Canon EOS 5 vs CAnon EOS 30 (а так же A-TTL vs E-TTL)
Всего 6 сообщ.
|
Показаны 1 - 6
Canon EOS 5 vs CAnon EOS 30 (а так же A-TTL vs E-TTL)
Если есть люди, снимавшие тем и тем, или хотя бы имевшие возможность их сравнить, объясните, насколько 30 лучше 5 или наоборот. Как я понимаю, основной минус 30 - это отсутствие точки, в 5 она есть, и 30 поддерживает E-TTL, как следствие - второй вопрос - такая ли полезная вещь E-TTL по сравнению с A-TTL. Как я ояпть же понимаю, при E-TTL замер осуществляется с помощью предвспышки, а не приведет ли это, скажем, к тому, что при съемке портрета снимаемый моргнет на предвспышку и на фотке будет c закрытыми глазами. Далее, умеет ли 5 просматривать глубину резкости. И еще, высокоскоростная синхронизация - это только с E-TTL вспыхами бывает?
Re: Canon EOS 5 vs CAnon EOS 30 (а так же A-TTL vs E-TTL)
Предвспышку в E-TTL снимаемый сможет заметить только, если мы делаем FELock (фиксацию экспозиции со вспышкой) и перекомпановку кадра, а так - предвспышка на глаз неотделима от основного импульса.
5-ку и 30-ку уже сранивали и обсуждали не раз:)
5-ка - камера из старой линейки, но классом повыше, т.е. имеет соотв. плюсы, кроме обозначенных Вами (норм. синхронизация покороче, диапазон выдержек пошире, б. прочный корпус и т.д).
Репетир диафрагмы (просмотр глубины резкости) у 5-ки должен быть:)
Цитата по системам TTL, A-TTL, E-TTL и высокоскоростной синхре из
http://bobatkins.com/photography/eosfaq/flashfaq.htm
Читайте и делайте свои выводы:)
====================
FLASH METERING MODES
====================
To understand the TTL, A-TTL and E-TTL metering modes, one must first
understand the function of the *two* light sensors contained in EOS
cameras:
Evaluative Metering Sensor: The Evaluative metering sensor
(positioned above the camera's focusing screen) is used for ambient
metering with all EOS cameras. E-TTL flash readings are also taken
with this sensor. E-TTL is currently available with EOS Elan II/IIE,
Rebel G and EOS IX when used with Speedlites 380EX or 220EX. Note
that the Evaluative metering sensor is blocked during exposure by the
camera's reflex mirror.
TTL Flash Metering Sensor: The TTL flash metering sensor (positioned
in the camera's mirror chamber and aimed at the film plane) is used
for A-TTL and TTL flash readings off the film plane during exposure.
All current EOS cameras feature segmented TTL flash sensors, designed
to bias flash exposure to the area of the picture identified by the AF
system as the main subject. Note that only the TTL flash metering
sensor is active during exposure, and then only in combination with an
A-TTL or TTL Speedlite.
With that background, here's what the flash metering modes do:
Evaluative Through-the-Lens Mode (E-TTL)
E-TTL (prestored evaluative through-the-lens flash exposure control) is a
new flash mode that reads through the lens, but not off the film.
Introduced for the first time in 1995, E-TTL is currently available with
the EOS Elan II/IIE, Rebel G and EOS IX SLR cameras exclusively when used
with Speedlites 380EX or 220EX. Utilizing a preflash fired after the
shutter button has been fully depressed but before the camera's reflex
mirror goes up, E-TTL uses the camera's evaluative metering sensor to
analyze and compare ambient light exposure values with illumination
reflected from the subject by the preflash. This data is used to
calculate and store the flash output required for optimum exposure of the
main subject (identified by the autofocus system), while maintaining a
subtle balance between foreground and background. Though transparent to
the user, E-TTL represents Canon's most advanced flash exposure control
system to date.
Advanced Through-the-Lens Mode (A-TTL)
The predecessor to E-TTL, A-TTL (Advanced Through-the-Lens) is used with
Speedlite 540 EZ when set for direct flash in the camera's Program mode.
(TTL flash exposure control is available at other times.) Like E-TTL,
A-TTL reads through the lens and concentrates its sensitivity on the area
of the picture covered by the active focusing point. Unlike E-TTL, A-TTL
controls flash exposure with a dedicated sensor that reads flash
illumination reflected from the surface of the film during exposure.
A-TTL also uses a preflash, but unlike E-TTL, the preflash is used to
calculate an aperture value based on the distance that light must travel
from the flash to the subject. In Program mode, the camera compares the
distance-based aperture data to the ambient-based aperture data calculated
by the camera's normal metering system, and selects the smaller aperture
value of the two. This method ensures accurate exposure of the subject in
any lighting condition. Speedlites equipped with A-TTL are fully
compatible with all EOS cameras.
Through-the-Lens Mode (TTL)
TTL (Through-The-Lens) is the automatic flash exposure control mode used
by the small pop-up flash units built into some EOS cameras. It is also
available with Speedlites 380EX and 220EX when used with EOS cameras other
than the Elan II/IIE, Rebel G and EOS IX. Additionally, TTL is the
standard flash mode for Macro Ring Lite ML-3, Speedlite 200E, Speedlite
480EG and Speedlite 540EZ (except when set for direct flash in the
camera's Program mode as outlined above). TTL is identical to A-TTL in
almost every way, except there is no preflash. It can be used in every
camera exposure mode. In Program mode, TTL always selects an aperture
value based on the level of available light.
HIGH-SPEED SYNCHRONIZATION (FP FLASH)
=====================================
The FP flash mode of the EX series of Speedlites (220EX, 380EX) allows the
EOS Elan II/IIe, Rebel G and EOS IX SLRs to synchronize E-TTL or FEL flash
exposure at *any* shutter speed. Therefore, even in bright daylight
conditions, a fast lens can be used at a wide aperture to blur the
background and emphasize the subject in portraiture, using the flash to
provide shadow- fill. FP flash is automatic and simple to use. It is
available in Intelligent Program, Shutter-priority AE, Aperture-priority
AE, and Manual modes.
Be careful when using flash for shadow-fill in sunlight. Flash
shadow-fill also creates flash shadows of its own. The Elan II drops
flash exposure 1.5 stops below normal for shadow-fill. You can reduce
flash fill (and thus reduce flash shadows) by setting Flash Exposure
Compensation to a negative number.
I think of FP mode as an abbreviation for "Fast Pulse mode", although it
actually stands for "Focal Plane mode". Only EX flashes can do this. The
flash emits a series of brief flashes at high frequency (around 50 KHz or
higher) to uniformly expose film while the shutter's slit is moving across
the film. Although you can do flash photography at any shutterspeed, the
flash's guide number is higher at/below the body's flash sync speed.
The guide number drops as you increase shutterspeed, with the net result
that the maximum distance you can shoot remains approximately constant,
regardless of shutterspeed (and regardless of film speed; think about it).
For the 380EX, that maximum useful shadow-fill distance (in noon sunlight)
is about 2.5 or 3 metres. The manual for your flash has a table of the
guide numbers for all shutter speeds and focal lengths from 28 to 105 mm.
5-ку и 30-ку уже сранивали и обсуждали не раз:)
5-ка - камера из старой линейки, но классом повыше, т.е. имеет соотв. плюсы, кроме обозначенных Вами (норм. синхронизация покороче, диапазон выдержек пошире, б. прочный корпус и т.д).
Репетир диафрагмы (просмотр глубины резкости) у 5-ки должен быть:)
Цитата по системам TTL, A-TTL, E-TTL и высокоскоростной синхре из
http://bobatkins.com/photography/eosfaq/flashfaq.htm
Читайте и делайте свои выводы:)
====================
FLASH METERING MODES
====================
To understand the TTL, A-TTL and E-TTL metering modes, one must first
understand the function of the *two* light sensors contained in EOS
cameras:
Evaluative Metering Sensor: The Evaluative metering sensor
(positioned above the camera's focusing screen) is used for ambient
metering with all EOS cameras. E-TTL flash readings are also taken
with this sensor. E-TTL is currently available with EOS Elan II/IIE,
Rebel G and EOS IX when used with Speedlites 380EX or 220EX. Note
that the Evaluative metering sensor is blocked during exposure by the
camera's reflex mirror.
TTL Flash Metering Sensor: The TTL flash metering sensor (positioned
in the camera's mirror chamber and aimed at the film plane) is used
for A-TTL and TTL flash readings off the film plane during exposure.
All current EOS cameras feature segmented TTL flash sensors, designed
to bias flash exposure to the area of the picture identified by the AF
system as the main subject. Note that only the TTL flash metering
sensor is active during exposure, and then only in combination with an
A-TTL or TTL Speedlite.
With that background, here's what the flash metering modes do:
Evaluative Through-the-Lens Mode (E-TTL)
E-TTL (prestored evaluative through-the-lens flash exposure control) is a
new flash mode that reads through the lens, but not off the film.
Introduced for the first time in 1995, E-TTL is currently available with
the EOS Elan II/IIE, Rebel G and EOS IX SLR cameras exclusively when used
with Speedlites 380EX or 220EX. Utilizing a preflash fired after the
shutter button has been fully depressed but before the camera's reflex
mirror goes up, E-TTL uses the camera's evaluative metering sensor to
analyze and compare ambient light exposure values with illumination
reflected from the subject by the preflash. This data is used to
calculate and store the flash output required for optimum exposure of the
main subject (identified by the autofocus system), while maintaining a
subtle balance between foreground and background. Though transparent to
the user, E-TTL represents Canon's most advanced flash exposure control
system to date.
Advanced Through-the-Lens Mode (A-TTL)
The predecessor to E-TTL, A-TTL (Advanced Through-the-Lens) is used with
Speedlite 540 EZ when set for direct flash in the camera's Program mode.
(TTL flash exposure control is available at other times.) Like E-TTL,
A-TTL reads through the lens and concentrates its sensitivity on the area
of the picture covered by the active focusing point. Unlike E-TTL, A-TTL
controls flash exposure with a dedicated sensor that reads flash
illumination reflected from the surface of the film during exposure.
A-TTL also uses a preflash, but unlike E-TTL, the preflash is used to
calculate an aperture value based on the distance that light must travel
from the flash to the subject. In Program mode, the camera compares the
distance-based aperture data to the ambient-based aperture data calculated
by the camera's normal metering system, and selects the smaller aperture
value of the two. This method ensures accurate exposure of the subject in
any lighting condition. Speedlites equipped with A-TTL are fully
compatible with all EOS cameras.
Through-the-Lens Mode (TTL)
TTL (Through-The-Lens) is the automatic flash exposure control mode used
by the small pop-up flash units built into some EOS cameras. It is also
available with Speedlites 380EX and 220EX when used with EOS cameras other
than the Elan II/IIE, Rebel G and EOS IX. Additionally, TTL is the
standard flash mode for Macro Ring Lite ML-3, Speedlite 200E, Speedlite
480EG and Speedlite 540EZ (except when set for direct flash in the
camera's Program mode as outlined above). TTL is identical to A-TTL in
almost every way, except there is no preflash. It can be used in every
camera exposure mode. In Program mode, TTL always selects an aperture
value based on the level of available light.
HIGH-SPEED SYNCHRONIZATION (FP FLASH)
=====================================
The FP flash mode of the EX series of Speedlites (220EX, 380EX) allows the
EOS Elan II/IIe, Rebel G and EOS IX SLRs to synchronize E-TTL or FEL flash
exposure at *any* shutter speed. Therefore, even in bright daylight
conditions, a fast lens can be used at a wide aperture to blur the
background and emphasize the subject in portraiture, using the flash to
provide shadow- fill. FP flash is automatic and simple to use. It is
available in Intelligent Program, Shutter-priority AE, Aperture-priority
AE, and Manual modes.
Be careful when using flash for shadow-fill in sunlight. Flash
shadow-fill also creates flash shadows of its own. The Elan II drops
flash exposure 1.5 stops below normal for shadow-fill. You can reduce
flash fill (and thus reduce flash shadows) by setting Flash Exposure
Compensation to a negative number.
I think of FP mode as an abbreviation for "Fast Pulse mode", although it
actually stands for "Focal Plane mode". Only EX flashes can do this. The
flash emits a series of brief flashes at high frequency (around 50 KHz or
higher) to uniformly expose film while the shutter's slit is moving across
the film. Although you can do flash photography at any shutterspeed, the
flash's guide number is higher at/below the body's flash sync speed.
The guide number drops as you increase shutterspeed, with the net result
that the maximum distance you can shoot remains approximately constant,
regardless of shutterspeed (and regardless of film speed; think about it).
For the 380EX, that maximum useful shadow-fill distance (in noon sunlight)
is about 2.5 or 3 metres. The manual for your flash has a table of the
guide numbers for all shutter speeds and focal lengths from 28 to 105 mm.
У меня как раз обе эти камеры.
Снимаю много и обоими.
Автофокус одинаковый, но у 30ки гораздо удобнее выбирать точку.
Замер - у 5ки лучше, бо есть честная точка.
Репитер диафрагмы - на 5ке будет проблемой, если захочется с помощью CF вынести какую-нить функцию на *, тогда придется зырить на квадратик. :)
Затвор, протяжка и постоянный автофокус лучше у 5ки.
Подстветка АФ - у 5ки вне конкуренции.
Батареи 5ка жрет без меры, плюс в батарейной рукояти 5ки батарей нифига нет. :) Хотя рукоятка удобнее чем в 30ке.
30ка тише, но очень незначительно.
5ка ощутимо больше (Как по мне, так достоинство).
у 30ки ярче видоискатель, у 5ки есть сменные экраны.
Вспышка лучше у 5ки (встроенная).
А-ТТЛ весьма неплох, мне лично Е-ТТЛ не уперся (у меня две старшие вспышки).
30ка умеет быструю синхру со старшей вспышкой (или 420). Без старшей вспышки она ее не умеет. :)
У 5ки гнездо для штатива на оптической оси объектива что с рукояткой, что без. На 30ке если есть рукоятка - штатив где-то там. :)
5ка удобнее в руке, 30кой лучше управлять. Если нужен вертикальный кадр - 5ка удобнее 30ки с рукояткой.
Я бы брал 5ку.
Снимаю много и обоими.
Автофокус одинаковый, но у 30ки гораздо удобнее выбирать точку.
Замер - у 5ки лучше, бо есть честная точка.
Репитер диафрагмы - на 5ке будет проблемой, если захочется с помощью CF вынести какую-нить функцию на *, тогда придется зырить на квадратик. :)
Затвор, протяжка и постоянный автофокус лучше у 5ки.
Подстветка АФ - у 5ки вне конкуренции.
Батареи 5ка жрет без меры, плюс в батарейной рукояти 5ки батарей нифига нет. :) Хотя рукоятка удобнее чем в 30ке.
30ка тише, но очень незначительно.
5ка ощутимо больше (Как по мне, так достоинство).
у 30ки ярче видоискатель, у 5ки есть сменные экраны.
Вспышка лучше у 5ки (встроенная).
А-ТТЛ весьма неплох, мне лично Е-ТТЛ не уперся (у меня две старшие вспышки).
30ка умеет быструю синхру со старшей вспышкой (или 420). Без старшей вспышки она ее не умеет. :)
У 5ки гнездо для штатива на оптической оси объектива что с рукояткой, что без. На 30ке если есть рукоятка - штатив где-то там. :)
5ка удобнее в руке, 30кой лучше управлять. Если нужен вертикальный кадр - 5ка удобнее 30ки с рукояткой.
Я бы брал 5ку.
Если планируете брать новую вспышку 550EX или 420EX, то лучше взять 30-ку (E-TTL relezzz!!!), функция быстрой синхронизации может оказаться очень полезной. Плюс навороты с несколькими вспышками master-slave. И инергопотребление, как сообщил предыдущий товарищ, у 30-ки намного меньше (это очень важно). В 5-ке есть точка, 3.5% против 10%, но по большому счету это не так уж важно. 5 стоит на 100$ больше. Я взял 30-ку, хотя также думал и выбирал.
Такой же выбор был, взял 5-ку
