I'm using the sel1018 with a7 I'm FF mode. Never used the 10-20 before. Hmm. I use the panorama function and hugin to stitch my panos. I suppose you are doing manual stitching?
UWA for A7(R) ?
- Thread starter jennzhen
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I'm using the sel1018 with a7 I'm FF mode. Never used the 10-20 before. Hmm. I use the panorama function and hugin to stitch my panos. I suppose you are doing manual stitching?
maybe you can try shoooting pano with A7 in crop mode, distortion shld be much better controlled and you still get 15/16mm equivalent UWA perspective. I doubt the auto pano function saves in full resolution right
This is also another possible solution, though I would lose alot of megapixels (24->9) if I shoot in crop mode. The auto pano would retains the pixel information even after stitching the images to create an ultra mega pixel image. :embrass:
I'll probably need to do my own custom lens profile calibration and see if it helps, else it's back to the shopping cart to hunt for another UWA lens.
This is also another possible solution, though I would lose alot of megapixels (24->9) if I shoot in crop mode. The auto pano would retains the pixel information even after stitching the images to create an ultra mega pixel image. :embrass:
I'll probably need to do my own custom lens profile calibration and see if it helps, else it's back to the shopping cart to hunt for another UWA lens.
if you have the sony playmemories lens compensation app, the distortion can be corrected to a certain degree within camera.
Do you have a NEX?
Saves a lot of headache of using APS-C lens on full-frame, having to deal with distortion beyond what was originally designed.
SEL1018 produces great result on NEX for me, I doubt A7 can top that given that the lens was not designed for FF.
Saves a lot of headache of using APS-C lens on full-frame, having to deal with distortion beyond what was originally designed.
SEL1018 produces great result on NEX for me, I doubt A7 can top that given that the lens was not designed for FF.
This is also another possible solution, though I would lose alot of megapixels (24->9) if I shoot in crop mode. The auto pano would retains the pixel information even after stitching the images to create an ultra mega pixel image. :embrass:
I'll probably need to do my own custom lens profile calibration and see if it helps, else it's back to the shopping cart to hunt for another UWA lens.
yeap. pair the sel10-18 with the a6k or nex 7 and you have 24 megapixels with a UWA perspective.
i am still evaluating my sel 10-18 vs the samyang 14 2.8 i just got and my old timer canon 16-35 hehe
if 16-35 do the job I think 10-18 and 14mm can side line
I am thinking of getting the Tamron 17-35 seems bang for bucks...
if 16-35 do the job I think 10-18 and 14mm can side line
16-35 does the job but if you are a pixel peeper, not good enough.
10-18 is a great travel uwa. small, with AF and can use filters easily. distortion a little harder to correct, still looking for the appropriate acr/lightroom profile.
14mm is sharp edge to edge, distortion correctable with acr/lightroom. just less flexible as it is a prime, and sometimes 14mm can be a little too wide.
currently i still like the 10-18 alot. 14mm will be brought out for dedicated landscape / fireworks type of shots. 16-35 will live on my 5D3 hehe when i need uwa for canon
Lightroom actually has a lens compensation profile for this lens, but its meant for crop sensors only.
sony playmemories app can correct the distortion to a certain degree direct in camera, which makes it possible for you to use the panoramic stitching function in camera, which i understood was what you wanted to use right?
i managed to find some user uploaded SEL10-18 A7 full frame Light room profiles. tried on some shots and seems to work decently. will upload later.
links for download from 2nd last reply
http://www.dpreview.com/forums/thread/3579675?page=2
some before and after correction shots. my impression is that it works very well for 16-18mm corrections. decent for 12-13mm. need to try at more focal lenghts when free
before - 12mm
after - 12mm
before - 18mm
after - 18mmm
before - 12mm
after - 12mm
before - 18mm
after - 18mmm
another few
18mmm before correction
18mmm after correction
random shot from today after correction 18mmm
18mmm before correction
18mmm after correction
random shot from today after correction 18mmm
The distortions are mostly ok in those photos (without correction), only the 3rd set need correction I think.
What I don't like is the light fall-off, makes the sky looks uneven.
What I don't like is the light fall-off, makes the sky looks uneven.
Thanks for this lens profile recommendation. It's much better than the 1 I currently have. Now my panos have much lesser errors.
That's the issue with most UWA lenses even those SLR lenses I have suffers from it. I guess that the downside of using FF O.O
You might have mixed up the before/after.
But I think the results are pretty clear.
TFS
Clouded by Silvialite, on Flickr
4 image panorama at 14mm. Foreground was not stitched properly and is subsequently cropped off
Although there may not be too many fans of the CV15 uwa lens being used on the 7/7R, this link for a LR preset might be helpful to those who are using it.
http://www.dpreview.com/forums/post/52919116
A quick test shot from my flat's window earlier (except for a little perspective correction, the rest are unedited):
After applying the LR preset:
Though not perfect, the preset as is works well enough for a simple hobbyist like me. A few more adjustments should make it even better. Looking forward to the author's next improved version, if any.
http://www.dpreview.com/forums/post/52919116
A quick test shot from my flat's window earlier (except for a little perspective correction, the rest are unedited):
After applying the LR preset:
Though not perfect, the preset as is works well enough for a simple hobbyist like me. A few more adjustments should make it even better. Looking forward to the author's next improved version, if any.
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