On 17/07/2011 00:38, Leon Altoff wrote:
I need a high resolution ruler.
Any decent engineer's 6 rule should have a bunch of 1/64ths on. Some
school suppliers sell filmstrips of microscope eyepiece graticules.
About 1cm divided into 100. If you are really stuck, I could put one in
the
Two questions:
Forgive my ignorance, but is there a formula or table somewhere
telling me what sort of minimum focus distances can be achieved with
different Takumars with the various Pentax extension tubes, or does
one simply have to experiment?
Seems like somewhere there should be someone who
You know about this site don't you.
http://kmp.bdimitrov.de/lenses/primes/normal/index.html
It has minimum distances for Pentax k-mount lenses.
Regards, Bob S.
On Sat, Jul 16, 2011 at 12:03 PM, Darren Addy pixelsmi...@gmail.com wrote:
Two questions:
Forgive my ignorance, but is there a formula
On Sat, Jul 16, 2011 at 12:03:47PM -0500, Darren Addy wrote:
Two questions:
Forgive my ignorance, but is there a formula or table somewhere
telling me what sort of minimum focus distances can be achieved with
different Takumars with the various Pentax extension tubes, or does
one simply have
Hi Darren,
When doing macro I've always found that magnification is more
important than minimum focusing distance. I usually set up a
combination and photograph a ruler and while I'm at it measure the
distance between the front of the lens and the subject just for good
measure so I know what I
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