Search found 195 matches

by kaleun96
Mon Jun 24, 2019 12:38 am
Forum: General Discussion Forum and Community Announcements
Topic: Robert OToole
Replies: 31
Views: 5559

Glad you're doing better Robert, hopefully it's a speedy recovery!
by kaleun96
Sat Jun 22, 2019 1:29 pm
Forum: Equipment Discussions
Topic: Polaroid 43.53mm F/6.6
Replies: 22
Views: 6918

Did anyone end up testing those 36.6mm f4.9 lenses? I did this stack of a (dusty) ladybug with the 43.53mm today as I was having trouble finding a good lens at the needed magnifcation. Turned out alright but I need to work on the lighting for the next one. http://www.photomacrography.net/forum/userp...
by kaleun96
Wed Jun 19, 2019 5:18 am
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7395

dickb wrote:Cameron, how do you intend to use your XNP 23/1.4 (no longer 4.0)? Just with extension or with a tube lens?
Likely a tube lens such as the Redrock Micro 5x. It's a decently high magnification but I think I've pushed the 23/1.4 to about 6.5x or 7x already without issue. Super small DOF though.
by kaleun96
Tue Jun 18, 2019 6:03 am
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7395

Anyway, the only way I see for removing the stop at the moment is drilling it out, either to the desired size directly or completely and replacing it with another one of the desired size. So perhaps I should go and test my regular 23/1.4 to see what the ideal size is and then drill the f/4.0 stop o...
by kaleun96
Wed Jun 12, 2019 1:06 pm
Forum: Equipment Discussions
Topic: Removing Nikon objective from mount
Replies: 9
Views: 1049

Thanks for the info. I ran a quick 3 image stack with the Nikon vs an Olympus UIS Plan 10x 0.25. Not going to get into 100% crops and pixel peeping here but the Olympus clearly has better contrast but I think the Nikon may just win out in sharpness. Some of the dust grains are a bit fuzzy and with p...
by kaleun96
Wed Jun 12, 2019 7:47 am
Forum: Equipment Discussions
Topic: Removing Nikon objective from mount
Replies: 9
Views: 1049

Got it undone! Bought some adjustable pliers and wrapped the objective in the silicone rubber. Surprisingly it came undone very easy, guess I was just missing the extra grip the pliers provide over a smooth-faced handvice. Does anyone know much about this objective by the way? Haven't come across an...
by kaleun96
Mon Jun 10, 2019 1:58 pm
Forum: Equipment Discussions
Topic: Removing Nikon objective from mount
Replies: 9
Views: 1049

Thanks will order a strap wrench! Though I'm starting to have my doubts. I managed to get a great grip between the vice and silicon rubber but it eventually tore. I think the objective has to be cemented in - surely they can't have tightened it with a tool that much without worrying about over-threa...
by kaleun96
Mon Jun 10, 2019 11:20 am
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7395

dolmadis wrote: If the disk creating f4 can be removed then it will need to be replaced with one for f2.
Yeah and I'm not sure where I can source a suitable f2 or so disk for this without making one myself. Open to suggestions.

The price on the outlet3d.eu website is $20USD plus $13USD shipping to Sweden for me.
by kaleun96
Mon Jun 10, 2019 11:17 am
Forum: Equipment Discussions
Topic: Removing Nikon objective from mount
Replies: 9
Views: 1049

Removing Nikon objective from mount

I got this Nikon EPI E Plan 10x 0.25 WD 12.5 infinity objective off eBay recently. The glass looks good but I can't test it as it's attached to a cylinder barrel of some kind. The barrel had 4 screws and a small flange "holding" in the additional glass at the end of the cylinder barrel but this glas...
by kaleun96
Mon Jun 10, 2019 11:08 am
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7395

I've been a fan of this little lens! Bought one from outlet3d last year and noticed it performed well reversed and stacked.

I've just bought a second to see if the aperture disk can be modified and opened up. BTW the f4 version from eBay is cheaper on their website but perhaps the shipping is more.
by kaleun96
Sat May 25, 2019 4:48 pm
Forum: Equipment Exchange
Topic: Looking for a Nikon 5X MM objective
Replies: 6
Views: 1909

These are really good. It is important to use exactly the right extension, which may vary slightly depending on the version. Getting it wrong will increase purple fringing. I recall someone (was it you?) testing how slight changes in extension can have a big effect on this and the conclusion being ...
by kaleun96
Sat May 25, 2019 8:56 am
Forum: Equipment Exchange
Topic: Looking for a Nikon 5X MM objective
Replies: 6
Views: 1909

by kaleun96
Mon May 13, 2019 6:43 am
Forum: Equipment Discussions
Topic: Motor Controller Project
Replies: 59
Views: 11357

Sped up the acceleration and deceleration profiles with some other parameters/setups I'm working on and move 1 meter in ~25 seconds. The motor is quite throughout the entire range and it's sitting on a cardboard sounding box. :shock: Here's a video showing the performance, the camera was 300~400mm ...
by kaleun96
Fri May 10, 2019 11:11 pm
Forum: Equipment Discussions
Topic: Motor Controller Project
Replies: 59
Views: 11357

Well let's just say a stand alone 400 step motor transitioning 1000mm, yep 1 meter, in less than 50 seconds including a very long and precise velocity profile for start and stop allowing the same precision and vibration reduction as shown in the 800X video :D Probably 1/3~1/4 the time taken up with...
by kaleun96
Fri May 10, 2019 1:56 pm
Forum: Equipment Discussions
Topic: Motor Controller Project
Replies: 59
Views: 11357

The properly configured (not optimized though, so maybe more room) TMC5130 can run so fast I won't even post it, as you wouldn't believe me :shock: And it's quite and accurate....not a bad combination IMO How fast are we talking? Just curious as I've had to order in some new pulley wheels to change...