only 33%. That's a huge gain for 5D3 and not being pushed in their marketing.

To get those figures in perspective my $14,000 astrophotography camera is a mono CCD, that is cooled to -35C and has a QE of 60%.

57% uncooled, with a Mayer matrix is unbelievably high. Normal DSLR sensors have been in the high 20 to low 30%'s.

http://books.google.com.au/books?id=s6rE3Z6PK44C&pg=PA321&lpg=PA321&dq=geometric+quantum+efficiency&source=bl&ots=-FOmCDmYms&sig=ssxko11hjQEw5EfF5GvRDUAYdD8&hl=en&sa=X&ei=9paTT5-xCcmYiAfqjZ2_Dw&ved=0CEUQ6AEwAg#v=onepage&q=geometric%20quantum%20efficiency&f=false

Greg.

 Astrophotographer 10's gear list:Astrophotographer 10's gear list
Sony Alpha 7R II Fujifilm X-T2 Sony FE 55mm F1.8 Fujifilm XF 50-140mm F2.8 Fujifilm 16-55mm F2.8R LM WR +7 more
Canon EOS 5D Mark II Canon EOS 5D Mark III Nikon D800
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