Letter of the Week Special: The Full Frame Decision

Dear Sir, The article on choosing between APS-C and full frame (The Full Frame Decision, April, pg 54) was interesting but seemed to minimize low light performance. As shown by the attached, the difference between a Nikon D300 and a Nikon D700 is no small matter. Low Light ISO is defined as the maximum ISO providing at least 30 dB signal to noise ratio. For the D300 the number is ISO 679 for the D700 the number is ISO 2303. This is not minor, this is a blowout. This is not my only criterion but