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Low Light & Night
Astrophotography and Mirror Lock Up
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<blockquote data-quote="Essence of Imagery" data-source="post: 5297" data-attributes="member: 920"><p>I know exactly what you're talking about Karlyh. It might be an issue on the consumer-level cameras, and I know it's most certainly (wife has pics to prove it) an issue on the Nikon D80. It's not a "sensor burn" per se, it's actually the build-up of heat on the sensor from the electronics around it. With long exposures (think 3 or more minutes) the electronics in the camera tend to heat up - and the heat dissipation in the compact camera bodies isn't sufficient to avoid this.</p><p>The issue causes a purple-ish "burn" of your image in a "vignette-ish" style around the outer edges of your images. It's nothing that (so far) has shown any damage to the camera itself, it works perfectly fine under regular shooting conditions, it just doesn't like sitting with the sensor gathering light for too long.</p><p></p><p>My D300, on the other hand, I've set it out on the back porch and done 1hr. + long exposures, one right after the other, and it doesn't have the heat issue.</p><p></p><p>More information here: <a href="http://dpanswers.com/content/tech_defects.php#ampn" target="_blank">DPanswers: Defects</a></p></blockquote><p></p>
[QUOTE="Essence of Imagery, post: 5297, member: 920"] I know exactly what you're talking about Karlyh. It might be an issue on the consumer-level cameras, and I know it's most certainly (wife has pics to prove it) an issue on the Nikon D80. It's not a "sensor burn" per se, it's actually the build-up of heat on the sensor from the electronics around it. With long exposures (think 3 or more minutes) the electronics in the camera tend to heat up - and the heat dissipation in the compact camera bodies isn't sufficient to avoid this. The issue causes a purple-ish "burn" of your image in a "vignette-ish" style around the outer edges of your images. It's nothing that (so far) has shown any damage to the camera itself, it works perfectly fine under regular shooting conditions, it just doesn't like sitting with the sensor gathering light for too long. My D300, on the other hand, I've set it out on the back porch and done 1hr. + long exposures, one right after the other, and it doesn't have the heat issue. More information here: [url=http://dpanswers.com/content/tech_defects.php#ampn]DPanswers: Defects[/url] [/QUOTE]
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