Search found 500 matches

by harisA
Thu Nov 30, 2017 2:54 am
Forum: Equipment Discussions
Topic: Flange Mod for use with Nikon 1.4TC
Replies: 30
Views: 3401

Thank you Rik for clearing this.It's obvious that a low magnification microscope objective (1x-2x) has no lack compared with a macro lens at same magnification. Not to mention the small image circle these objectives always have.
by harisA
Wed Nov 29, 2017 12:59 pm
Forum: Equipment Discussions
Topic: Camera ranking for microscopy use
Replies: 6
Views: 1160

Hello Des. To me the best camera is the one that suits best to the rest of your setup. To be more specific: 1)If you are not using flash then you definitely need an efcs camera or you must somehow mount the camera without contact with the trino head., 2)No microscope objective (with the exception of...
by harisA
Mon Nov 27, 2017 12:38 pm
Forum: Equipment Discussions
Topic: Flange Mod for use with Nikon 1.4TC
Replies: 30
Views: 3401

Think the calculated NA is incorrect. NA~1/(2*F) for small NA, thus NA~0.1786 about twice 0.089. Also I assume you are referring to green wavelength which is ~0.55um, not 550um, which should actually be 550nm. So the resolution predicted by the Rayleigh Criterion is ~1.88um! Best, Mike From WiKi. "...
by harisA
Mon Nov 27, 2017 6:01 am
Forum: Equipment Discussions
Topic: Flange Mod for use with Nikon 1.4TC
Replies: 30
Views: 3401

Sorry if this is a bit off topic but I was ready to ask why someone would use a T/C with printing nikkor. Then I decided to do the math by myself: Printing nikkor has a f number of 2.8 This equals to a NA of 0.0.089 I used the following formula: NA=M/Sqrt(4*f^2*(M+1)^2+M^2) where M=magnification=1 a...
by harisA
Sat Nov 25, 2017 11:29 am
Forum: Equipment Discussions
Topic: "X-ray" lenses for 1x-5x
Replies: 35
Views: 11233

Thank you Klaus.I'm looking forward for these heligon manuals.
by harisA
Mon Nov 20, 2017 4:30 am
Forum: Photography Through the Microscope
Topic: Mosses
Replies: 14
Views: 1498

Excellent images
by harisA
Fri Nov 17, 2017 6:02 am
Forum: Equipment Discussions
Topic: Photolithography lenses + astro cameras = extreme macro
Replies: 20
Views: 2787

Hello Lou. Did you try 436nm or 546nm version?Just for reference I think you must post a single color image (no stacking)
thank you in advance

Haris
by harisA
Thu Nov 16, 2017 8:40 am
Forum: Equipment Discussions
Topic: Photolithography lenses + astro cameras = extreme macro
Replies: 20
Views: 2787

Lou many thanks for sharing these information with us. Personally I would like to see how these lenses rendering colors (I know that they are optimized for single wavelength use) but there is always the possibility to be acceptable since you are actually using a tiny central segment of a huge image ...
by harisA
Wed Nov 15, 2017 3:26 am
Forum: Photography Through the Microscope
Topic: Voracious creature....
Replies: 3
Views: 697

Voracious creature....

Nikon plan apo 20x with polarizers and delay plate.


Image[/i]
by harisA
Tue Nov 14, 2017 3:33 am
Forum: Photography Through the Microscope
Topic: Velcro
Replies: 8
Views: 1134

Waldo this may reveal more information under polarized light.
by harisA
Mon Nov 13, 2017 4:55 am
Forum: Administrator's Appreciation Gallery...Macro and Close-up Images
Topic: Chip Image in QFN Package
Replies: 36
Views: 20011

Your chips semiconductor photos are among the best I have ever seen. Which 4X Inf. 0.1NA objective was used for this photo? Does it cover the FF sensor of D800?
by harisA
Thu Nov 09, 2017 3:04 am
Forum: Equipment Discussions
Topic: Mitutoyo 10x 0.28 - damaged?
Replies: 25
Views: 2271

It is called condensation.Put the objective on a warm and dry place (35c).You can use some silica gell inside a jar.Leave it at least 24 hours.You will be probably ok.
by harisA
Wed Nov 01, 2017 12:30 am
Forum: Equipment Discussions
Topic: "X-ray" lenses for 1x-5x
Replies: 35
Views: 11233

HarisA, your second shot shows very nice color, at least at this reduced magnification. What lens is that taken with? Maybe some of these lenses are color-corrected. Maybe the TV versions? If you blow up the sharp part of that image (the lips, it seems), are color aberrations visible? Lou these are...
by harisA
Tue Oct 31, 2017 11:23 am
Forum: Equipment Discussions
Topic: "X-ray" lenses for 1x-5x
Replies: 35
Views: 11233

Yes, by all means, you (and anyone else) are welcome to post images on this thread, and to post any information about specific "x-ray" lenses. I would love to see this thread become a central repository for everything we can learn about these seductive lenses. Thank you Lou. These lens are actually...
by harisA
Tue Oct 31, 2017 6:51 am
Forum: Equipment Discussions
Topic: "X-ray" lenses for 1x-5x
Replies: 35
Views: 11233

You have a nice collection of really exotic glass here. I 'm also a fan of x-rays lenses and I have done several attempts to adapt them to various cameras: https://petapixel.com/2016/02/13/50mm-f0-75-x-ray-lens-into-worlds-fastest-e-mount-glass/ It is difficult to impossible due to very short workin...