Search found 596 matches

by dmillard
Wed Aug 20, 2008 5:38 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Peacock feather
Replies: 4
Views: 2568

Peacock feather

http://www.photomacrography.net/forum/userpix/159_peacock2_copy_1.jpg Approx. 3X, 63mm Luminar at f/4.5 http://www.photomacrography.net/forum/userpix/159_pekok_2.jpg Approx. 5X, Nikon CF N Plan Achro 4/0.13 I'm still struggling with keeping the vibrancy of iridescent subjects, while retaining detai...
by dmillard
Tue Aug 19, 2008 5:03 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Vertical stacking set-up
Replies: 15
Views: 8205

What is it like to work with the Novoflex fiber optic flash? Are the digital micrometer readouts illuminated when the 'lights' go out? Craig I like working with it a lot, but I was fortunate to buy a demo model at a greatly reduced price several years ago. At their current cost, I would think of wa...
by dmillard
Mon Aug 18, 2008 7:10 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Vine Sphinx Moth at 20X
Replies: 6
Views: 3809

Hi David, It appears we have both been shooting with a Nikon M Plan ELWD 20/0.4 today, so I can appreciate the challenges. My attempts have not proven to be as fine as this one though. I have been trialing an objective that arrived a couple of days ago. You have me intrigued. Would like to see an i...
by dmillard
Mon Aug 18, 2008 6:48 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Vertical stacking set-up
Replies: 15
Views: 8205

Vertical stacking set-up

Vertical set-up with Newport XYZ linear translation stage, for anyone interested.

David

Image
by dmillard
Mon Aug 18, 2008 4:44 pm
Forum: Equipment Discussions
Topic: Macro focus rail
Replies: 33
Views: 9201

Ari -

I just took a couple of quick shots (a storm was blowing in) of the diffusion tent that I put together. Hope the pictures are helpful.

David

Image

Image
by dmillard
Sun Aug 17, 2008 6:39 pm
Forum: Equipment Discussions
Topic: Nikon U10 and U20...
Replies: 30
Views: 16451

On Luminars the scale and pointer are not f/ stops they are Stolze numbers. see Blaker,or Zeiss Luminar literature.) Trivial to the point of pedantry: Luminar lenses are marked in exposure factors, not Stolz numbers. Stolz numbers are derived from the formula (f/#)squared /10, so that f/5.6 would b...
by dmillard
Sun Aug 17, 2008 5:18 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papillio ulysses ("Blue Mountain Swallowtail")
Replies: 4
Views: 2630

Both superb images - Thank you for brightening my Sunday morning!

David
by dmillard
Sat Aug 16, 2008 12:32 pm
Forum: Equipment Discussions
Topic: Macro focus rail
Replies: 33
Views: 9201

Novoflex now has Castle-L and Castle-Q. Castle-Q has a built in Arca clamp, but it's also in the "really rong" orientation. Castle-L can be in any orientation you want. But, as David mentioned, you can get it "off" of straight, and it can also rotate occasionally. I "fixed" this. On my Castle-L, I ...
by dmillard
Sat Aug 16, 2008 12:26 pm
Forum: Equipment Discussions
Topic: Macro focus rail
Replies: 33
Views: 9201

Thank you very much for all the great help with making a decision. I have decided to go with Novoflex cause I like the design and they are well built. I will be taking alot images of flowers out in the field and would like a diffusion tent that would also act like a shield from the wind. Could any ...
by dmillard
Sat Aug 16, 2008 9:37 am
Forum: Equipment Discussions
Topic: Nikon CF N Plan Achromat 10/0.30
Replies: 1
Views: 1561

Nikon CF N Plan Achromat 10/0.30

If anyone is interested, this objective is now up on eBay at:

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... :IT&ih=021

I just bought a similar one (not yet received) from the same seller for $102.50.

David
by dmillard
Sat Aug 16, 2008 9:30 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Butterfly stack
Replies: 9
Views: 3655

Nice images Antonio - excellent composition, and you have succeeded well at capturing the fine detail of the hairs surrounding the head.

David
by dmillard
Sat Aug 16, 2008 7:50 am
Forum: Equipment Discussions
Topic: Scope objective thread sizes
Replies: 26
Views: 15672

Joseph - Thanks for raising the excellent point about the potential effects of optical asymmetry upon exposure when using objectives outside of their nominal magnifications. A few clarifications: Canon lenses are typically 1/3 to 2/3 stops slower than Nikon lenses stamped with the same speed. At f/4...
by dmillard
Fri Aug 15, 2008 9:01 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Vine Sphinx Moth at 20X
Replies: 6
Views: 3809

David, Apart from any pre-stack PP or post stack PP ( but feel free to mention them :D ), what were the settings used in HF in regard to Smoothing and Radius? Craig P.S. I noticed you have 'backed-up' your Nikon M Plan ELWD 20/0.4. Hello Craig - I just used the HF defaults (off the top of my head 8...
by dmillard
Fri Aug 15, 2008 8:56 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Laputa: Castle in the Sky
Replies: 3
Views: 2720

Very nice - I was working on Papilio paris gedensis today using the same lens! (hopefully have some images up tomorrow)
by dmillard
Fri Aug 15, 2008 6:23 pm
Forum: Equipment Discussions
Topic: Scope objective thread sizes
Replies: 26
Views: 15672

Allow me to translate the lens label... 0.13 - NA 0.13 = f3.8 (there are formulas for this stuff) and on the other side: 0 - no cover slide. If this number isn't 0, you can't use it on a bellows I would like to add two caveats to Joseph’s extremely comprehensive and comprehensible explanation of th...