If you are seeing this that means you have arrived at the new Jer Zone server, hosted on TextDrive.com hardware. I managed to sneak in as one of their, uh, Venture Capitalists a few months ago and have only now had the time and organizational capacity to move.
The toughest part so far was moving the images. Jer Zone and How Zone images have been stored in a MySQL table instead of the filesystem for over a year. That has worked out nicely for the most part. The problem is exporting, moving, and importing 44MB of sql insert statements. I'm sure there's a better way (Shelley would know).
Kick the tires, leave a comment, let's see what it takes to break this puppy...
comment?
permanent link
email thisA couple images from the past week. The moon was captured through a 120mm refractor telescope using a 10mm lens and a 2x barlow (effectively a 5mm lens). I think that's a magnification of 24x without taking into account the camera lens.
I've been reading photography books from the library and around sunset on Friday decided to experiment with camera settings and flowing water. Lucky me we have the pond's waterfall and plenty of frog models. In fact there was an audience of at least seven frogs (could have been more but you know how secretive they are).
The shot was setup with an exposure time of 1/25 of a second to smooth out the flow of water. F-stop of f/8 and focal length of 5.4mm using the A70's macro mode and no flash.
David Pogue's iLife Mini Manual. [1.5MB PDF]
got it , thanks.
And what would iLife be without a FREE iPod?
See:
http://www.freeiPods.com/default.aspx?referer=8496639
I first though this was a scam, but from a few reviews and comments I've read, seems to be legit. Go for it!
I believe you mean "(effectively a 20mm lens)", as, if I remember right, lens length is roughly the distance from the viewing plane to the focal point of the lens, so 5mm would be wider than 10mm.
Actually it would be 5mm. With or without a barlow a 40mm lens shows more of the sky than does a 10mm. The downside is that there's less light with the 10mm.
A barlow "increases the effective focal length of an objective lens, thereby increasing the magnification." Which I copied from the excellent barlow tutorial below.
The nice thing about the barlow is that it effectively doubles the number of lenses you own. The 40mm is also a 20mm, the 25mm a 12.5mm, and the 10mm a 5mm.
http://www.astunit.com/tutorials/barlow.htm
That said I am far from the person to rely upon in such matters.
It still confuses me how much the focus point moves back after removing the star diagonal. Light origami.