Search found 600 matches
- Tue Aug 28, 2018 10:51 am
- Forum: Equipment Discussions
- Topic: (LSA || DCR150 || ITL200) ? FF : CROP
- Replies: 58
- Views: 5517
I'd like to reinforce what Jorgen said about focal length vs format size. If you are happy with a given objective on a tube lens of focal length 200mm on APS, you will get exactly that same image, with same corner quality, filling the FF sensor if you use change to a tube lens of 300mm. I am using ...
- Sat Aug 11, 2018 11:41 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Scotch Thistle
- Replies: 5
- Views: 1253
- Thu Aug 09, 2018 7:55 am
- Forum: Equipment Discussions
- Topic: Tube Lens Test With MITUTOYO 5X M Plan APO
- Replies: 66
- Views: 9640
I hope this question doesn't take the thread off topic, if it does I'll gladly start a new thread. It should be an easy one to answer by those more versed in tube lenses than I: is image circle affected by the tube lens or is it dictated by the objective? From my experience, it's affected by both. ...
- Wed Aug 08, 2018 6:46 pm
- Forum: Equipment Discussions
- Topic: Tube Lens Test With MITUTOYO 5X M Plan APO
- Replies: 66
- Views: 9640
That little lens continues to amaze. I've finished up shooting two big tests that I haven't published yet. 17 lenses at 2.1x and 8 lenses (5 lenses and 3 objectives) at 3x. Can you guess the top lens in each of those? It took a NA0.20 objective to beat the Minolta, it beat a Nikon Objective and was...
- Wed Aug 08, 2018 6:00 pm
- Forum: Equipment Discussions
- Topic: Tube Lens Test With MITUTOYO 5X M Plan APO
- Replies: 66
- Views: 9640
Hello Robert, Just another confirmation - I saw your earlier thread about the 6.7X magnification you got when setting up the ITL200 following Thorlabs' diagrams, and ran a test this afternoon using this tube lens in both orientations with a 10X Mitty. I got 9.9X using it in both directions. This may...
- Thu Jul 12, 2018 5:06 am
- Forum: Equipment Discussions
- Topic: New controllers and setups from Ukraine
- Replies: 11
- Views: 3575
- Mon Jul 09, 2018 7:20 am
- Forum: Equipment Discussions
- Topic: A great price for a compact high CRI LED panel!
- Replies: 2
- Views: 698
A great price for a compact high CRI LED panel!
I just ordered a couple, but there were still six left ; )
https://www.ebay.com/itm/Cineo-Lighting ... 2381196389?
https://www.ebay.com/itm/Cineo-Lighting ... 2381196389?
- Fri Dec 29, 2017 8:26 am
- Forum: Equipment Discussions
- Topic: Inexpensive dark field adapter
- Replies: 8
- Views: 1511
Nice and effective! How do you illuminate the mirror?, maybe with a ring of light from the rear of the subject (what's called a Lieberkühn reflector)? Thanks Pau. I used a pair of Novoflex Macrolight Plus lights, with Vivitar 183 flashes. See here Nice picture and thanks for the idea! I like the bl...
- Thu Dec 28, 2017 12:48 pm
- Forum: Equipment Discussions
- Topic: Inexpensive dark field adapter
- Replies: 8
- Views: 1511
Inexpensive dark field adapter
A quick and easy “dark field” adapter made from a solar cigarette lighter, readily available on eBay for just a few dollars (see for example here ). I removed the metal coil, and cut a plastic vial to reach the position at which the end of the cigarette would rest in the coil (the focus of the parab...
- Wed Nov 02, 2016 6:18 am
- Forum: Photography Through the Microscope
- Topic: insects
- Replies: 23
- Views: 1919
- Tue Nov 01, 2016 9:15 pm
- Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
- Topic: Keratella quadrata?
- Replies: 9
- Views: 7618
- Tue Nov 01, 2016 10:04 am
- Forum: Equipment Discussions
- Topic: Mitutoyo 5x Plan Apo vs Nikon Plan Apo 4x/0.20
- Replies: 5
- Views: 831
- Tue Nov 01, 2016 6:32 am
- Forum: Equipment Discussions
- Topic: very long working distance macro
- Replies: 15
- Views: 2986
One reason that I wanted to start with the 600 mm f/4 lens is that after extension I will still only be at an effective f-stop of f/8 at 1X. The big process lenses are typically f/9 to start with which will take me to f/18 effective so I worry about diffraction. That said, I bought a 610mm apo nikk...
- Sun Oct 30, 2016 3:08 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Immature anthers in semi-dissected floret
- Replies: 10
- Views: 1639
- Sun Oct 30, 2016 2:59 pm
- Forum: Photography Through the Microscope
- Topic: Wandering Mestra egg
- Replies: 11
- Views: 867