Search found 412 matches

by Yawns
Thu Oct 24, 2019 4:31 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

kaleun96 wrote:Thank you for sharing, I really enjoyed that video and the idea is simple but effective!
yes it's brilliant...
I give him the credits for the idea..
I don't know if he has to give the credits to someone else ...

António
by Yawns
Wed Oct 23, 2019 7:50 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

None of the shoes I have can be mounted on a board directly... because the knobs are very big ... In the first version I mounted the shoe on a small piece of wood to raise the shoe and let the knob run free ... But in the second I opened that hole to operate the knob.. only to have back the 5mm heig...
by Yawns
Wed Oct 23, 2019 6:17 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

great idea! and I also like the lighting examples. it would also be easy to mount a rail on that. one thing I would look for is some kind of quick release mechanism for the legs height adjustment, so that the rough adjustment could be done in a second and then fine adjustment with the screws. not e...
by Yawns
Wed Oct 23, 2019 4:08 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

last week I went to visit my sister (more than 200 miles form here) and she has a wood of oaks / chestnuts at her door step... loads of beautiful batches of mushroom , but I was having only the phone... here it's sand and just small patches of pine trees .. can't find many https://live.staticflickr....
by Yawns
Wed Oct 23, 2019 3:56 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

Inovation and improvisation name of the game. When they lead to beautiful shots such as these. lovely and really like this kind of photography. Yes.. some guys are really brilliant... I recently spent like 300 euros on a ground level tripod (Sunwayfoto T1A20) and a low profile ball head, "half-ball...
by Yawns
Wed Oct 23, 2019 3:44 am
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

That's some very expert and creative light editing. Tx.. how wish.. :) It's the Flash / "snooth" ... gotta take many at different flash intensities, distance, angle.. until we get a pleasant one https://live.staticflickr.com/65535/48946595641_92d946d6f2_c.jpg tas a ver by antonio caseiro , on Flick...
by Yawns
Tue Oct 22, 2019 6:19 pm
Forum: Equipment Discussions
Topic: Board "Ground level Tripod" for mushrooms
Replies: 13
Views: 1169

Board "Ground level Tripod" for mushrooms

I saw this video the other day on YouTube and I found his board brilliant... I had to try it and do a quick prototype a few weeks ago... just a board and screws.. and an "Arca" type shoe.. The screws allow for very precise frame adjusting. https://www.youtube.com/watch?v=97hgW9OjgPI&fbclid=IwAR24myB...
by Yawns
Mon Oct 21, 2019 2:43 pm
Forum: Equipment Discussions
Topic: Universal multiple layer "diffuser" ...
Replies: 17
Views: 2739

almost forgot about this thing, as I am running so many things at once... Sent the *.STL files to print ... 4 of them ... 66 Euros after VAT and shipping... I hope to have them this week (or maybe not) 17mm (interior) diameter - For Lomo 3,7x and alike... 27 mm - for Nikon CFI (fit's the samples I h...
by Yawns
Wed Oct 16, 2019 1:48 pm
Forum: Equipment Discussions
Topic: Novoflex stepping motor focusing rack
Replies: 21
Views: 3041

similar to Charles Krebs' invention described years ago on this forum somewhere I think you're referring to the "OlyMinCan", described at https://www.photomacrography.net/forum/viewtopic.php?p=29118#29118 , with example images at https://www.photomacrography.net/forum/viewtopic.php?t=4864 and https...
by Yawns
Wed Oct 16, 2019 1:45 pm
Forum: Equipment Discussions
Topic: Novoflex stepping motor focusing rack
Replies: 21
Views: 3041

No, my plan was to mount the camera normally on the WeMacro mount, and attach a vertical flat aluminum panel on the vertical front piece of the rail. The flat panel would have a hole in it for a lens mount. Generally we don't want to use a regular bellows because that restricts us to using long len...
by Yawns
Wed Oct 16, 2019 1:32 pm
Forum: Equipment Discussions
Topic: Novoflex stepping motor focusing rack
Replies: 21
Views: 3041

.. the lens is fixed, the sensor moves the step...but what about the subject?.. is it fixed too ? Yes, but it helps to have it on a stage for initial focusing and composition. 100mm is a little short for focusing with the bellows. Perhaps having replaceable lens mounting brackets would work. Thank ...
by Yawns
Wed Oct 16, 2019 8:09 am
Forum: Equipment Discussions
Topic: Novoflex stepping motor focusing rack
Replies: 21
Views: 3041

For our uses, the big advantage is the option for rear-standard focus stacking. But I think this could be done with a $2 piece of aluminum plate attached to the front of the WeMacro rail, with a hole in the plate for the lens, and a free bag bellows connecting the rear of the lens to the camera mou...
by Yawns
Mon Oct 14, 2019 4:07 pm
Forum: Equipment Discussions
Topic: in what situations do we need steps as small as 0.3 micron .
Replies: 9
Views: 1552

I saw that complex formula before and I must have a print screen somewhere in my drive... I will put it a Excel sheet and compare the results with the simple one. When checking the numbers, remember that λ / Na ^ 2 gives the two-sided DOF = total distance from front to back of the in-focus slab, wh...
by Yawns
Mon Oct 14, 2019 3:11 pm
Forum: Equipment Discussions
Topic: in what situations do we need steps as small as 0.3 micron .
Replies: 9
Views: 1552

Thank you for your explanation Rick.. In my limited knowledge I could not find a reason... anyway I just go up to small magnification like 10X and with simple achromatic and I don't need such small steps, but I was curious ... António. EDIT: I saw that complex formula before and I must have a print ...
by Yawns
Mon Oct 14, 2019 1:29 pm
Forum: Equipment Discussions
Topic: in what situations do we need steps as small as 0.3 micron .
Replies: 9
Views: 1552

in what situations do we need steps as small as 0.3 micron .

Currently on the market there are automatic rails that declares minimum step values ​​of the order of fractions of microns .. like 0.3 microns .. I also started seeing in some groups "exifs" declaring steps with an accuracy of 1/100 micron, such as step = 0.59 micron (??) .. this is very ]accurate a...