D***3
发帖数: 12712 | 1 第一次用鱼眼 三阳8mm
感觉锐度/分辨率不如 超广角
这正常么？ |
r*******i
发帖数: 1640 | |
D***3
发帖数: 12712 | 3 全开更不用说
光圈收到f8,f16 锐度还是不如 手动老镜头 凤凰/威达 19-35
【在 r*******i 的大作中提到】
: 这种便宜镜头全开着用就别强求锐度了...
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D***3
发帖数: 12712 | 4 也就一百刀收的
留着？还是退了?
凤凰19mm vs 三阳8mm |
s******e
发帖数: 273 | 5
右边的好像焦没有对上吧。。我看网上评论说用f8还是蛮好的呀。我在Local $50收了
一个，结果发现只能在60D上用，6D上暗角实在太大了。
【在 D***3 的大作中提到】
: 也就一百刀收的
: 留着？还是退了?
: 凤凰19mm vs 三阳8mm
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D***3
发帖数: 12712 | 6 第一次用鱼眼
对鱼眼的成像不了解，不过就是觉得没有凤凰19mm锐
【在 s******e 的大作中提到】
:
: 右边的好像焦没有对上吧。。我看网上评论说用f8还是蛮好的呀。我在Local $50收了
: 一个，结果发现只能在60D上用，6D上暗角实在太大了。
|
D***3
发帖数: 12712 | 7 想知道这些差距是不是因为焦段不同造成的
毕竟差了10mm 如果30mm镜头成像估计会更清晰 |
s******e
发帖数: 273 | 8
你是放在三脚架上用LCD live review模式加放大后微调手动对焦吗？
我觉得鱼眼主要是用来制造特殊的形变从而产生夸张的艺术效果的，锐不是主要的目的。
【在 D***3 的大作中提到】
: 第一次用鱼眼
: 对鱼眼的成像不了解，不过就是觉得没有凤凰19mm锐
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s******e
发帖数: 273 | 9 http://www.photozone.de/canon-eos/526-samyang8f35eos
The lack of AF may be a little tricky on the Samyang 85mm f/1.4 but this is
basically a non-issue on the 8mm f/3.5 Fisheye due to the immense depth-of-
field provided by such a lens - for most scenes just set the focus distance
to 2m and then be happy ever after. If in doubt (e.g. in very close focus
situations) you can, of course, use Live-View to fine-tune the focus
manually. Setting the (working) aperture directly on the lens may also be
something to get used to but it's really an acceptable compromise here.
The Samyang is a fisheye lens and as such the extreme amount of barrel
distortion is actually a feature and not a bug. However, the Samyang is
still a fairly unusual fisheye - it has a near-"stereographic" projection so
its distortion characteristic is actually less extreme at the image borders
compared to conventional fisheye lenses. It's the first of its kind and
Samyang even filed a patent for the design. |
h*********n
发帖数: 11319 | 10 其实鱼眼比广角更容易做锐吧？
的。
【在 s******e 的大作中提到】
: http://www.photozone.de/canon-eos/526-samyang8f35eos
: The lack of AF may be a little tricky on the Samyang 85mm f/1.4 but this is
: basically a non-issue on the 8mm f/3.5 Fisheye due to the immense depth-of-
: field provided by such a lens - for most scenes just set the focus distance
: to 2m and then be happy ever after. If in doubt (e.g. in very close focus
: situations) you can, of course, use Live-View to fine-tune the focus
: manually. Setting the (working) aperture directly on the lens may also be
: something to get used to but it's really an acceptable compromise here.
: The Samyang is a fisheye lens and as such the extreme amount of barrel
: distortion is actually a feature and not a bug. However, the Samyang is
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D***3
发帖数: 12712 | 11 不用纠结了
凤凰确实比三阳锐
看来新镜头不一定比老镜头好 |
D***3
发帖数: 12712 | 12 算了 就一百刀收的也不是很贵
这样我的焦段就差不多齐了
现在包包里有8mm, 19-35mm, 28-70mm, 55-210mm |
s******e
发帖数: 273 | 13
还差大炮。:-)
【在 D***3 的大作中提到】
: 算了 就一百刀收的也不是很贵
: 这样我的焦段就差不多齐了
: 现在包包里有8mm, 19-35mm, 28-70mm, 55-210mm
|
