Samyang 7.5mm Micro 4/3 Pano Samples

[badders]

We just received our first batch of Samyang 7.5mm lenses so here's a very quick couple of test panoramas for you:

http://www.360tacticalvr.com/showcas.../reception.htm
http://www.360tacticalvr.com/showcas...de/outside.htm

Both examples shot with an Olympus E-P3 on a Nodal Ninja 3 Pano Head with the T-30 adaptor. I turned off Image Stabilisation and shot at f/11 for both examples. Focus was set to just a tad back from infinity. Stitching in PTGUI Pro 9.1 Beta2 and test web pages also made from PTGUI.

Shooting sequence was 4 around @ -15 degs plus 1 up @ 90 degs.

You can download the source files (which include the original images from camera, the stitched equirectangular and the PTGUI project files) here:

http://www.360tacticalvr.com/showcas...ion/source.zip (76.8 MB)
http://www.360tacticalvr.com/showcas...ide/source.zip (78.9 MB)

You can also see photos I took of the camera with both Black and Silver lenses mounted, along with shots of the E-P3 and lens mounted on the Nodal Ninja 3 used to make the panos here:

http://flic.kr/s/aHsjweGpLf

(Note: I just spotted something strange on the ceiling of the "reception" shot. Looks like PTGUI has done something odd with the tiles...)

[Vincèn]

it looks to be pretty sharp in result :)

[hindenhaag]

Thx for sharing Andrew.

This is a nice combination concerning size and weight. The lens is like a tennis ball. Will work great on top of the pole.

Settings seam to be LRS around 49 and URS 63 taken from your pics.

Heinz

[badders]

I'll re-check the settings today and will publish for the NN3, NN4 and M1-S. I'm not sure yet what the optimum is for aperture and focus positions.

[KG]

I did some testing on the Aperture settings before shooting my second test, and found quite a difference in quality when changing Aperture.

Here is a sample, the only difference is 1/2 F stop.

At F 8 it looks like this (300% crop):



And at F 9.5 like this:

[badders]

Very interesting. Over on the Panoguide forum Smooth is saying the lens should be set to f/5.6 or f/8 but looking at this and the other images I've seen from Hans it looks like a higher f stop is giving better results.

What distance away were those books?

[KG]

What distance away were those books?

Appr. 1.2 m / 4 ft


Karel

[DemonDuck]

badders RE: Reception

I don't see anything weird in the ceiling tiles.

What are those ghost reflections off the lights in the ceiling? Think it's from the translucent mirror?

[badders]

I don't see anything weird in the ceiling tiles.

What are those ghost reflections off the lights in the ceiling? Think it's from the translucent mirror?

I don't think the E-P3 has a translucent mirror. I think it's because this was shot @ f/11. I'm testing the lens today @ f/5.6, f/8 & f/11 to see which works best.

[DemonDuck]

I don't think the E-P3 has a translucent mirror. I think it's because this was shot @ f/11. I'm testing the lens today @ f/5.6, f/8 & f/11 to see which works best.

I thought that was part of the ceiling. Oh right, this is Olympus. Sorry. Got a NEX fixation. Yeah, could be lens flare.

[badders]

OK I think I've got this nailed now. Shooting @ f/5.6 seems to give the best results. I've tweaked the position on the NN3 so here's the settings for an Olympus Pen E-P3 with the Samyang 7.5mm on a NN3 using the T-30 Mount (reversed):

LRS: 46
URS: 63

Here's something for a bit of fun - shot in JPEG using the ART Filter - Dramatic:

http://www.360tacticalvr.com/showcas...tside_art.html

I'm getting great stitch results with 4 shots around @ -15 degs plus 1 x zenith @ 90 degs.

[badders]

Here's another sample. i couldn't position the camera at the same place indoors as the reception area was closed and the lights were off. So this is near the entrance and I shot 5 x bracket exposures @ 1ev and ran them all through PTGUI:

http://www.360tacticalvr.com/showcas.../entrance.html