Thursday, September 23, 2010

Full Moon Tonight

Handheld shot of the moon, AF-S NIKKOR 70-300mm f/4.5-5.6 IF-ED.
Taken just moments ago. It seems to be a good test of any telephoto lens to attempt this. This was taken with the Nikon AF-S NIKKOR 70-300mm f/4.5-5.6G IF-ED at 1/400s, f/8, ISO 200, handheld. At the long end, it’s 450mm on the D90. Thank goodness for VR, not that shooting at 1/400 sec. is that challenging. The moon is so bright that you can shoot this fast with a low ISO and relatively small aperture to capture all the detail.

Here’s a tight crop...
Full Moon taken with Nikon D90 with Nikon 70-300mm f/3.5-5.6 Zoom
1/400s, f/8, ISO 200, 450mm

I didn’t think it fair to post this as the actual image. It’s been cropped, resampled to the original pixel dimensions, and sharpened. It doesn’t make a bad photo.

This is a true test of the sensor’s resolving capability. There would be more detail if this were captured on film, but the focal length would have been 300mm, instead of 450mm, so it might be a wash. If I captured this with an FX camera, say the D700, the reduced focal length might also have killed the sensor resolution, which is the same as the D90 in DX format.

Here’s a photo of an almost full moon taken back in December 2009 with My Nikon Coolpix P5100 and Opteka 3.3x teleconverter, and enlarged and sharpened by the same amount:

Almost Full Moon Taken with Nikon Coolpix P5100 with Opteka 3.3x Teleconverter
1/100s, f/5.3, ISO 64, 406mm

Obviously the D90 image is superior, but I’m pretty impressed by the P5100, especially considering its tiny sensor (by comparison to the D90) and reduced focal length.

Since both of these images were not taken under the same circumstances, if it’s clear tonight I think I’ll attempt to take another photo with the P5100 at ISO 200.


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