Search found 500 matches

by harisA
Sun Apr 15, 2018 5:18 am
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

Is it plastic? One of the components is usually plastic To be so sharp in a single image with 10X objective (first post), this object must be very flat. I am starting to think this must be some sort of ink pattern on a document, but I cannot match it with any type of document that I know. --Rik The...
by harisA
Sat Apr 14, 2018 10:00 am
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

I didn't mean USA only.I wanted to say that this industry has an enormous size of several hundred billions $ in US market.Of course there are corresponding industries all over the world with significant size.

No these images have nothing to do with leds.
by harisA
Mon Apr 09, 2018 11:41 am
Forum: Equipment Discussions
Topic: Choosing a Nikon lens for insects but on budget
Replies: 6
Views: 1623

You should also consider Oshiro 60mm for 130$-170$ depending on your location. https://www.photomacrography.net/forum/viewtopic.php?t=36348&postdays=0&postorder=asc&highlight=oshiro&start=0 It's a manual focus lens.Also you must be aware that Nikon D3200 is not supporting auto exposure with manual l...
by harisA
Sun Apr 08, 2018 2:00 am
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

Ok I will provide some more help. This is a very common household item which is ''connected'' with a very powerful industry (hundreds of billions $) only in USA. A more ''representative'' display of it's microstructure is shown in the image below. http://www.photomacrography.net/forum/userpix/1778_d...
by harisA
Mon Apr 02, 2018 2:11 am
Forum: Equipment Discussions
Topic: Nikon Plan Apo 4X/0.20 vs 5x Mag.x LD Plan APO Test
Replies: 6
Views: 1805

Thanks for this comparison. First impressions: 1)Both lenses are nearly equal in terms of contrast and resolution with the exception of corner performance where mag.x is a clear winner. 2)The previous wafer (used in the comparison of mag.x vs mits 5x) is better for testing purposes since there are m...
by harisA
Sun Apr 01, 2018 2:12 am
Forum: Equipment Discussions
Topic: Mitutoyo M Plan APO 5x Vs Mag.x 5x LD-Plan APO Test
Replies: 20
Views: 4515

WOW I can't remember seeing before such a striking difference between two lenses on the higher end spectrum. The superiority of Mag.x is clear even by looking the your low resolution images posted here. If you test the Nikon CFI 4X/0.2 against the MAG.X it would be better to use the same 250mm tube ...
by harisA
Thu Mar 29, 2018 4:55 am
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

I can't remember when was the last time I ate a Ferrero Roche.This is a much more common household item.
by harisA
Wed Mar 28, 2018 1:21 pm
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

Nope is not a keypad membrane
by harisA
Wed Mar 28, 2018 12:31 pm
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

Clearly an organic structure with regularly repeating units meaning that we are looking at a colonial animal. That lowers the possible cast to bryozoan and corals. The series of vertical scratches suggests that this is a fossil specimen which has been polished, but the fine polishing has not been t...
by harisA
Tue Mar 27, 2018 10:55 am
Forum: Photography Through the Microscope
Topic: Photo quiz-image added
Replies: 21
Views: 4852

Photo quiz-image added

This maybe proved a bit difficult so I will provide gradual help depending on the guesses.

Image

This is a single image (no stacking) with a 10x objective using epi brightfield illumination with cross polarizers.
by harisA
Wed Mar 14, 2018 11:55 am
Forum: Equipment Discussions
Topic: Need Advice for Using Orthoplan for Microscopy
Replies: 3
Views: 905

You can start by reading the following article:
https://www.microscopy-uk.org.uk/mag/ar ... _Ver_4.pdf

There is a separate chapter inside dedicated to photography.
by harisA
Wed Mar 14, 2018 11:46 am
Forum: Equipment Discussions
Topic: Oshiro 60mm 2:1 macro lens excessive pincushion distortion.
Replies: 4
Views: 1118

Thank you.
by harisA
Tue Mar 13, 2018 8:27 am
Forum: Equipment Discussions
Topic: Oshiro 60mm 2:1 macro lens excessive pincushion distortion.
Replies: 4
Views: 1118

Thank you Enrico. My samples are from a full frame camera.I don't remember reading about this issue anywhere.Also in the following thread from Robertotoole: http://www.photomacrography.net/forum/viewtopic.php?p=225757&sid=601a75fe05bab520291278a93c6b1cd0 the Oshiro images are free from this distorti...
by harisA
Tue Mar 13, 2018 6:35 am
Forum: Equipment Discussions
Topic: Oshiro 60mm 2:1 macro lens excessive pincushion distortion.
Replies: 4
Views: 1118

Oshiro 60mm 2:1 macro lens excessive pincushion distortion.

Today i receive an oshiro 60mm lens bought in near mint condition from eBay. The lens exhibits severe pincushion distortion even on aps sensor .With full frame camera the problem is even worst. It seems that this happens with all magnifications. Some photo samples from a full frame camera 1x http://...