Search found 110 matches

by Len Willan
Thu Jun 04, 2020 11:24 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Vespid wasp
Replies: 3
Views: 600

Michael, Thanks for the information on your diffusing dome. I will try and get my mind around making a copy, I am referring to your descriptions given here, The dome provides soft wrap-around light I am able to shoot between f8 and f11, so I get to use the sweet spot in the lens resolution and pick ...
by Len Willan
Wed Jun 03, 2020 3:57 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Vespid wasp
Replies: 3
Views: 600

Thank you Michael, Congratulations, and for sharing your work, This illustrates the New Era of Taxanomic detailing, along with your Black Carpenter Ant https://www.photomacrography.net/forum/viewtopic.php?t=41787 Gone are the days of using such tedious equipment as microscope drawing tubes, Looking ...
by Len Willan
Sun Mar 01, 2020 1:22 pm
Forum: Equipment Discussions
Topic: Gear repair
Replies: 5
Views: 783

Hello Pitufo, You are very fortunate of being in the UK, where for 400 years the standard repair for a stripped Brass Wheel and Steel Pinion is to rebush the wheel. Here is a link on rebushing, parts easily available in your part of the world https://www.google.com/search?as_q=&as_epq=Bushing&as_oq=...
by Len Willan
Mon Feb 03, 2020 9:49 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Weevil eye/scales
Replies: 10
Views: 2202

Congratulations Robert on your work using infinite micro lenses, All are impressive You have now used a Kenko AC CLOSE-UP No.5 on this, https://www.photomacrography.net/forum/viewtopic.php?p=254265&highlight=#254265 You have previously used a Raynox 150 in you other work. What are your comparisons b...
by Len Willan
Fri Sep 20, 2019 6:28 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: dorsal view
Replies: 10
Views: 2043

Hello proullard, This is the way that that I photograph Pinned Entomological Specimens Horozontal. View topic - PHOTOGRAPHING PINNED INSECT SPECIMENS https://www.photomacrography.net/forum/viewtopic.php?t=37215&highlight= This is a very safe method, as opposed to any Vertical Set Up. Regards, Len
by Len Willan
Sat Apr 27, 2019 3:10 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Crocoite
Replies: 10
Views: 2314

Your photograph shows great skill and interest in the subject Here is the current history of one the crocoite mines. The Dundas Extended Mine has been mined by Mike and Eleanor Phelan since the mid-1980s — but its origins date back to 1892, when it was used as a prospecting tunnel to look for silver...
by Len Willan
Tue Apr 02, 2019 11:52 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fly - stereo composite
Replies: 17
Views: 3892

Taxanomic Entomology at it's very best,

Congratulations.
by Len Willan
Sun Feb 24, 2019 12:37 am
Forum: Equipment Discussions
Topic: RMS extension tube - sourcing
Replies: 12
Views: 3359

Canon made a series of M39 Flocked extension tubes that were used with a Leitz mount, they could be suitable
Check it out here
Using Wemacro 46C Clamps to hold Infinite Tube Lens
http://www.photomacrography.net/forum/v ... highlight=
by Len Willan
Sun Jan 13, 2019 5:06 pm
Forum: Equipment Discussions
Topic: Using Wemacro 46C Clamps to hold Infinite Tube Lens
Replies: 0
Views: 3001

Using Wemacro 46C Clamps to hold Infinite Tube Lens

Canon made a series of M39 Flocked extension tubes that were used with a Leitz mount http://www.photomacrography.net/forum/userpix/675_CANON_TUBE_infinite_1.jpg A set made up for a tube lens that can use dioptres such as Raynox, Kenko, Sigma LSA, and other appropriate close up lenses. [/img] http://...
by Len Willan
Thu Nov 29, 2018 3:08 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Insect examination/posing/microscope stages
Replies: 28
Views: 18209

A Simple Horizontal Rig for Pinned Insects Posted: Tue Dec 08, 2009 http://www.photomacrography.net/forum/viewtopic.php?t=8722&highlight= Its pivoting “Stick Pin Sleeve”was made from a cheap kitchen cupboard spring loaded Ball Catch ,which has been drilled to accept a tube from a hypodermic needle. ...
by Len Willan
Tue Nov 27, 2018 3:56 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Insect examination/posing/microscope stages
Replies: 28
Views: 18209

Another simple solution The articulated ball jointed specimen rack can been turned to an upright position for safe mounting of the specimen, and then locked when returned to the Horizontal position Refer to the series of images here PHOTOGRAPHING PINNED INSECT SPECIMENS http://www.photomacrography.n...
by Len Willan
Sun Nov 18, 2018 5:08 pm
Forum: Equipment Discussions
Topic: Canon 250D close up lens as a tube lens
Replies: 8
Views: 1673

Thank you Rik and Lou for your explanations. There seems to be advantages in weight and the easy use of Achromatic close up lenses that can be used on any assembly as this was shown by Robert O'Toole in his extensive tube lens tests, and his use of the Sigma LSA, so the quest is to find other availa...
by Len Willan
Sun Nov 18, 2018 3:07 pm
Forum: Equipment Discussions
Topic: Canon 250D close up lens as a tube lens
Replies: 8
Views: 1673

Another choice?

It would be interesting to see opinions on this closeup lens used with infinites like the Nikon 10X MRL 00102 , This was posted by Miljenko Comparing macro lenses using MTF - Part VII - Tube lenses http://www.photomacrography.net/forum/viewtopic.php?t=38202&postdays=0&postorder=asc&highlight=itl+200...
by Len Willan
Fri Nov 02, 2018 3:06 pm
Forum: Equipment Discussions
Topic: Long M39 Extension Tubes
Replies: 2
Views: 1180

Thank you Robert for your comments "one one of my favourite Tubes My present choice is based on an old Leitz Helecoid and its tube system, now interchange with various camera bodies http://www.photomacrography.net/forum/userpix/675_Long_Tubes_1.jpg RH Side Reversed 50 mm El Nikkor Centre LEICA visof...
by Len Willan
Thu Nov 01, 2018 8:45 pm
Forum: Equipment Discussions
Topic: Long M39 Extension Tubes
Replies: 2
Views: 1180

Long M39 Extension Tubes

Image

Long M39 Extension Tubes
Canon Made sets of internally Flocked 75 and 200mm M39 Leica Thread Tubes.
I have no idea of their original purpose, but they seem to have potential again, as suggested.
Comments welcomed,
Len