@Dustin
Thanks for the advice. I did some test shots on the roof of our apartment. I've tested at aperture f2.8 and f5.6 while varying the focusing distance between beyond infinity up to 1 meter. The photos are uploaded to Flickr. There are no extra sharpening or adjustment; only what ever was done during exporting from LR4 to Flickr. All photos are handheld.
http://www.flickr.com/photos/31505768@N08/sets/72157638425870414/
Couple things I've noticed when looking at the apartment windows at the center of the picture:
- at f2.8, none of the pictures are sharp.
- at f5.6, the sharpest is at 3m focusing distance
- at f4.0, the sharpest seems to be right at infinity mark but still not where as sharp as f5.6
- If I want to take stars at night, f2.8 could be a problem.
Should I continue to Now updated test at f4.0?
- How to I get sharper images at f2.8? Is this possible?
- Am I doing something wrong?
I found a website that describes a solution to the focusing issue.
(emadeloc.blogspot.com.es/2013/01/brico-como-calibrar-el-enfoque-de-un.html)
I would assume most of the 14mm users in this forum have seen or even used this fix. Has anyone try to fix the lens themselves? I would like to hear your feedback.
What are your thoughts if I try this fix myself. Does it look like I need it? It seems easy enough even for an amateur like myself.
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BTW, a colleague of my contacted Samyang Optics directly regarding the changes from the gold to red ring. Here is there reply:
문의하신 14mm F2.8 렌즈는 Gold ring에서 Red ring으로 바뀌었으며 렌즈 성능에서는 동일합니다.
(단지 외관에서 Gold ring ==> Red ring으로 변경되었습니다.)
...Google translates
Gold ring 14mm F2.8 lenses, contact your Red ring of the lens performance, the revised and the same.
(Just look at Gold ring ==> Red ring has been changed.)
Basically, the new Samyang 14mm changed from gold ring to red ring and the function is same.
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