RE: [APML] OT: hummers

["Dale Ireland" <direland@drdale.com>]

Thanks Robert
The 105 f/4 micro is a very sharp lens and great for astrophotos too. A
close look at the photo shows the effects of an f/4 stop at the 47cm minimum
focus distance which results in a depth of field of only 5 millimeters.
Matt's photos appear to have greater depth of field, he must have been able
to use a smaller f/stop which then requires a brighter flash especially for
such a short exposure.
Dale

-----Original Message-----
From: Robert Gendler [mailto:robgendler@worldnet.att.net] 
Sent: Sunday, June 08, 2003 11:50 AM
To: direland@drdale.com; Discussion of Film Astrophotography
Subject: Re: [APML] OT: hummers


Dale,
Thats a very sharply detailed image. I like the black background as it
highlights the subject better and is less distracting. Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/
>
>  George, I found the same thing. It took me about 100 tries to get a
couple
> good shots. http://www.drdale.com/photography/images/hummer1.jpg
> They eventually get used to the noise and flash. Mine is about 1/10,000
sec
> in broad daylight but without a backdrop like Matt so the background 
> comes out dark, Kodak Gold asa100, Nikon 105 macro f/4. Matt's are 
> about
1/30,000,
> wow.





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