Search found 500 matches

by harisA
Mon Oct 30, 2017 9:31 am
Forum: Photography Through the Microscope
Topic: Auliscus Oamaruensis incident light + stereo
Replies: 18
Views: 3036

Really amazing images ,but UMplanfl 100x has a working distance of 0.31mm.
How its possible to illuminate the specimen with a ping pong diffuser?
by harisA
Fri Oct 27, 2017 6:00 am
Forum: Photography Through the Microscope
Topic: A comparison between different illumination methods.
Replies: 10
Views: 1264

Thank you Marek. JohnyM asked my opinion about epi-microscopy with organic woody speciments. Here are a series of images of insects eggs. These are single images (no stacking) without any post processing except resizing. 1)Brightfield http://www.photomacrography.net/forum/userpix/1778_eg1bf_1.jpg 2)...
by harisA
Fri Oct 20, 2017 2:57 am
Forum: Photography Through the Microscope
Topic: It has been a long time...
Replies: 7
Views: 885

Thank you Carlos
by harisA
Fri Oct 20, 2017 2:57 am
Forum: Photography Through the Microscope
Topic: A comparison between different illumination methods.
Replies: 10
Views: 1264

Pau:Thank you for your kind words.Althought the microscope is equipped with polarizers I haven't use them for these BF images.Also no wave plate. JohnyM:If you have long working distance objectives then the best method to illuminate your specimens is to use external light source with a diffuser like...
by harisA
Thu Oct 19, 2017 8:43 am
Forum: Photography Through the Microscope
Topic: A comparison between different illumination methods.
Replies: 10
Views: 1264

Your images are very nice quality, but i dont see that much difference between those techniques. Im in a process of buying upright epi-microscope for photography of seeds and upper surface of in-vitro breed plants. Have you tried those with this kind of subject? These may not the best examples to u...
by harisA
Thu Oct 19, 2017 5:49 am
Forum: Equipment Discussions
Topic: Best value used DSLR for microscope
Replies: 22
Views: 3367

An important factor is the coverage (image circle) of your current objectives.Old objectives have very small image circles which can't cover an APS sensor.You can get a rough idea by using a piece of white paper above the trino head and measure the diameter of the light spot.
by harisA
Thu Oct 19, 2017 4:28 am
Forum: Photography Through the Microscope
Topic: A comparison between different illumination methods.
Replies: 10
Views: 1264

A comparison between different illumination methods.

I took these images with the purpose of making a brief comparison between different epi illumination methods. These were taken during servicing an old Zeiss Axioplan microscope which was used for wafer inspection back in the late eighties.I have difficulty to achieve uniform DIC illumination. 1)EPI ...
by harisA
Thu Oct 19, 2017 4:15 am
Forum: Photography Through the Microscope
Topic: It has been a long time...
Replies: 7
Views: 885

Thank you Marek.
by harisA
Thu Oct 19, 2017 4:14 am
Forum: Photography Through the Microscope
Topic: Mosquito wing
Replies: 10
Views: 1283

Stunning images Charles. What is the magnification of the first two?
by harisA
Wed Oct 18, 2017 1:27 pm
Forum: Photography Through the Microscope
Topic: It has been a long time...
Replies: 7
Views: 885

Mike:This is watch jewel. DIC makes little artificial ruby to stand out with a beautiful deep pink color.

Charles:Thank you for kind words.
by harisA
Wed Oct 18, 2017 8:39 am
Forum: Equipment Discussions
Topic: OLYMPUS 20X LMPlan 0.40NA Inf./0 good with tube lens
Replies: 7
Views: 1942

This is a very good quality (plan fluor) objective with nice coverage (aps sensor) and great working distance. To obtain 20x magnification you will need a lens of 180mm focal length.This will also work fine with a 135mm lens on m4/3 sensors.
by harisA
Wed Oct 18, 2017 7:08 am
Forum: Photography Through the Microscope
Topic: It has been a long time...
Replies: 7
Views: 885

It has been a long time...

It has been a long time since my last image posted in this forum.I 've started to believe that my photo productivity is inversely proportional to microscope stuff I collect over the years (but this is another story).The following image is made using epi dic illumination with zeiss equipment. http://...
by harisA
Fri Oct 06, 2017 2:17 am
Forum: Photography Through the Microscope
Topic: Vorticella (with the new Sony A9)
Replies: 17
Views: 3128

Excellent images but I 'm very curious to know how the camera is focusing by itself.Are you using an af telephoto lens as tube lens? A photo of your setup will be very explanatory. Also do u use A9 in crop mode?
by harisA
Fri Sep 22, 2017 3:40 pm
Forum: Photography Through the Microscope
Topic: crystallization of Paracetamol.
Replies: 17
Views: 1992

Nice 3d effect. Did you use a dedicated oblique light condenser like lomo or just filter ''stops'' under the condenser?
by harisA
Thu Sep 21, 2017 5:25 pm
Forum: Photography Through the Microscope
Topic: It has been a while... Here is my watch up close
Replies: 18
Views: 3779

acceptable loss/gain for a high end mechanical watch movement is -/+4 seconds per day
For a high end quartz watch -/+2sec per month!

A Grand SeiKo can achieve +/-10sec per year.