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PostPosted: Sat May 12, 2007 10:46 pm 
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猜猜這是那處.....? :)
Where.......?


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PostPosted: Sun May 13, 2007 2:27 am 
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Great pictures siuyu.. and amazing colors... and i think i can offer a way to correct the perspective of single shots in order to combine them to a panorama, using Photoshop.

Lamma-Gung... what software do you use for 360-degree-pics?

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PostPosted: Sun May 13, 2007 11:43 am 
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Panoramas are pretty easy to do these days. Many digital cameras even have a Panorama setting. Basically, it just fixes all the exposure settings for a series of photos you shoot from one spot, something like 6-10 shots, ideally from a tripod but handheld is OK, too. Then the software stitches all the equally exposed photos together by searching for matching key/marker spots in adjoining pictures. You can set them by hand if the software gets it wrong, but that's rarely necessary. It will also handle the lens distortions automatically. The free software I use is called "ArcSoft PanoramaMaker" and something similar can probably be downloaded for free:

"The program does most of the work for you by automatically selecting an entire group of pictures with one click, automatically organizing the photos into the proper order, then seamlessly stitching the photos into a panoramic masterpiece that you can print, share or post to the web. Create horizontal, vertical and 360° panorama pictures."

The software came with my former Nikon snapshooter and should work with any series of photos with the same exposure.
There's a free trial version available at:
http://www.arcsoft.com/products/panoramamaker/?l=v

P.S. An even easier way for a panorama photo is shooting a scene at the highest resolution your camera supports with the widest angle lens you have. Then cut a horizontal, vertical or diagonal slice out of the huge picture by simply cropping it in any image handling program.

That's how I do most of my own "panoramic" photos in the Lamma-zine, for example this picture below, shot from the open-access rooftop of the Waterfront Restaurant, one of the best picture taking spots in the village, especially for bay, sunset and night shots.

I put the camera on the rooftop's handrail for a stable, really sharp shot at the necessary long exposure time and used the standard Night mode of my Nikon D80. Using my tripod, a remote control, Mirror Lock-up, Exposure Delay or a higher ISO setting (400 in this case) could get this shot even sharper and richer, if needed for fine print quality.


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PostPosted: Sun May 13, 2007 6:24 pm 
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Thanks, Lamma-Gung, for this very detailed information. However, any software that rotates/skews/scales pictures needs to have a very clever algorithm in order not to lose too much data "in between the pixels". Without promoting the much too expensive Adobe products, i found Photoshop offers the best solution if you want high quality pictures. Try to rotate a picture a few times and see the result. You'll lose color accuracy and sharpness. I also think just cutting away top and bottom (and then scaling the picture up to the desired size) does not really produce good results.

Anyway, thanks for the link, i will download and try it.

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PostPosted: Sun May 13, 2007 6:24 pm 
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Uhm... damn i forgot... great picture! It's my new wallpaper now.

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PostPosted: Sun May 13, 2007 7:34 pm 
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Glad you like it, here's one more, showing more of Po Wah Yuen.

I think I should do a 360-degree night panorama from this vantage point...


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PostPosted: Sun May 13, 2007 9:20 pm 
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Another great one... but you won't make me change my wallpaper again ;)


Lamma-Gung {L_WROTE}:
I think I should do a 360-degree night panorama from this vantage point...


Definitely.

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PostPosted: Thu May 17, 2007 10:00 pm 
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常吃疏果,有益健康. :D


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PostPosted: Wed May 30, 2007 8:20 pm 
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今天,由北角山搖望綠洲.
Luk Chau.


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PostPosted: Thu Jul 05, 2007 8:38 pm 
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今日不如分享下小弟用DC仔影全景相既經驗.
只要有正確既技巧,構圖.&良好的時間配合.一部平價既數碼相機一樣可以拍出好好既作品.

綜合小如既經驗.以下數點需要注意:
1:構圖
2:曝光

取景前,當然對準水平.只要多加練習,大可不用腳架(我絕大部份既數碼全景相都係手持拍攝)
先講構圖,一般DC既相片比例係2:3.平時大家可能會影橫方向(包括小弟)出黎效果比較長方形.但因應唔同情況,而改為直度取景的話.出黎效果會有所不同,
而相片既透視空間感,都會有分別.以下就有2個例子可供參巧.
1a
{L_IMAGE}
+

{L_IMAGE}
=
{L_IMAGE}

1b
{L_IMAGE}
+
{L_IMAGE}
+

{L_IMAGE}
=

{L_IMAGE}

講住咁多下回繼續....

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PostPosted: Mon Jul 09, 2007 11:04 pm 
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跟住落黎,就講下嚗光.
一張照片的曝光,確實是成敗的關鍵.
要撰取一些較為準確的嚗光,最好具備一些有有手動工能的相機.因應當時環景及個人喜好而調較光圈及快門.
下面張相係分別用左+-1/3級既嚗光拍下.不同調節下,顏色跟飽和度都出現了分別.當撰了喜歡的那張,
為避免相機內的自動測光,因改燮了拍攝角度而出現重新調整的可能,就依這個數值轉為手動工能.再拍.就完成你的作品了.如相機具備包圍嚗光功能,這個工序會燮得較輕鬆.
{L_IMAGE}

{L_IMAGE}

{L_IMAGE}


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PostPosted: Tue Jul 10, 2007 2:10 pm 
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另一樣,就係光源既方向.如果想全景相既嚗光一致.便要留意太陽既方向.
及不要過份拉長取景,開始時只用2-3張做.可減低嚗光不均情況發生.
夏天在下午4時後.陽光減弱.色彩飽和度增加.是拍照的好時份.
下面個例子就可以睇到,過份拉長取景近太陽位置受光過度.

{L_IMAGE}


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PostPosted: Wed Jul 11, 2007 9:59 pm 
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究竟,皚皚雲端之內.天空之城,又是否存在...
衆生心中的樂土,又是在何處?您能捉緊她嗎?

過眼浮雲..何處是吾家.


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PostPosted: Sat Aug 04, 2007 11:45 am 
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今夜星光燦爛...
請停一停..看看流星又會否為您而劃過.


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PostPosted: Mon Aug 27, 2007 10:14 pm 
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釣魚高手.......


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PostPosted: Sun Sep 09, 2007 11:14 pm 
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看著如詩般,葡萄色的晚霞.
酒不醉人,人自醉.


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PostPosted: Wed Sep 26, 2007 11:33 pm 
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不知從何時開始,變得隨緣.
每當自己太刻意拍攝時,往往就是天公不做美.
但當興之所至時,跑到山上,驚喜就總愛在這時候出現. :)


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PostPosted: Thu Sep 27, 2007 5:06 pm 
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siuyu {L_WROTE}:
看著如詩般,葡萄色的晚霞.
酒不醉人,人自醉.


Siuyu

Your picture is the most beautiful sunset picture I have ever seen. Thank you for sharing with us!


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PostPosted: Thu Sep 27, 2007 5:37 pm 
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Thanks for your great photos. 謝謝。

What software do you use to join the images together? 用什麼軟件?


Last edited by Yogesh on Thu Sep 27, 2007 10:15 pm, edited 1 time in total.

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PostPosted: Thu Sep 27, 2007 9:36 pm 
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Yogesh {L_WROTE}:
What software to you use to join the images together? 用什麼軟件?

HP Photosmart Premier

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