>> I had a chance to test the 50/105VR combo and I must say that I'm
>> pleased with the results and this setup shows promise.
>
> Nice!
Thanks.
> You've opened Pandora's box, though. The next challenge is stacking
> images for more DOF. More software, a special rig with a geared
> platform, bellows... it'll never end! :-)
Yes, I have thought about the geared platform and bellows, but I think they
will hamper my shooting style since I shoot handheld. I'll probably pick up
a set in the future. The shallow DoF is hard to work with, but I don't
think software will help when shooting moving insects.
> Whose reversing rings do you use?
Just a cheapy I got on eBay.
Rita
David Littlewood - 04 Feb 2007 15:45 GMT
>>> I had a chance to test the 50/105VR combo and I must say that I'm
>>> pleased with the results and this setup shows promise.
[quoted text clipped - 11 lines]
>a set in the future. The shallow DoF is hard to work with, but I don't
>think software will help when shooting moving insects.
Now, there is an idea for super kit - a contraption which automatically
bracket-focuses at macro distances, with built-in stacking
software...and all hand-held.
Unfortunately, the bracket-focusing in macro work has to be by moving
the whole camera/lens assembly; moving the lens relative to the camera
(like the focus bracketing for normal distances found in some digital
cameras) would be useless, as the image magnification would change too
much.
David

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David Littlewood
Richard H. - 04 Feb 2007 16:11 GMT
> Now, there is an idea for super kit - a contraption which automatically
> bracket-focuses at macro distances, with built-in stacking
[quoted text clipped - 5 lines]
> cameras) would be useless, as the image magnification would change too
> much.
All you gotta do is hand-hold this rig. :-)
http://www.photomacrography2.net/forum/viewtopic.php?t=271
Cheers,
Richard
G.T. - 04 Feb 2007 18:28 GMT
>> Now, there is an idea for super kit - a contraption which
>> automatically bracket-focuses at macro distances, with built-in
[quoted text clipped - 9 lines]
>
> http://www.photomacrography2.net/forum/viewtopic.php?t=271
That's pretty wild. But I'm confused about his focus bracketing and
stacking. I understand stacking when it comes to astrophotography but
how does it work with different focus points?
In a subject with a lot of depth are you just getting different layers
into focus? But wouldn't that cause the whole thing to be blurry when
stacked?
Greg

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Waking to the sound of laughter
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David Littlewood - 04 Feb 2007 18:59 GMT
>>> Now, there is an idea for super kit - a contraption which
>>>automatically bracket-focuses at macro distances, with built-in
[quoted text clipped - 17 lines]
>
>Greg
AIUI, the stacking programs select the sharp bits from each "slice" and
combine them together to give an overall sharp image.
David

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David Littlewood
Lionel - 04 Feb 2007 19:04 GMT
>>> Now, there is an idea for super kit - a contraption which
>>> automatically bracket-focuses at macro distances, with built-in
[quoted text clipped - 17 lines]
>into focus? But wouldn't that cause the whole thing to be blurry when
>stacked?
A similar technique is used in some kinds of microscopy. You use a
pinhole & a ton of light, & all the out of focus stuff becomes
essentially invisible, so each image in the stack is like a thin slice
of the subject. I'm guessing that this is something like that.
David Littlewood - 04 Feb 2007 18:57 GMT
>> Now, there is an idea for super kit - a contraption which
>>automatically bracket-focuses at macro distances, with built-in
[quoted text clipped - 8 lines]
>
>http://www.photomacrography2.net/forum/viewtopic.php?t=271
Yes, that kind of thing - perhaps a little less extreme!
Thanks for the link.
David

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David Littlewood
Rita Ä Berkowitz - 04 Feb 2007 21:24 GMT
> All you gotta do is hand-hold this rig. :-)
>
> http://www.photomacrography2.net/forum/viewtopic.php?t=271
Amazing!
Rita
Rebecca Ore - 04 Feb 2007 17:00 GMT
> Unfortunately, the bracket-focusing in macro work has to be by moving
> the whole camera/lens assembly; moving the lens relative to the camera
> (like the focus bracketing for normal distances found in some digital
> cameras) would be useless, as the image magnification would change too
> much.
So you put the device between the camera and the tripod.
On line, I've seen some amazingly unnatural shots by a Japanese
photographer (didn't bookmark it but some of you may know who I'm
referring to) where the depth of field seemed like matter of inches
rather than the fractions of inches in most macro shots. A guy named
Jeff Boyd ("The 2Belo") posted a link to them on his LJ, but I couldn't
find it looking through quickly.
(Macro, a world in itself).