T*******m 发帖数: 27308 | 1 美国这个地方吧,什么都好,就是转基因食品太多!
生活在美国,如果你不想吃转基因食品,那也不是不可能,但还是有相当难度的。我本
人不是研究转基因的专家,但对转基因却非常关心。美国超市里有转基因食品上市了,
方舟子和崔永元又打起来了,这样的时候,我都要跑去看看热闹。美国政府在2015年初
批准转基因苹果(北极苹果)在美国上市之后,我过段时间就去超市转一圈,很想亲眼
看看转基因苹果是什么样子,但到目前我还没有见过转基因苹果,更没有吃过转基因苹
果。我等得都有点急了。现在中国国内有句讽刺人的话:你就是吃转基因的命,操转基
因的心!我还真是这样的人。
转基因食品是否安全?对这个问题,挺转派(主要是农业生物公司和很多学生物的人)
和反转派(主要是有机农业及部分追随者)争得不可开交。我个人认为,目前市场上的
转基因和非转基因食品对健康的影响没有区别,两者一样安全或者说一样不安全。那我
认为转基因安全的依据是什么呢?我很朴素的想法是这样的。很多转基因作物就是在其
基因组里转入其他物种(如细菌)的基因。这些转基因作物到人的肚子里都被消化了。
譬如说,我每天都喝一杯酸奶,里面的细菌不知有千千万万几个亿,我... 阅读全帖 |
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h*******e 发帖数: 8370 | 2 对于同一个镜头,同一个对焦距离:
看sensor(底片)上的景深是一样的。
看扩印到同大的print上出来的景深是不一样的。crop的浅,ff的大
对于同一个构图(即同等效焦距)
sensor上的景深也是不一样的,crop的大,ff的浅——这个跟大中画幅比135更浅的道
理是一样的
扩印到不等大比例一致的print上的景深也是不一样的,crop的大,ff的浅。道理同上。
扩印到等大print上,这个差距被缩小了,要计算一下。个人估计仍旧是crop的大(可
以想想DC的4X6 print)。但是最好还是拿景深公式算一下,看看DOF是不是和幅面线性
相关。如果是线性就是一样的。
关于距离窗的问题,实际上因为等效焦距变长了,在同样大print、同样距离的情况下
,crop的景深会浅一些。
如果是退后,实际上我们讨论的就是在同等效焦距下的问题了。这个不大适用于距离窗。因为距离窗表示的是你和被摄物体之间的距离,这是一个绝对值。距离窗上的景深表示的是这个距离,这支镜头,用ff拍摄,洗成4X6(?)的景深。你用crop相机,读取的还是这支镜头在这个距离洗成4x6的景深,所以标注的bracket应该大 |
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d******a 发帖数: 32122 | 3 http://www.mirrorlessrumors.com/pentax-mirrorless-system-with-u
(UPDATED with lens specs) Pentax mirrorless system with ultratiny sensor (5.
6x crop)!
Pictured above. The old analogue Auto 110.
-
It’s not a secret anymore that Pentax will announce their new mirrorless
system in March (Updated, it’s May!) And as Mr. Hamada from Hoya-Pentax
said a while ago: “we would like to release products with an individuality
that shines through“.
The biggest challenge for all mirrorless system is to find the... 阅读全帖 |
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m********l 发帖数: 6748 | 4 5D Mark II的用户,正常点的不会用JPG直出,原因大家都知道。不过,当用Adobe
Lightroom处理RAW的时候,很多用户却被蒙蔽了真相。这一点,以前在E-M5出来的时候
,我以为是Adobe对E-M5的支持问题,因为用Adobe Standard camera profile,会导致
在Lightroom中处理的图像丢失细节。所以英国的高人Colin做的E-M5的Huelight
profile,在Lightroom中就十分完美的解决了这个问题。 我后来给Colin发信,问他能
否也做一下无敌兔的profile,他后来就做出来,我于是就抛弃了Adobe内置的那些
profile,感觉舒服多了。
那么对无敌兔而言,Huelight profile好在哪里呢?因为Lightroom缺省的profile同样
会造成细节丢失,即使你用大量的后期处理,你的起点就已经被模糊了,还指望自己注
意到那些细节是否被还原吗? Huelight profile的好处就在这里了。下面是我在
Lightroom 5.2中只使用缺省profile和Huelight profile,没有其他任何后期... 阅读全帖 |
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G*********s 发帖数: 6786 | 5 t’s virtually impossible to provide a complete list of genetically modified
food (GM food) in the United States because there aren’t any laws for
genetically modified crops!
Some estimates say as many as 30,000 different products on grocery store
shelves are "modified." That's largely because many processed foods contain
soy. Half of North America's soy crop is genetically engineered!
Rapeseed - Resistance to certain pesticides and improved rapeseed cultivars
to be free of erucic acid and glucos... 阅读全帖 |
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l******a 发帖数: 16364 | 6 我以前查过,转基因就不能称为有机。
GMO Food: Genetically-modified organisms. This refers to the act of
scientifically modifying the genetic structure of an organism. The resultant
organism will have specifically defined characteristics. This is frequently
done with seeds for crops. In the U.S., most of our soybeans, corn, cotton,
and canola are genetically modified. Recently, the U.S. allowed GMO alfalfa
to be planted without restriction. The genetically modified seeds can be
patented. After all, the research to... 阅读全帖 |
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h***a 发帖数: 312 | 7 http://www.aaemonline.org/gmopost.html
https://www.youtube.com/watch?v=eeW5yUSqdhY
American academy of enviromental medicine
Genetically Modified Foods
According to the World Health Organization, Genetically Modified Organisms(
GMOs) are "organisms in which the genetic material (DNA) has been altered in
such a way that does not occur naturally."1 This technology is also
referred to as "genetic engineering", "biotechnology" or "recombinant DNA
technology" and consists of randomly inserting geneti... 阅读全帖 |
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n**e 发帖数: 2026 | 8 今年初,美国科学促进会(AAAS)和皮尤研究中心(Pew Research Center)联合公布
的一项调查显示,88%的科学家认为转基因食品可安全食用,持这一看法的公众只有37
%。报告认为差距如此之大的一个可能原因是,三分之二的公众认为科学家对转基因食
品的健康后果没有清晰认识。这就是真正的原因吗?
根据报告全文,皮尤中心给19,984名科学家发出了调查问卷,3748人(18.8%)完成了
问卷调查。其中生物医学学科背景的科学家占50%。报告没有说明50%的生物医学背景是
否能够代表科学家总体的学科构成。更大问题是在这50%的科学家人群中,有多少人的
工作是与转基因作物的研究有关,以什么样的方式相关。报告没有提供任何信息。
由于这些关键信息缺失,88%的科学家相信转基因安全的说法毫无意义。在一个没有代
表性并且无法排除偏向性的样本中调查,科学家相信转基因安全从1%到99%与88%没有任
何不同。好消息是超过半数的美国民众认为转基因不安全。
2012年10月,美国科学发展协会以官方名义(Board of Directors )抛出了一个反对
转基因标识声明(附录1)。目的就是诱导民... 阅读全帖 |
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s**********e 发帖数: 2888 | 9 found an interesting article:
One of the favourite arguments of the pro-GM lobby in support of Bt-toxin GM
crops is that the Bt toxin has been safely used for decades by organic
farmers.
Many thanks to Susan Pusztai for the following information which precisely
delineates the very considerable differences between the use of Bt in
organic farming and the use of the Bt toxin as a transgene in GM crops.
This should be read in conjunction with Arpad Pusztai's recent comments,
posted to the ngin list... 阅读全帖 |
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n**e 发帖数: 2026 | 10 【 以下文字转载自 WaterWorld 讨论区 】
发信人: nile (nile), 信区: WaterWorld
标 题: 美国科学促进会《科学》大旗下的转基因谎言
发信站: BBS 未名空间站 (Fri Oct 30 10:18:45 2015, 美东)
今年初,美国科学促进会(AAAS)和皮尤研究中心(Pew Research Center)联合公布
的一项调查显示,88%的科学家认为转基因食品可安全食用,持这一看法的公众只有37
%。报告认为差距如此之大的一个可能原因是,三分之二的公众认为科学家对转基因食
品的健康后果没有清晰认识。这就是真正的原因吗?
根据报告全文,皮尤中心给19,984名科学家发出了调查问卷,3748人(18.8%)完成了
问卷调查。其中生物医学学科背景的科学家占50%。报告没有说明50%的生物医学背景是
否能够代表科学家总体的学科构成。更大问题是在这50%的科学家人群中,有多少人的
工作是与转基因作物的研究有关,以什么样的方式相关。报告没有提供任何信息。
由于这些关键信息缺失,88%的科学家相信转基因安全的说法毫无意义。在一个没有代
表性并且无法排除... 阅读全帖 |
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h***a 发帖数: 312 | 11 来自主题: Medicalpractice版 - GMO http://www.aaemonline.org/gmopost.html
https://www.youtube.com/watch?v=eeW5yUSqdhY
American academy of enviromental medicine
Genetically Modified Foods
According to the World Health Organization, Genetically Modified Organisms(
GMOs) are "organisms in which the genetic material (DNA) has been altered in
such a way that does not occur naturally."1 This technology is also
referred to as "genetic engineering", "biotechnology" or "recombinant DNA
technology" and consists of randomly inserting genet... 阅读全帖 |
|
h*****9 发帖数: 6643 | 12 http://finance.yahoo.com/news/Bayer-to-pay-750M-in-genetic-apf-
LITTLE ROCK, Arkansas (AP) -- German conglomerate Bayer CropScience agreed
Friday to pay up to $750 million to settle several lawsuits with U.S.
farmers who claimed a strain of the company's unapproved genetically
modified rice contaminated the food supply and hurt their crop prices.
The litigation goes back to 2006, when Bayer disclosed that an experimental
strain of genetically altered rice was found in U.S. food supplies. No huma... 阅读全帖 |
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z**n 发帖数: 22303 | 13 就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候,欧
美传来消息:转基因食品作物造成健康危害和生态危害。
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候
,欧美传来消息:转基因食品作物造成健康危害和生态危害。
[1] 英国媒体报道说,调查报告指出,因足够量食用了从美国进口的含有转基因成
分的儿童食品,英国儿童出现了足够严重的“hyperactive”病变【按:一般翻译为多
动症】。按照美国卫生部门的定义,“hyperactive”属于神经过敏类型的“超动”病
态,即肢体发生超常运动而患者失去了控制力。可见,转基因食品中的转基因毒素成分
可进入人体并发挥作用(包括对人类神经系统的破坏作用)。
可见,中国农官所谓的转基因食品“安全”和“没有食品安全问题报告”等言论,
都是假话。
[2] 路透社报道,美国科研调查报告指出,美国玉米产区发生了非常严重的作物损
害情况,成因是转基因玉米的抗虫作用丧失,害虫具有了“抗体”能力而可继续破坏玉
米作物。对此,孟山都公司已经承认并同意要拿出解决问题方案。
其实,数年前,美国反思转基因商业化的时候,美国相关... 阅读全帖 |
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z******i 发帖数: 986 | 14 说到大豆,中国也就进口了130亿美元的美国大豆,仅仅只占中美贸易总额6000亿美元
的2.1%, 其实也就是中国进口各种洋垃圾120亿美元的水平。 然而,在实在找不出什
么东西能堵一下别人嘴的时候,就把这130亿挂在嘴上反反复复的说是核武器,似乎这
个东西一抛出来就会炸毁美国,吓瘫华尔街,就会让华盛顿顷刻间投降。
事实上,美国大豆年产量42亿蒲式耳, 中国买了10.8个蒲式耳,只占美国产量的 25.7
%,总共贸易收入也就130亿,还是中国支付给控制贸易的几大粮商的成交金额。而农民
实际卖給粮商的金额,中间还经过了若干二道贩子。所以,实际种植大豆的农民拿到手
里的钱,要比这个130亿少很多。 要不这些年的产区价格就可以说明一切。
Farm price for soybeans:
2012 crop year average: $14.40 per bushel
2013 crop year average: $13.00 per bushel
2014 crop year average: $10.10 per bushel
2015 crop ye... 阅读全帖 |
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f**********r 发帖数: 18251 | 15 【 以下文字转载自 Military 讨论区 】
发信人: zoun (Konchog Gyamtso), 信区: Military
标 题: 直言了:转基因危害儿童,英国认账了!zt
发信站: BBS 未名空间站 (Tue Sep 17 10:53:57 2013, 美东)
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候,欧
美传来消息:转基因食品作物造成健康危害和生态危害。
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候
,欧美传来消息:转基因食品作物造成健康危害和生态危害。
[1] 英国媒体报道说,调查报告指出,因足够量食用了从美国进口的含有转基因成
分的儿童食品,英国儿童出现了足够严重的“hyperactive”病变【按:一般翻译为多
动症】。按照美国卫生部门的定义,“hyperactive”属于神经过敏类型的“超动”病
态,即肢体发生超常运动而患者失去了控制力。可见,转基因食品中的转基因毒素成分
可进入人体并发挥作用(包括对人类神经系统的破坏作用)。
可见,中国农官所谓的转基因食品“安全”和“没有食品安全问题报告”等言论,... 阅读全帖 |
|
f**********r 发帖数: 18251 | 16 【 以下文字转载自 Military 讨论区 】
发信人: zoun (Konchog Gyamtso), 信区: Military
标 题: 直言了:转基因危害儿童,英国认账了!zt
发信站: BBS 未名空间站 (Tue Sep 17 10:53:57 2013, 美东)
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候,欧
美传来消息:转基因食品作物造成健康危害和生态危害。
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候
,欧美传来消息:转基因食品作物造成健康危害和生态危害。
[1] 英国媒体报道说,调查报告指出,因足够量食用了从美国进口的含有转基因成
分的儿童食品,英国儿童出现了足够严重的“hyperactive”病变【按:一般翻译为多
动症】。按照美国卫生部门的定义,“hyperactive”属于神经过敏类型的“超动”病
态,即肢体发生超常运动而患者失去了控制力。可见,转基因食品中的转基因毒素成分
可进入人体并发挥作用(包括对人类神经系统的破坏作用)。
可见,中国农官所谓的转基因食品“安全”和“没有食品安全问题报告”等言论,... 阅读全帖 |
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z*********n 发帖数: 94654 | 17 哈哈,这个周末打开电梯,打开收音机听日常新闻节目啥的
大家都在quote斯坦佛的一个study,结论是,有机蔬菜和普通蔬菜对人体好坏无影响
连农药残余的区别都可以忽略不计
小资们,这可咋办啊,还去不去whole foods啦?
google organic food就可以出来很多网站转载这个new study
Yes, organics is a $29 billion industry and still growing. Something is
pulling us toward those organic veggies that are grown without synthetic
pesticides or fertilizers.
But if you're thinking that organic produce will help you stay healthier, a
new finding may come as a surprise. A new study published in the Annals of
Internal Medicine fin... 阅读全帖 |
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M*****5 发帖数: 3990 | 18 see what FDA says...
How will the radiation affect fish and seafood that have not yet been fished
or harvested?
The great quantity of water in the Pacific Ocean rapidly and effectively
dilutes radioactive material, so fish and seafood are likely to be
unaffected. However, FDA is taking all steps to evaluate and measure any
contamination in fish presented for import into the US.
Steam with radionuclide contamination disperses in the air and deposits on
water/ground surface. Over how wide an area ... 阅读全帖 |
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H**********y 发帖数: 7928 | 19 大上周去日本超市,看到生鱼片明显没人买了,都降价了。
我。。。。。。也没敢买 :(
see what FDA says...
How will the radiation affect fish and seafood that have not yet been fished
or harvested?
The great quantity of water in the Pacific Ocean rapidly and effectively
dilutes radioactive material, so fish and seafood are likely to be
unaffected. However, FDA is taking all steps to evaluate and measure any
contamination in fish presented for import into the US.
Steam with radionuclide contamination disperses in the air and deposits on
w... 阅读全帖 |
|
R******d 发帖数: 5739 | 20 对科技产物怀疑没错, 要求政府监督也没错, 但政府的插手很多时候是在有严重问题
时才出现, 就如FDA的形成。 这是对错很难确定, 因为插手多对工业是一种阻碍,
少是对消费者的不负责。 至于GMO, 这个录像不能让我相信GM农作物比一般杂交农作
物更有危害。 这个录像中提到的所谓实验没有提到任何数据, 出处, 有没有在PEER
REVIEW杂志发表过, 上来就说是有这么个实验。 比如说印度农民自杀的事。 在
WIKI上挖一下,
http://en.wikipedia.org/wiki/Farmers%27_suicides_in_India
quote
GM crops
There have been claims of genetically-modified (GM) seeds (such as Bt cotton
) being responsible for the farmer suicides.[26][27][28][29] A short
documentary by Frontline (U.S. TV series) suggested that farme... 阅读全帖 |
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w***s 发帖数: 7132 | 21 pick-your-own网站上搜来的。不过,看下面一个农庄的网页上写:
No pick-your-own peaches, but a fair supply each day this week that we have
picked -- read more below
CAUTION!!! All of our local peach growers have less than a 5% crop this
year. Anyone selling "Hill Country" or "Fredericksburg" peaches anywhere
other than at a permanent grower stand is most likely an imposter!
Marburger Orchard
11 reviews Rating Details
Category: Fruits & Veggies [Edit]
559 Kuhlmann Rd
Fredericksburg, TX 78624
(830) 997-9433
http://www.m... 阅读全帖 |
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z*********n 发帖数: 94654 | 22 哈哈,这个周末电视台,电台老听到大家在讲这个最新的study,
结论是:科学无法验证有机蔬菜比普通蔬菜对人更好
最多可能农药残余更小,但是这个差别也无证据显示有啥重要影响
最后一个法宝,就是全人类的角度了,organic gardening,对环境影响比较小,run
off农药化肥比较少,对周围的大江大河有好处...
所以,农友们,改用化肥就用吧,哈哈哈,特别责任感强的,关注全人类的,少用点吧
:D
http://www.npr.org/blogs/thesalt/2012/09/04/160395259/why-organ
Yes, organics is a $29 billion industry and still growing. Something is
pulling us toward those organic veggies that are grown without synthetic
pesticides or fertilizers.
But if you're thinking that organic produce will help you stay... 阅读全帖 |
|
k****t 发帖数: 12697 | 23 DOF在幅面大的机器上要浅, 这个概念导致了有些人认为在FF 的镜头用在CROP 机器上,
如果在DISTANCE SCALE 上MARK DOF, DOF BRACKET 要比原来FF 的BRACKET 大. 其实
这是不对的.CROP 的机器与FF 比, 同一个镜头在相同的对焦距离, 景深更小. CROP
SENSOR 实际上就是FF 中间挖一块出来, BLOW UP 到原尺寸, 当然景深变的更浅. DOF
在幅面大的机器上要浅的概念, 是基于用同样视角的镜头, 比方35MM 机用50MM 跟
MEDIUM FORMAT 用8,9十MM 同样标头比, 而不是同一枝镜头在不同FORMAT 上比.
现在大家DSLR了, FF 的镜头通用到CROP上, 原来的概念就有点不一样了. MPPMZX, 下
面三个图:
都是85/1.8, 用F1.8 拍. FF 是无地图, CROP 是40D. 片子统一DOWN SAMPLE 到
1500X1000 (如果对这有疑问请先GOOGLE DOF 的定义, 及模糊圈,观看距离等概念). 角
上的糖果是用来HELP确KEEP SAME FRAMING的 |
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k**o 发帖数: 3006 | 24 ☆─────────────────────────────────────☆
kitkat (kitkat) 于 (Tue May 4 13:54:30 2010, 美东) 提到:
DOF在幅面大的机器上要浅, 这个概念导致了有些人认为在FF 的镜头用在CROP 机器上,
如果在DISTANCE SCALE 上MARK DOF, DOF BRACKET 要比原来FF 的BRACKET 大. 其实
这是不对的.CROP 的机器与FF 比, 同一个镜头在相同的对焦距离, 景深更小. CROP
SENSOR 实际上就是FF 中间挖一块出来, BLOW UP 到原尺寸, 当然景深变的更浅. DOF
在幅面大的机器上要浅的概念, 是基于用同样视角的镜头, 比方35MM 机用50MM 跟
MEDIUM FORMAT 用8,9十MM 同样标头比, 而不是同一枝镜头在不同FORMAT 上比.
现在大家DSLR了, FF 的镜头通用到CROP上, 原来的概念就有点不一样了. MPPMZX, 下
面三个图:
都是85/1.8, 用F1.8 拍. FF 是无地图, CROP 是40D. 片子统 |
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c********e 发帖数: 1740 | 25 除了1200mm,可能Canon SX40的840mm是第二了。没考证,请指正。
不过这不要紧,关键他很轻。以前钓鱼是带328+2X太累了,满手鱼腥,还得去持小炮。
累,累,累。
三百多刀的小炮和540IS+1.4要比比。
SX40 28-840mm VS 40D+540IS+1.4
条件:都是400ISO,SX40手持,540IS 上豆袋,没有任何PS和调节,
Vulture 540IS
Vulture 540IS---100%crop
Vulture SX40IS
Vulture SX40IS---100%crop
Sparrow 540IS
Sparrow 540IS---100%crop
Sparrow SX40IS
Sparrow SX40IS-100%crop
令人惊奇的digital zoom,大约 50X
Sparrow SX40-DZ
Sparrow SX40-DZ 100%crop
其他片子,都是一天拍的,只缩小,少量锐化,无他
结论:SX40在除了体积和便携以外,完败。但画质可以接受,特别是考虑便携时。 |
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m********l 发帖数: 6748 | 26 机身5DII,图片40%大小,中心大图是100%
f1.4
f1.4
上图center crop 100%
f1.4
上图center crop 100%
f1.4
f4
f4
f1.4
f1.4
上图center crop 100%
f4
上图center crop 100%
f1.4,光线不好的室内
上图center crop 100% |
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m********l 发帖数: 6748 | 27 机身5DII,图片40%大小,中心大图是100%
f1.4
f1.4
上图center crop 100%
f1.4
上图center crop 100%
f1.4
f4
f4
f1.4
f1.4
上图center crop 100%
f4
上图center crop 100%
f1.4,光线不好的室内
上图center crop 100% |
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d**********n 发帖数: 3634 | 28
Alright time for some EDUKASION~
Canon DSLRs such as T3i have what's called a "crop sensor", and cameras like
the 5D Mk 3 have "full frame sensors." Full frame sensors are 1.6 times
bigger than crop body sensors, so with the same 50mm lens, the full frame
will capture more of the field of view compared to the crop body. see
picture:
As you can see, the full frame 5D captured a bigger area due to the bigger
sensor.
Now, here's hgow it matters to you. A 50mm on a full body is what most
people con... 阅读全帖 |
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c*****e 发帖数: 757 | 29 佳能的4K现在都是点对点的resolution,不能实现超采。也就是说像素越少,crop越小。
这也就是为什么1DX2的4K可以做到1.4的crop,5D4只能是1.78的crop。5DSII如果达到
60M的像素,crop会怎样不得而知。。。
对于大多数拍摄题材,特别是这种高像素机型擅长的风光题材,我觉得尼康和sony这种
翻转屏使用起来更方便些。旋转屏的优势大概在自拍。
哈哈
crop |
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f**********r 发帖数: 18251 | 30 【 以下文字转载自 Military 讨论区 】
发信人: zoun (Konchog Gyamtso), 信区: Military
标 题: 直言了:转基因危害儿童,英国认账了!zt
发信站: BBS 未名空间站 (Tue Sep 17 10:53:57 2013, 美东)
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候,欧
美传来消息:转基因食品作物造成健康危害和生态危害。
就在中国农官再次鼓吹转基因食品作物如何“安全”和如何“先进”的神话的时候
,欧美传来消息:转基因食品作物造成健康危害和生态危害。
[1] 英国媒体报道说,调查报告指出,因足够量食用了从美国进口的含有转基因成
分的儿童食品,英国儿童出现了足够严重的“hyperactive”病变【按:一般翻译为多
动症】。按照美国卫生部门的定义,“hyperactive”属于神经过敏类型的“超动”病
态,即肢体发生超常运动而患者失去了控制力。可见,转基因食品中的转基因毒素成分
可进入人体并发挥作用(包括对人类神经系统的破坏作用)。
可见,中国农官所谓的转基因食品“安全”和“没有食品安全问题报告”等言论,... 阅读全帖 |
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l****p 发帖数: 27354 | 31 美国NAS相对权威的报告,我来两个摘要里面的片段。说明,该报告就有关人体健康的
结论是,未发现对人体健康有损害。算是有关转基因作物的最乐观的一个大方面。
有关增产的:
There is disagreement among researchers about how much GE traits
can increase yields compared with conventional breeding. In addition to
assessing detailed surveys and experiments comparing GE with non-GE
crop yields, the committee examined changes over time in overall yield per
hectare of maize, soybean, and cotton reported by the U.S. Department of
Agriculture (USDA) before, during, and after the switch from co... 阅读全帖 |
|
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c**i 发帖数: 6973 | 33 (1) 默瑟-, 澳议员呼吁阻止中国公司收购农田. VOA Chinese, June 30, 2011.
http://www.voanews.com/chinese/news
/20110630-China-Foreign-Investment.html
, which is translated from
Phil Mercer, Australia Urged to Protect Key Farmland from Foreign Buyers.
VOA, June 30, 2011.
http://www.voanews.com/english/news
/asia/Australia-Urged-to-Protect-Key-Farmland-from-Foreign-Buyers-124765804.
html
Quote:
"The Chinese state-owned mining company Shenhua Watermark Coal has purchased
large areas of coal-rich farmland in New South ... 阅读全帖 |
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c*****a 发帖数: 1238 | 34 恩道尔:拜耳的农业公司与死去的鸟儿
恩道尔
拜耳的农业公司与死去的鸟儿
德国化学巨头拜耳农业再一次因为把具有高度毒副作用的化学制剂投放市场而遭炮轰。
此前美国和德国有关当局对拜耳进行过调查,事由为整群蜜蜂神秘离奇死亡事件,是否
与拜耳公司最畅销杀虫剂有关。目前荷兰科学家正在研究欧洲鸟类的大量减少的原因。
最大嫌疑对象是一种革命性新式杀虫剂——系列型杀虫剂,名称为新式烟酰。拜耳公司
的下属分公司“农作物科学”公司(CropScience)是领军生产者;这家公司也是拜耳
公司负责转基因的分部。
荷兰的朱特芬(Zutphen)的实验毒理学服务处进行的检测指出,一种名为新烟酰的较
新杀虫成份可导致鸟类和昆虫大量死亡,而蜜蜂更容易受到伤害,如果属实,这将不仅
仅是让是爱鸟、爱蜜蜂者伤感而已,这是一场大灾难。
近年来欧洲各地都观察到鸟类大量减少。许多鸟类数量锐减,其中包括家雀、楼燕和八
哥。自从1977年以来,英国的家雀数量已经减少68%。楼燕 仅从1994年来就减少了41%
,八哥减少了26%。同样的事情也发生在森林鸟类和农村鸟类身上。[1]
朱特芬研究的主持人是汉克;腾尼克斯,最近有新作发表,... 阅读全帖 |
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O*******d 发帖数: 20343 | 35 Rape (Brassica napus) and turnip rape (B. campestris) plants are members of
the Cruciferae family. The name is derived from the Latin rapum, meaning “
turnip,” to which these plants are closely related. The aerial portions of
rape plants have been bred to produce oilseeds, fodder, and vegetable crops.
Rapeseed is small, round, and usually black, although varieties with yellow
seed coats are also grown.
The seeds contain over 40% oil. Rapeseed contributes approximately 10–12%
of the world's total... 阅读全帖 |
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I********l 发帖数: 8702 | 36 传统玉米(以及大豆)的价格要高于转基因玉米(以及大豆)的原因在于需要单独的认
证体系。
Adoption of GM crops has been so widespread that the bulk handling
facilities that had earlier been set up for non-GM crops are now used
primarily for GM crops. This means that non-GM crops must now be handled in
a way that preserves identity and which is significantly more expensive than
the bulk handling system (Lin, Chambers, & Harwood, 2000; Bullock &
Desquilbet, 2002).
References
Bullock, D.S., & Desquilbet, M. (2002). The economics of non-GMO seg... 阅读全帖 |
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I********l 发帖数: 8702 | 37 传统玉米(以及大豆)的价格要高于转基因玉米(以及大豆)的原因在于需要单独的认
证体系。
Adoption of GM crops has been so widespread that the bulk handling
facilities that had earlier been set up for non-GM crops are now used
primarily for GM crops. This means that non-GM crops must now be handled in
a way that preserves identity and which is significantly more expensive than
the bulk handling system (Lin, Chambers, & Harwood, 2000; Bullock &
Desquilbet, 2002).
References
Bullock, D.S., & Desquilbet, M. (2002). The economics of non-GMO seg... 阅读全帖 |
|
C*I 发帖数: 4736 | 38 http://rt.com/usa/toxic-study-gmo-corn-900/
A leaked study examining genetically-modified corn reveals that the lab-made
alternative to organic crops contains a startling level of toxic chemicals.
An anti-GMO website has posted the results of an education-based consulting
company’s comparison of corn types, and the results reveal that genetically
modified foods may be more hazardous than once thought.
The study, the 2012 Corn Comparison Report by Profit Pro, was published
recently on the website... 阅读全帖 |
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c******u 发帖数: 739 | 39 1. draw the picture in one slide.
2. print it into PDF.
3. zoom out in PDF Reader( the larger the better).
4. crop the picture as you like.(if you don't have crop tool just use QQ
screenshot).
5. if you use qq, its done already. If you crop use crop tool, you need to
save the file into .jpg or other format or just pdf. latex can take pdf
picture. so no worry. |
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发帖数: 1 | 40 12月 谈谈间谍问题
我一直感觉Reuters 有日本的间谍,他们会通过报道来传递针对华人屠杀的计划,和发
布不利于华人的报道,制造舆论。最重要他们后边的势力和犯罪集团有关。有必要好好
调查这个组织。
How top U.S. colleges hooked up with controversial Chinese companies
By Steve Stecklow and Alexandra Harney
Filed Dec. 2, 2016, noon GMT
New Oriental, China’s biggest private educator, has been accused of
academic fraud. Thanks to two enterprising Americans, it has also gained
access to leading U.S. college admissions officers.
SHANGHAI/SHELTER ISLAND, New York - Thomas Benson once ran a small... 阅读全帖 |
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O*******d 发帖数: 20343 | 41 GM crops currently on the Market in the United Stat
es
More than sixty genetically modified crops have bee
n approved for US food and feed supplies:
Corn (20 varieties)
Oilseed Rape/Canola (11 varieties)
Cotton (11 varieties)
Tomato (6 varieties)
Potato (4 varieties)
Soybean (3 varieties)
Sugar Beet (3 varieties)
Squash (2 varieties)
Cantaloupe
Rice
Flax
Raddicchio
Papaya
Alfalfa
Wheat
Of these crops, only corn, soybeans, cotton, canola
, squash, and papaya grown in... 阅读全帖 |
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发帖数: 1 | 42 Yangtze River
RIVER, CHINA
WRITTEN BY: Aleksandr Pavlovich Muranov Charles E. Greer
See Article History
Alternative Titles: Ch’ang Chiang, Chang Jiang, Da Jiang
Yangtze River, Chinese (Pinyin) Chang Jiang or (Wade-Giles romanization) Ch
’ang Chiang, longest river in both China and Asia and third longest river
in the world, with a length of 3,915 miles (6,300 kilometres). Its basin,
extending for some 2,000 miles (3,200 km) from west to east and for more
than 600 miles (1,000 km) from north to so... 阅读全帖 |
|
发帖数: 1 | 43 Yangtze River
RIVER, CHINA
WRITTEN BY: Aleksandr Pavlovich Muranov Charles E. Greer
See Article History
Alternative Titles: Ch’ang Chiang, Chang Jiang, Da Jiang
Yangtze River, Chinese (Pinyin) Chang Jiang or (Wade-Giles romanization) Ch
’ang Chiang, longest river in both China and Asia and third longest river
in the world, with a length of 3,915 miles (6,300 kilometres). Its basin,
extending for some 2,000 miles (3,200 km) from west to east and for more
than 600 miles (1,000 km) from north to so... 阅读全帖 |
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s**********t 发帖数: 1846 | 44 http://rt.com/usa/toxic-study-gmo-corn-900/
A leaked study examining genetically-modified corn reveals that the lab-made
alternative to organic crops contains a startling level of toxic chemicals.
An anti-GMO website has posted the results of an education-based consulting
company’s comparison of corn types, and the results reveal that genetically
modified foods may be more hazardous than once thought.
The study, the 2012 Corn Comparison Report by Profit Pro, was published
recently on the website... 阅读全帖 |
|
l****z 发帖数: 29846 | 45 by Jed Babbin
Your car will get better mileage if the price of your Thanksgiving turkey
goes down, and my chain saw will start more easily. It all comes down to the
price of corn, and how much ethanol the federal "Renewable Fuel Standard"
mandates to be blended in gasoline.
The price of corn is going to go up sharply in the coming months because the
worst drought in fifty years has brought disaster to corn farmers.
According to the EPA, which has control of the Renewable Fuels Standard
created b... 阅读全帖 |
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l****z 发帖数: 29846 | 46 【 以下文字转载自 Biology 讨论区 】
发信人: Chamgrape (香槟葡萄), 信区: Biology
标 题: 这期Nature Biotechnology上关于转基因的文章
发信站: BBS 未名空间站 (Tue Sep 10 14:15:59 2013, 美东)
http://www.nature.com/nbt/journal/v31/n9/full/nbt.2700.html?WT.
真正想了解而不是想吵架的同学可以看看
还可以给身边对这个有疑问的朋友看看
也提到了去年法国的那个老鼠实验
还有黄金大米
Contrary to popular belief
Nature Biotechnology 31, 767 (2013) doi:10.1038/nbt.2700
Published online 10 September 2013
Three decades after transgenes were first introduced into plants, why do so
many consumers remain so negative abou... 阅读全帖 |
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