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透视与焦距的关系(更新)
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r*f
2
【 以下文字转载自 Donation 讨论区 】
发信人: kewen (乡下妞), 信区: Donation
标 题: Your $10 donation will be matched Oct 10-20
发信站: BBS 未名空间站 (Sun Oct 10 22:17:43 2010, 美东)
Hi everyone,
JustGive.org is running a 10 anniversary year program. They will match $10
gift when you donate to your favorite charity (at least $10). Please take
this opportunity to help your charity to collect some extra donations!!!
Here is how you could do:
1.Go to
www.justgive.org/10years
2.Search your favorite charity.
For example, you type "OCEF" in "Charity Name or Keyword" and click "go".
3. After you see your charity, click "Donate Now" and you will be linked to
the donation page.
4. Put down the money you want to donate and click "Add to Basket" at the
bottom.
5. At the checkout page, remember to uncheck the default box for "Check here
to donate $3 to JustGive", if you don't want to give them $3. Then click "
Proceed to Checkout".
6. If you have donated from justgive.org before, you could login here. If
not, you may have to provide some information. Justgive.org will have
Minimum donation = $10 , admin fee = 3% .
Thank you very much for your attention! Your 10 minutes online input + $10
money will mean a lot to your charity!!
avatar
k*a
4
再补充一点,拍人像时,镜头(物理焦距不变下)到拍摄物的距离往往与sensor大小
成反比。

【在 z*c 的大作中提到】
: 这个图很清楚,尤其页面底部的几张图。透视只与镜头到拍摄物的距离有关。
: 全文链接如下
: http://www.google.com/imgres?imgurl=http://www.ctlow.ca/Photo/0

avatar
z*c
5
对,就是残幅往后退的道理。
上面的图还说明了背景虚化与焦距,拍摄距离,光圈的关系。

【在 k********a 的大作中提到】
: 再补充一点,拍人像时,镜头(物理焦距不变下)到拍摄物的距离往往与sensor大小
: 成反比。

avatar
l*y
6
昨晚看了一下, 你太较汁了
同话题已经有人贴过样片了, 考古即可
avatar
z*c
7
三天不学习,赶不上刘少奇。

【在 l*******y 的大作中提到】
: 昨晚看了一下, 你太较汁了
: 同话题已经有人贴过样片了, 考古即可

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