Search found 1650 matches

by mjkzz
Sat Dec 23, 2023 1:05 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

I am just curious about your way of scaling up and down, etc, not sure what is the point doing that. And I do not understand how you can say "but no data was lost", yet, data are lost and are highly distorted. The choice of algorithm is a good point, that matters a lot! I was referring to our excha...
by mjkzz
Fri Dec 22, 2023 8:57 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Sym P. le wrote:
Fri Dec 22, 2023 7:41 am
Here's me trying to move the slider to zoom in on the stitching. :-?
Try harder :D :D :D j/k

So what are you trying to say? I think I left the zoom slider at 1:1, ie, at that point, it is 100% crop, any more to the + side, you will see pixelization. Hope that is what you were trying to say.
by mjkzz
Fri Dec 22, 2023 8:56 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Have you had a chance to make a comparison of a 10x-upscaled vs 20x? :) I do not see the point of doing that, sorry, you have to enlightening me. :D And I think I did it before anyways just for you :D Ah, I might have missed that though I couldn't find it when looking through the posts right now. B...
by mjkzz
Fri Dec 22, 2023 6:53 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

FotoChris wrote:
Fri Dec 22, 2023 5:36 am
Have you had a chance to make a comparison of a 10x-upscaled vs 20x? :)
I do not see the point of doing that, sorry, you have to enlightening me. :D And I think I did it before anyways just for you :D
by mjkzz
Fri Dec 22, 2023 5:23 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

While making a video about Aurogon lens set, I decided to do a gigapixel of Sunset moth (about 1.12 GP here) that covers about 12mm by 12mm area of the wing, it is somewhat softer on this forum than on my screen, but . . . this is unprocessed because that could ruin stitching. I am pretty convinced ...
by mjkzz
Thu Dec 21, 2023 4:09 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Forgot to mention, those rails used in XY table are very similar to this off the shelve rail from OpenBuilds, a very popular platform for DIY'ers.

Here is final setup
sns_setup.jpg
by mjkzz
Thu Dec 21, 2023 2:48 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

PS. The final image file is so big, Paint.net could not even save it as uncompressed TIFF image!!! TiffError.png the maximum file size for standard TIF files is 4GB. for larger files there is the option of BigTIFF, Adobes Large Document Format (PSB), OpenEXR, PNG, or Jpeg. unfortunately none of the...
by mjkzz
Wed Dec 20, 2023 9:21 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Restacked missing part due to failed SD card using an 80GB CFA card. Horizontal step size (X axis) is 3mm, vertical (Y axis) step size is 2mm, so this means overlap is 16.67%. I am surprised that there is NO stitching problem at all even with small overlap like this. Last time I did this using Mitut...
by mjkzz
Wed Dec 20, 2023 4:35 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

I thought it would be a piece of cake, but the SD card failed during 4,000+ shots that I left over night :( Well, it is 5+ years old and at least 500K shots on it. Salvaged some images from failed card, looking good, no stitching issues (Microsoft ICE) so far, should be able to make giga pixel if co...
by mjkzz
Wed Dec 20, 2023 12:51 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

OK, better quality pattern arrived and it looks good, it has 0.2mm spacing. It is pretty hard to get perfect alignment, so I took the coordinates at L and R point to calculate perfect coordinates at A. Here are calculations (eyeballing all coordinates): L : 12, R : 6, assuming perfect straight line,...
by mjkzz
Fri Dec 15, 2023 1:02 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

OK, got the 0.1mm grid pattern, but yeah, it is made of plastic and line are jagged, broken (red point A). Even that, the worst part I can see is the point B, where the (vertical) gap is widest, its Y axis coordinates are 6307 and 6326, so the gap is 19 pixels. So, assuming the line is not bent due ...
by mjkzz
Tue Dec 12, 2023 2:43 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Oh wow, thanks JKT! I think that table should be saved somewhere here for future reference!!! I have been in "user mode" with Raynox DCR-150, never had 2nd thought about the claimed 4.8 dioptor/208.33mm focal length, till testing Aurogon using it as part of reference. Focal length of 211.43mm (I tak...
by mjkzz
Mon Dec 11, 2023 3:07 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Though I have a hunch that empty magnification is happening, at NA = 0.5, it still feels (subjective) 50x is better :D It has less edgy feel even with a tad sharpening (minimum with Paint.Net). So this was done at 50x 0.5NA "Straight" out of Zerene Stacker 50x05_1.jpg "Processed" -- saturation and c...
by mjkzz
Mon Dec 11, 2023 1:10 am
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

Some variables you didn't mention: Barrell distortion combined with the the length of used measurement line & stacking order. I have some numbers for a few lenses on another computer - I'll post them likely tomorrow. Those are based on a largish number of pairwise measurements and the focal lengths...
by mjkzz
Sun Dec 10, 2023 9:50 pm
Forum: Equipment Discussions
Topic: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens
Replies: 139
Views: 42423

Re: [Hands On] Venus Optics (a.k.a Laowa) Aurogon Macro Lens

While shooting video with 50x, since it is on the camera, I did the same for 50x. Here are the numbers: left (1536, 4249), right (8079, 4242), so total length is 6543.00 pixels long, meaning it is 6543 / 9504 * 35.9 = 24.715mm long. The distance between two red arrows is half of 1mm or 0.5mm, this m...