10000 to 1: exposure ratio - full to total

[nytecam]

Did a careful check of exposures on this morning's very dark total lunar eclipse which vary from 1/2000s @ 100ISO [full moon top left] - 1s @ 3200ISO [max eclipse bottom right] @ fixed aperture of f/4 on Vivitar 200mm zoom as below.  The ratio is 10000 to 1 ! 

Nytecam

[JamesF]

A very nice set of images

James

[David Smith]

Very nice.... and interesting as I did a similar thing 1/800th @ ISO 100 down to 1s @ ISO 3200 at totality. Fixed aperture of F/5.6 @ 300mm end of 70-300 zoom lens. One of the darkest lunar eclipses I can remember but then I haven't seen one for years.

[Steve Ward]

Nice work sir ... 

I was very surprised at the difference too , I was at 1/200 @ ISO100 pre-eclipse and 2-1/2s @ ISO 1600 at totality.

Bringing my rig down a ladder from a fourteen foot tall pier in the near pitch dark was great fun ... 

[Astro Imp]

Very nice set of images.

[David Smith]

Bringing my rig down a ladder from a fourteen foot tall pier in the near pitch dark was great fun ... 

Steve, I think you should start a new business making Health and Safety videos