New Addition

by tyronet2000

Latest addition to my "studio" with the K-70 attached. The articulating screen is very useful, saves a bit of backache. Don't need to travel far for "subjects" now either
Liked by  pauljay
Uploaded04/11/2017 - 08:43
CategoryGeneral
Shutter Speed1/5
Aperturef/5.6
LensN/A
ISO800
Focal Length24mm
Unique Views / Likes28/1

GIULIO57
Posted 04/11/2017 - 12:23 Link
Interesting. Are camera and microscope lenses parafocal? I mean: when you are focusing with microscope knobs (micro and macro) can you look at a image at sharp focus on the camera screen and viewfinder? Where did you buy "C" tubes for connecting camera and microscope?
Edited by GIULIO57: 04/11/2017 - 12:25
tyronet2000
Posted 04/11/2017 - 16:25 Link
No it's not parafocal, it's either/or by a pull/push lever. I got the tube and pentax attachment at the same time as the microscope from www.brunelmicroscopes.co.uk. They have new and used equipment for sale and other this such as slides etc., and from what I can see everything to do with this from professional to hobbyist. I was surprised how many of us hobbyists there is out there.
Regards
Stan

PPG
GIULIO57
Posted 04/11/2017 - 16:52 Link
tyronet2000 wrote:
No it's not parafocal, it's either/or by a pull/push lever. I got the tube and pentax attachment at the same time as the microscope from www.brunelmicroscopes.co.uk. They have new and used equipment for sale and other this such as slides etc., and from what I can see everything to do with this from professional to hobbyist. I was surprised how many of us hobbyists there is out there.
Thank for your reply. I gave a look at their site. Interesting. I know those new and used brands: Maiji, Leica. Here in Italy I worked for those brands new models only. I didn't know of this Intl retailer located in England.
Your microscope doesn't bear a label but a few old Olympus show that shape. Glad to read your reply. Remember to use a drop of oil (for miscroscopes) when using 100x lens and always keep it clean otherwise oil makes a "layer"over lens. In this case use xylene and then alchol to wipe this dirty wet layer. Then: magnification factor for each lens is: number on eyepiec x number on lens. Example: 100 x lens allows you to work at least at: 100 x 10= 1000. Anyway max magnif. is: AN (aperture number of lenses) x 500 or 1000 times. This is ABBE formula: so doing you always work inside right resolution without loosing details!!! Magnification factor for camera is different: you ought to know the number on "C" tube. Sorry for my words and I hope you don't offend. By the way: before taking pictures set Koehler illumination of condenser in the right way (using knobs or screws at left right side of condenser). Proper planar illumination is a must for normal routine and pictures as well....
Edited by GIULIO57: 04/11/2017 - 17:12
tyronet2000
Posted 04/11/2017 - 17:29 Link
Thanks Giulio, I know I have a lot to learn but am enjoying it. I can't get out and about as much as I used to but don't have far to go for my "subjects".
Regards
Stan

PPG
PeterKR
Posted 05/11/2017 - 21:18 Link
WOW Stan, this takes me back 50 years to my early days in the metallurgical lab.
The difference there was that they were reflecting microscopes with a small light source on the back and a 45degree mirror, above the eyepiece (which would be replaced by a 4x3 negative plate to record the image once selected and focused).

Have fun with your 'new toy'

Best regards
Peter
Edited by PeterKR: 05/11/2017 - 21:21
tyronet2000
Posted 05/11/2017 - 21:45 Link
Thanks Peter, have also acquired some Pentax bellows M42 and K fit so lots of toys to play with. Will be please when spring arrives and there are lots of "subjects" to work with
Regards
Stan

PPG
leep
Posted 10/11/2017 - 13:18 Link
So now for some interesting super close ones!
tyronet2000
Posted 10/11/2017 - 15:27 Link
leep wrote:
So now for some interesting super close ones!
Ok for pond life. Next year I'd like one of those Stackshot gadgets for the really dramatic stuff. Was looking at 200cm x 200cm images of beetles etc., fantastic stuff but needs a lot of patience.
Regards
Stan

PPG
tyronet2000
Posted 10/11/2017 - 15:31 Link
Fantastic images here. Could be done with a Pentax Hope this is allowed


https://digital-photography-school.com/behind-scenes-marvellous-macro-insect-ima...
Regards
Stan

PPG

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