chào các bác, bàn luận tí về flash nào

[nambong]

Xuất phát từ nhu cầu muốn tậu 1 con flash ngoài, nên e post bài này a e trao đổi cho e học tí kinh nghiệm về đèn flash canon với ^^
E đang dùng canon 400D, dùng flash nào ngon bâyg ìơ nhở các bác !?
Flash phân chia cấp độ tương tự phân chia như lens không nhể?

[MeoBong.Vil]

flash có nhiều loại ứng với từng dòng và từng đời.

Canon thì mình ko rành nhưng mình nghĩ 400D có thể dùng tốt nhất với 430EX. giống trường hợp của Nikon. SB400-D40/D40X, SB600-D60, SB800-D80, SB900-D90. Tuy nhiên dùng chung tất cả cũng ko sao

[tung2403]

Tiếng anh của em rất kém, sưu tầm được một bài về flash Canon, nhờ bác nào dịch hộ để tham khảo:
Canon Speedlites - 580EX, 430EX, 420EX, 220EX (plus 380EX and 550EX)
The Canon speedlite system is a source of confusion to many new (and quite a few old!) Canon EOS users. This has been made somewhat worse with the introduction of DSLRs as they are not really compatible with early "EZ" series Speedlites. DSLRs require newer "EX" Series speedlites in order to provide a reasonable degree of automation and allow automatic exposure.
"EX" series speedlites allow the use of E-TTL (and E-TTL II) which are flash metering systems which use a preflash and the camera's multi-zone evaluative metering system to determine optimum flash exposure. Earlier "EZ" series speedlites did not use a pre-flash and determined flash exposure by measuring the amount of light being reflected from the film surface onto special flash exposure sensors during exposure. [Note that "EX" series speedlites default to the older "A-TTL" mode of the "EZ" series when used with older EOS bodies which don't support E-TTL.] Since DSLRs have no film and they are anti-reflection coated, this metering system can't be used and so "EZ" series speedlites are incompatible with auto exposure on Canon EOS DSLRs. They can be used in a fully manual mode, i.e. basing the aperture setting on the camera on the guide number of the speedlite, the ISO setting and the subject distance.
ETTL-II is very similar to E-TTL, except it uses a slightly different algorithm to calculate flash exposure and it can also factor in the distance to the subject when required. You can read a bit more about it here - ETTL II
"EX" series speedlites do provide the pre-flash which E-TTL (and E-TTL II) metering requires. There are currently three "EX" series speedlites in production (plus a couple of specialized macro ringlites). They are the 580EX, the 430EX and the 220EX (with the 420EX and 550EX discontinued). They differ both in flash power and in features. They all support FP high speed flash sync (at reduced power).
Canon Speedlite 220EX
The 220EX is the least expensive and has least features. It's a simple speedlite with head that neither tilts, swivels nor zooms. It has no manual power adjustment. The main advantages of using an external speedlite like the 220EX is that it gives you more power then the built in flash on the 10D/20D/300D/350D, it gets the flash head slightly higher (so may result in slightly less "red-eye") and it saves you from drawing flash power from the DSLR battery.
Canon Speedlite 380EX
This was the predecessor of the 420EX (see below). It has a zoom head which can be tilted for bounce flash, but which does not swivel like that on the 420EX. It does not have the capability to be used as a wireless slave. It's a good basic flash. Much better then the 220EX.
Canon Speedlite 420EX (discontinued 09/05)
For only a little more money, the 420EX offers a lot more capability. It has a head that tilts, swivels and zooms for example. The tilt and swivel head allow for bounced flash (which often gives a more pleasing result than direct flash), and the zooming head optimizes the flash coverage to the lens field of view from 24mm to 105mm. The 420EX can also be used as a slave in wireless flash operation. It has higher power then the 220EX and it only costs about $75 more. Unless you need the smallest and lightest possible speedlite, I can see no good reason to buy a 220EX (at $125) rather than a 420EX (at $200). It's a much more useful speedlite. It has been discontinued by Canon and replaced by the 430EX which sells for around $260. New ones are now hard to find.
Canon Speedlite 430EX
The replacement for the 420EX, the 430EX adds manual zoom and power control, custom functions, automatic zooming correction based on image sensor size for current DSLRs, transfer of white balance info to current DSLRs capable of reading it, and LCD readout and faster recycling times. The 580EX (see below) adds the ability to act as a wireless master, increased power, external power options, more custom functions and stroboscopic operation - for an extra $150.
Canon Speedlite 550EX (discontinued)
This was Canon's "top of the line" speedlite before the 580EX (see below) was introduced. It has most of the features of the 580EX, except for the color temperature and "digital awareness" of the 580EX. It's no longer listed as a current product by Canon though. It's very nearly as full featured as the 580EX and it can be a good buy if you can still find one at a discount price. It's actually the speedlight that I still use.
Canon Speedlite 580EX
This is the "top of the line" speedlite. Like the 420EX it has a head that tilts, swivels and zooms. However it's loaded with extra functions. It can act as a wireless controller for wireless flash operation (and it can also act as a slave). It has a variable stroboscopic flash mode (from 1 to 199 flashes/sec at from 1/4 to 1/128 power) and in manual mode the power can be set anywhere from full power to 1/128 power. The zoom head can be manually set. It's smart enough to know the sensor size on DSLRs made after the EOS 300D and adjust the flash zoom setting to allow for smaller sensors (which results in less wasted light). It can tell the DSLR about variations in the color temperature of the light due to charge level and so allow for automatic color balance corrections. There are also 14 user setable custom functions. About the only thing it doesn't do is make coffee. Of course the price of this is reflected in the cost, which is around $380, but if you do a lot of flash work, it's worth it. See the 580EX release notes for more info on the 580EX.
Here's a table which summarizes some of the differences between the 580EX, the 550EX (discontinued), the 430EX, the 420EX (discontinued) and the 200EX Speedlites:
If I was a typical amateur photographer who was looking for a new speedlite to go with a new DSLR, I'd probably go for the 430EX, unless I was really serious about getting into multiple flash photography. It has most of the features that average photographer is likely to need for single flash work. If you want to use multiple flash units, then the master wireless control features of the 580EX is required but you'll still need a 420EX, 430EX (or another 580EX) as your wireless slave.

[nhqdat]

em thấy nhiều người nói dùng đèn Mezt tốt hơn đèn của canon. Cá nhân em dùng 430EX cũng không thấy vừa ý lắm (ghét cái màu vàng vàng của nó khi đánh trần) mà máy xxxD lại không có WB bằng nhiệt độ màu được.

[KiNGHAI]

Thường dùng flash thì mình để WB là Flash hoặc AWB, chứ ít khi nào set theo nhiệt độ màu hay preset. Mình cũng dùng 400D với 430EX, không thấy nó bị vàng, của bạn bị vàng thế nào vậy?

[pro-k]

flash có nhiều loại ứng với từng dòng và từng đời.

Canon thì mình ko rành nhưng mình nghĩ 400D có thể dùng tốt nhất với 430EX. giống trường hợp của Nikon. SB400-D40/D40X, SB600-D60, SB800-D80, SB900-D90. Tuy nhiên dùng chung tất cả cũng ko sao
:13:bó tay, cũng ko biết nên nói thế nào với câu trả lời này luôn

lần đầu tiên nghe đến chuyện Flash phù hợp với seri máy, có vẻ bạn ko chỉ o rành canon không thôi đâu

[nova_ck]

Em cũng đang nghiên cứu về cái này ,
hiện tại nếu bác đủ USD thì làm 1 chú 580EX II là đỉnh rồi , nhạc nào cũng nhảy được.
Ít hơn tí nữa thì 430EX I / II hay 420 EX .
Nếu hạn hẹp nữa thì bác có thể dùng 380EX, tuy nhiên cái này không quay ngang được , ưu điểm là rẻ.
Nếu muốn nghịch ánh sáng thì có thể mua 2x nikon sb24 (tốt nhất là sb26) sau đó dùng wireless trigger đánh không dây ,sẽ có rất nhiều thú vị .Em và bác g knight(tazangermany) đã dùng kiểu này trong mấy bộ ảnh , kết quả khá tốt.

[coolpix8700]

Em nghĩ, hiện tại với sirie 580EXII, 430EXII hệ thống flash của Canon không còn kém bất cứ một hệ thông nào khác. Còn trường hợp dùng trong nhà lẫn với các loại đèn thắp sáng khác, bác dùng preset (thực ra Canon gọi là custom WB) với 1 tấm vải trắng không bóng thì bác chỉ có thể chê là mầu không "phiêu" vì cứ trần trụi mầu thật thế nào ảnh chỉ đúng như vậy!
Nhưng topics như thế này cũng đã có rồi, bác chịu khó lục lại!

hay giúp bác vậy: http://www.vnphoto.net/forums/showthread.php?t=26355
http://www.vnphoto.net/forums/showthread.php?t=26355&page=6