Search found 200 matches

by conkar
Sun Jul 13, 2014 8:31 am
Forum: Equipment Discussions
Topic: New Nikon D810 body to have EFSC
Replies: 10
Views: 3509

. . . Jim Kasson, a very very accomplished and energetic guy (up there in the league with Rik), just posted his conclusion from months of using the Sony A7r (definitely fully AA-less) and D800e side-by-side on the same subjects that he sees no difference whatever in resolution. See: http://www.dpre...
by conkar
Sat Dec 21, 2013 11:12 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Scorpions are easier to stack than spiders! :)
Replies: 10
Views: 4100

As a big fan of old sci-fi movies, I agree with Johan that the last one might be a candidate for a hanger on the Wall. If it was my own picture I probably had brightened it up a little bit and give it a extra push with photoshop before printing.

Grats, to a very well done picture!

Regards,

Conny
by conkar
Tue Nov 19, 2013 10:30 am
Forum: General Discussion Forum and Community Announcements
Topic: Site
Replies: 12
Views: 4093

A very informative and a site with great layout.

Grats, to a great site with a lot of interesting information!

I suppose you've invested much time and effort to build that site.

So good luck with your site and keep up the good work!


Regards,

Conny
by conkar
Fri Sep 13, 2013 2:11 pm
Forum: Equipment Discussions
Topic: Microscope objectives on an DSLR
Replies: 5
Views: 1540

Re: Microscope objectives on an DSLR

Hi there people.. I see a lot of people use microscope objectives on an DSLR. I think the distance to the specimen will be short. Is there any website or a table that can give me the magnification and distance to the specimen ? Like what magnification will I obtain with i.e 4x objective ? And what ...
by conkar
Tue Aug 06, 2013 11:37 am
Forum: Beginners Macro
Topic: Using microscope objective for macro imaging
Replies: 3
Views: 1889

Re: Using microscope objective for macro imaging

[Posting moved to here from Beginners Micro Forum] Hello: I'm thinking of using microscope objectives for macrophotography. Since I'll be using a full-frame DSLR I understand it's preferable to use an infinity-corrected objective to fully cover the frame. My plan is to use a 180mm camera lens as th...
by conkar
Tue Jul 23, 2013 1:22 pm
Forum: Beginners Macro
Topic: Wetzlar 10X HL infinity
Replies: 6
Views: 1995

Re: Wetzlar 10X HL infinity

Having seen some of the superb images posted using a microscope objective fitted on the end of a telephoto lens I am thinking of building a setup to have a go. Does anyone know if a Leitz Wetzlar industrial microscope Lens HL 10x/0.20 infinity would be any good for this application? Any info would ...
by conkar
Wed Jul 03, 2013 12:43 pm
Forum: Equipment Exchange
Topic: Nikon CFI objective Vials
Replies: 6
Views: 1936

Is this issue solved?

I may have some 25mm vails laying around, the best fit are for the CFI LU plans.

They also works ok for the cfi plan achromat 10x na 0.25 (mrl00102), but it's a close fit.

Regards,
Conny
by conkar
Mon Jul 01, 2013 10:11 am
Forum: Equipment Discussions
Topic: help choosing 5x lens
Replies: 18
Views: 6360

Regarding sources, I recently received a positive report of purchasing a 10X Nikon CFI60 objective (MRL00102) through http://www.seoenterprises.com/shop/product.php?productid=16268&cat=257&page=1 . I have no personal experience with SEO Enterprises, but the person who wrote to me reported that "I g...
by conkar
Mon Jul 01, 2013 8:58 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Half Ant Portrait
Replies: 12
Views: 2255

I just fall in with mr Craig Gerard here: This is a very, very good picture! .....some thoughts about lighting, this is a subject that is diffucult to handle in terms of illumination, to much light and you risk to blow out the highlights. An even and well illuminated image. Very well done! I don't k...
by conkar
Thu Jun 27, 2013 12:26 pm
Forum: Equipment Discussions
Topic: help choosing 5x lens
Replies: 18
Views: 6360

To go "better" and to 5x, the objectives get more expensive, such as the Mitutoyo apo 5x NA 0.15 (working distance, from memory about 30mm) Memory failure :o The correct working distance for the 5X Mitutoyo M Plan Apo is 34mm and the na is 0.14 not 0.15. I agree about the Mitutoyo m plan apo 5X na ...
by conkar
Thu Jun 27, 2013 11:38 am
Forum: Equipment Exchange
Topic: Mitutoyo vials
Replies: 5
Views: 2089

I just like to validate that those Mitutoyo M26 vails from Ebay seller ten993046 are as good as the original included Mitutoyo m plan ones. The only difference are that they are black instead of grey and missing the Mitutoyo logo.

Regards,
Conny
by conkar
Sun May 19, 2013 1:24 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Tiny Wasp
Replies: 8
Views: 1445

Jody, Nice stack! I happen to like the colored background. I don't understand Michael's concern about f/2.8. For me, at 5X, f/2.8 is the sharpest setting for my MP-E. This gives an effective aperture about f/16.8, just about ideal for the 1D Mark III's full frame sensor. --Rik I also like the color...
by conkar
Sat May 11, 2013 12:51 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Reduced NA gives more detail
Replies: 38
Views: 14464

I'm struggling to see exactly what you mean. :? In a high-pixel output image, you'd only use the reduced NA parts where it's beneficial. If you used a lower magnification lower NA objective for a web image, and if LoCA reared its head, it might be possible to use PS Blending Modes to combine images...
by conkar
Sat May 11, 2013 12:35 am
Forum: Equipment Discussions
Topic: Big Jansjö's lil bro
Replies: 8
Views: 4573

They are ok and quite handy and could be used in varying situations. Ikea has now stated the Color Temperature to 2700 Kelvin. I think the Color Temperature of the Jansjö's have changed over time. Personally a like to try to raise the Color Temperature in my studio setup lighting. I have looked for ...
by conkar
Thu May 09, 2013 5:51 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Reduced NA gives more detail
Replies: 38
Views: 14464

Um, no, I haven't! Why should reducing the NA lead to CA? I can see it happening due to the iris being in the "wrong" place, perhaps, but not as a result of swapping objectives. It could mean hand-retouching rather than letting the stacker combine images. Longitudinal chromatic aberration. This abe...