Quote:
Originally Posted by gregbradley
The cameras with the highest Dynamic Range on the market currently are the Nikon D600, D800 and D4. These are all around 13EV measured by DXO or more like 11.3 measured by others. This is at ISO100 and stays similar to about ISO400. Then it drops off at about 1 EV fall by every doubling of ISO.
5D3 is similar but 2 stops lower in EV to start. The difference is in the shadows where the strength of the Nikons is shadow areas are often fully recoverable with detail and little noise. The 5D3 and D800/D600 DR is about the same from about ISO800 onwards. In highlights the 5D3 and D800/D600 are about the same all the way along the ISO range, its the shadows performance that differs.
Some 5D2 users adopt a strategy of overexposing to protect the shadows as 5D2 is good with highlights not so much with shadows. However in an eclipse I am not so sure you want to protect shadows so much as not blow out your highlights rendering the image useless.
I thought that theory may be useful.
Greg.
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Hi Greg
You (and Joe) have shown beyond any question we will have to shoot at 100 or 80 ISO to retain dynamic range.
As far as cameras go it will be a case of stick with what we have for no matter what we have in DSLRs or whatever they are streets ahead of the Canon D60 I used in 2002 which was my only SE so far.
Have nearly finished adapting the plates to mount two scopes and cameras side by side on my EQ6 mount. With two laptops, two scopes, EQ6 with extra counterweights, deep cycle battery, inverter, wooden feet for tripod legs, tools, all the cables and bits and pieces I may have to hire another camel.
Brian