kkjy
It is fast ar,
But most shop give low resolution lei.
mostly 2-3M pixel ja.....

咁問法好難答喎, 看看你想用那張相用來作甚麼.... backup?? 開影展??? 我想你已經明白了.

快記?

only xxx kb.

高質廉價代各位掃描正負片菲林

朋友告訴我這論壇上有很多仍然喜愛用菲林照相的攝影高手，但往往受制於慢得要命的普通掃描儀，在外也難覓高質廉價的菲林掃描服務。本人也認同用菲林及傳統相機靚鏡頭拍的相片，遠較數碼相機來得好。小弟最近用五萬多元買了一臺美國制造的高速菲林掃描儀，其工作量每天可高達兩百卷(以2000 x 3000ppi, 600萬像素計)，自己用不完故毛遂自薦，希望為各位攝影高手今後增添一條掃描心愛菲林的渠道，使拍攝菲林的藝術能夠延續下去，自己也可以作為一種服務，賺回機器的成本。

暫定收費如下：(APS或原卷、四格、六格單條135正片、負片、黑白同價。單格菲林及已裝框正片不能做)

1000 x 1500ppi, 150萬像素：每卷HK$20.-
1500 x 2250ppi, 337萬像素：每卷HK$25.-
2000 x 3000ppi, 600萬像素：每卷HK$30.-

*上述每卷(或每份散底)以不多於38張菲林算

這掃描儀是42bit A/D 色彩轉換，色深最小為3.2D，最高達到4.0D，還有Digital ICE 紅外自動除塵或花痕，柯達全球色彩管理系統，質量是夠用的了, 尤其是掃正片確是不錯。

小弟對掃描的質素能否為各位接受有絕對信心，因為各位可以先檢驗過掃描質量，不滿意的不用付一分一毫!

對這項服務有興趣的朋友，請與小弟聯絡：(852)-90372582

我也很有興趣唷,龍一君請發表一下閣下掃瞄的作品吧! :)
另4*5,6*6可不可以啊?

ericshao兄:

4x5及6x6咁大面積要用Imacon來掃的, 很花時間,部機又貴,無買來玩, 我也是交給你地做算了,

有些Sample貼在:

http://www.dchome.net/viewtopic.php?t=119208

請參詳一下

Honestly 3090x2048 is ok to me.
I just don"t want to have scan with only 3M pixel or less.

600 million pixels is already the max resolution for 135 negative film?

龍一 , I have never heard of this. Can you tell something more about this or post some articles about such topic?
Questions come:
1.) Is there any pixel limit difference between different brand film.
2.) How positive performs?
3.) How you define "magnify only the grain of the film"?

jsklee
I see books that says over 40M pixel too.
Is it true for all type 135 film or difference between negative and positive?

I regret that there was a typing error, 2000x3000ppi is 6 million pixels.

1)How fine is the grain(resolution) would also vary between different speed type of film, brand and type of film, the exposure condition, film processing quality, etc.

2)You are right, in case of same speed film type and both exposed in normal(not under or over exposed), the resolution of positive film is about 25% better than negative.

I didn"t see any article concerning the grain resolution of 135 negative and positive film becasue the figure of 6 million pixels and the idea of item 1 & 2 was told by one of my friend who was an Kodak Engineer.

Herein is the reason why I quite believed him that the grain resolution would be arround 6 million pixels:

a)If 50 million pixels is true, that means the best scanning quality of 135 film should be 5800x8700ppi, i.e.150MB tif file! I have never heard aboutthat any scanner can make a file for 135 film for this size even the extreme expensive drum scanner.

b)Could any people tell me how large a print made from a normal exposed 135 film would produce no obvious grain on it? Most people may say 8" x 12" is best and 10" x 15" is acceptable. It is because 250dpi printing resolution is the average sight resolution of human eyes at a suitable/reasonable viewing distance. Please divide 2000 x 3000ppi by 250dpi, you will get 8" x 12".

I would be very glad if you could offer a link related to this issue so that I can learn more and confirm everything black and white.

However, even 50 million pixels is correct, practically in consumer market, no one photofinishing shop would make a print for you with a 150MB tif file.

Please comment...