All Questions
167 questions
32
votes
1
answer
38k
views
What are the differences between E-TTL, i-TTL, and P-TTL?
Canon, Nikon and Pentax each have their own TTL flash metering systems, respectively E-TTL, i-TTL, and P-TTL. They all use a weak preflash that is metered and used to calculate flash power level ...
- 32k
18
votes
7
answers
87k
views
Can a Nikon/Canon flash be used on the other brand of camera?
I was just thinking about this problem and was wondering if anyone knew if/how to use a competing flash unit (EX or SB series) on a Nikon or Canon (respectively) camera. I would assume a lot of the ...
- 1,317
14
votes
2
answers
587
views
What are the advantages of the Canon 580EX II over the 430EX II?
I want to purchase a Speedlite for my Canon DSLR, but am curious to whether I need to spend the extra dollars to get the top of the line 580EX II over the more affordable 430EX II.
What are the ...
- 401
14
votes
4
answers
2k
views
What was my flash power?
When I am using a Canon flash in the E-TTL mode, how can I tell which flash power the E-TTL magic chose?
For example, if I got a correct exposure in the E-TTL mode, can I easily choose the same flash ...
- 2,521
13
votes
1
answer
16k
views
How do I stop my Canon Speedlite (430exii) from going to sleep? (auto power off)
I want to use my Speedlite flash as my main flash off-camera and fire it remotely (with cactus V2 triggers) but I find it really annoying when the camera just goes to sleep and I have to walk over and ...
- 6,066
11
votes
7
answers
33k
views
How can I get proper flash exposure in AV mode without using ETTL?
I have a Canon 5D Mark II and normally shoot with natural light (I try to stay away from flash). However, I am taking on more situations where I need to use my hotshoe flash (Canon Speedlite 580 EX II)...
user4560
10
votes
2
answers
1k
views
Inexpensive flash with full ETTL support
I've been planning to get the Canon 430EX, but I'd love to save a little cash, so I started looking at other 3rd party flashes. I've found a few that claim to have ETTL II support, but being so much ...
- 23.7k
9
votes
2
answers
1k
views
Why do I get horizontal grey bar with flash at shutter speeds slower than max sync speed?
I'm a total newbie to flash photography, and I am just trying to do some test shooting with Canon Speedlite 580 EXII using my 7D.
I saw on the user manual that the maximum sync speed is 1/250 sec.
...
- 93
8
votes
3
answers
6k
views
What flash slaves can be used with a Canon Speedlite 600EX-RT?
My current flash setup is a standard shoe mount but I've been thinking about getting a remote.
I've been drooling over the Speedlite 600EX-RT. It uses radio to control slaves, which is nice (longer ...
- 183
7
votes
3
answers
3k
views
Can using an old flash damage a new DSLR if it never fired?
my daughter found my old flash (20+ years old) and tried it on her canon T3i. It didn't recognize it and it never fired, but she tried the shutter button. Could this have damaged her camera even if it ...
- 71
7
votes
4
answers
2k
views
How limiting are the line-of-sight requirements of Canon's optical wireless flash system?
I have a Canon 7D and 580EX II Speedlite, and am trying to make the jump into flash photography, particularly portrait work. I understand that the 7D's wireless trigger works by line-of-sight. Will ...
- 397
7
votes
2
answers
3k
views
Why does my old Quantaray flash not work on my newer Canon DSLR?
I have an older Quantaray QTB-7500A flash with the Canon TTL module. I used this with my old Canon EOS Elan 35mm which died a few years back. I recently bought a Canon Rebel XSi, because I could use ...
- 651
7
votes
4
answers
1k
views
Canon native flash off-camera second-curtain-sync: any news?
Is it possible yet to use off-camera second-curtain-sync with any of Canon's native wireless-radio-flashes?
After searching, I can't find any recent articles on this. Most of the older articles ...
- 1,296
6
votes
4
answers
1k
views
Can I reprogram my Canon Rebel T6i shooting modes to default to flash-off?
I would love if I could set the default of "Portait" and "Flower" mode on my T6i to have the flash set to off. Is this possible?
Every time I turn the camera on to take a photo, I have to go to the "...
- 163
6
votes
1
answer
4k
views
Why isn't my flash gear working with my Canon R50?
I just moved from a Canon dSLR system to the R mirrorless system by getting myself an R50. But none of my flash gear, which worked just fine with my dSLRs, seems to work with it. What's going on?
- 53k
6
votes
4
answers
8k
views
What is the best way to trigger a Canon 550EX speedlite in a studio?
I want to try my hand at off-camera flash for some indoor portraits. How should I trigger the speedlite (Canon 550EX)? Should I go for wired or wireless? What's the difference between a TTL cable and ...
- 5,098
6
votes
3
answers
9k
views
Why isn't infrared AF assist beam the default when available (instead of irritating strobing)?
I have an entry level Canon camera with a built-in flash.
When I try to photograph people at night the camera fires some pre-flashes to help with focus. While I do understand its necessity, some of ...
- 762
5
votes
10
answers
31k
views
How to remove external flash stuck on camera body?
Yesterday, after shooting I had to take the lens and flash off the camera body, but my flash 550EX got stuck and I can't get it off the body (EOS 5D).
How to take it off? I turned the ring to loosen ...
- 183
5
votes
3
answers
5k
views
Can I use my old Canon Speedlite 277T with my new Canon dSLR?
Actually it's my dad's flash that he bought many many moons ago to use with his old Canon T70. I don't have a flash but have borrowed his to try out, but he mentioned that some flashes will send too ...
- 357
5
votes
2
answers
3k
views
What are the functions of the extra contact points on a Canon hotshoe?
I am wondering about the 5 contact points on the top of the Canon camera for the flash. The flash I am putting on this camera has only the center contact. What are the functions of all these other ...
- 51
5
votes
1
answer
3k
views
What is the smallest option for a flash that can also bounce?
I have a full size Canon flash, which has a flash head that "can be moved up from 0-90°, left from 0-180° and right from 0-90°". This is a necessity for me in a flash to properly bounce the flash on a ...
- 46.6k
5
votes
3
answers
1k
views
How do I get started with off camera flash in the Canon ecosystem?
This is a very basic question, and I have looked through different resources including the Strobist Lighting 101 tutorial and a few books (Scott Kelby, Neil van Niekerk). Some of the limitations I ...
- 4,665
5
votes
2
answers
2k
views
Can you use the built-in flash in a Canon EOS 450D with a hot shoe GPS geo-tagger?
As far as I can see, the answer is no, the flash cannot open if anything, is plugged on the hot shoe of a Canon EOS 450D:
Can anyone confirm that I wouldn't be able to use something like the Jobo ...
- 439
5
votes
5
answers
4k
views
What are some budget flash options for the Canon 1000D?
Could you kindly suggest an external flash for 1000d within 100$ to 150 $.
My main interests are portraits and wedding.
- 211
5
votes
1
answer
4k
views
How do the Sigma flashes compare to (and work with) Canon flashes on Canon bodies?
Sigma produces some very powerful flashes, like the Sigma EF-610 DG ST and Sigma EF-610 DG Super, that cost a fraction of what Canon charges for their Speedlite of same guide number.
I'm already ...
- 8,298
5
votes
1
answer
10k
views
Simple Explanation of the Hot Shoe Pins on Canon Cameras and Flashes?
I haven't found any thorough documentation about exactly what each pin does and the signalling between a camera (say a T6i) and a flash (say speedlite 600ex-rt ii) looks like. What voltage levels, ...
5
votes
3
answers
5k
views
Why does my 420EX Speedlite sometimes fail to start up?
I have a Canon 420EX Speedlite that sometimes won't start up. When it's not working, it behaves as if it didn't have any batteries in it... just totally dead. The odd thing is, it doesn't seem to be ...
- 6,680
5
votes
1
answer
545
views
More powerful battery for on camera flash on Canon 5dMkII
I don't shoot weddings or enough events a year to warrant forking out the money for a full Quantum flash/battery yet.
I am trying to decide if I should either go ahead and get the Quantum battery ...
- 659
5
votes
2
answers
647
views
Why do I have to set my flash to -3ev flash exposure compensation?
I have a Canon 70d and I use the 622c wireless trigger/remote with the YN 565 EX flashes. When setting them on E-TTL, all my shots are overexposed. I've checked the camera and the flashes and all the ...
- 51
5
votes
1
answer
1k
views
How to use the safety shift custom function with a flash on a Canon 5D Mark II?
I do a lot of available light photography with f/1.2 and f/1.4 lenses. I use the "safety shift" mode (C.Fn I-6), which works great in combination with shutter priority mode (Tv). For example, I can ...
- 343
4
votes
2
answers
319
views
Why is ETTL necessary?
As I understand, the required flash power for correct exposure is determined by aperture, ISO and subject distance. It shouldn't matter whether a human subject is dressed in black or white -- the ...
- 939
4
votes
4
answers
4k
views
Canon Speedlite 320EX or 430EX II, which one to choose?
I am going to buy a wireless flash for my Canon 650D camera. I've got two lenses, the Canon 18–55mm kit lens and Canon EF 50mm f/1.8. I am not a newbie photographer and know how to use my camera well. ...
- 793
4
votes
3
answers
581
views
Why don't semi-automatic modes on a DSLR take flash into account when calculating exposure?
I've purchased a TTL flash today and was surprised to learn that the camera (Canon 77D) is apparently not taking it into account when you set it to aperture priority or any other automatic mode. The ...
- 2,976
4
votes
3
answers
8k
views
How do I get a black background with flash? [duplicate]
I have a Canon EOS Rebel T5. How can I achieve this using flash? Anytime I take pictures with flash, the background also gets brighter. I really want to put emphasis on the subject and have a dark/...
- 43
4
votes
2
answers
3k
views
How can I fire both a wireless trigger and an on camera flash at the same time?
I have three cactus v5 remote triggers. I also use Canon equipment. I want to be able to fire both a wireless trigger and an on camera flash at the same time. The wireless trigger would fire an off ...
- 2,043
4
votes
2
answers
21k
views
Can I have flash disabled by default in auto mode on Canon EOS 7D Mark II?
Sorry for the naive question. Just bought the 7D mark II and was wondering why if I disable the flash in auto mode, turn the camera off and then on, the flash is again enabled. Is it possible to have ...
- 143
4
votes
1
answer
1k
views
Why is my Canon DSLR's shutter speed slower than what I've set in Tv mode?
From what I understand, when in Av mode, the flash behaves largely as fill flash - the exposure is more or less set as if no flash is in use. However, in Tv mode, the manual suggests the shutter speed ...
- 143
4
votes
2
answers
826
views
Why does the ISO change with the shooting mode when the aperture and shutter speed are constant and using a flash?
I have a canon 60d, Canon EF-S 17-55mm f/2.8 IS USM lens, and a Canon Speedlite 430EX II TTL flash. I like to use the manual modes, such as Av and Tv but I am having some difficulties when using the ...
- 49
4
votes
1
answer
2k
views
How can I use a Canon 580EX II in manual mode in conjunction with Bryan Peterson's book on flash photography?
I'm trying to follow along with Bryan Peterson's book on flash photography using my Canon 580EX II. In the book, all of the examples are with Nikon flashes and there are some differences in the way ...
- 41
4
votes
1
answer
2k
views
What third party Speedlites work best with Canon?
I am currently picking out a flash (speedlite) for Canon XSI. There is a number of third party flashes available from manufacturers other than Canon. They all claim to be Canon compatible but I have ...
- 335
4
votes
1
answer
197
views
Why is my single test image much brighter than our Stackshot image output?
I'm working on taking stacked photos of small insect specimens for a university. I am using a Canon EOS 6D body camera. We are using a StackShot macro rail to image these specimens. An issue that has ...
- 41
4
votes
1
answer
2k
views
Does the Flashpoint (Godox) 2.4GHz wireless E-TTL work with the Canon 80D?
I recently purchased a bunch of Flashpoint (Godox rebranded) flashes from Adorama. Here is a list of all the items that I've bought:
Flashpoint R2 TTL Transmitter for Canon (Godox X1T-C, firmware v18)...
- 151
4
votes
3
answers
3k
views
How to troubleshoot Canon Speedlites that are not firing at the same time?
I'm working on some studio lighting and want to have my two Canon Speedlite 580EX IIs fire simultaneously using Canon's built-in wireless communications (i.e., I want the master to trigger the slave, ...
- 155
3
votes
3
answers
3k
views
Is there a Canon equivalent of the Nikon CLS?
Does Canon have its own version of the creative lighting system?
- 1,906
3
votes
2
answers
24k
views
Do Canon 430EXII speedlite flash units have an optical slave function?
Before I buy , i want to make sure:
will a 430exII fire by "seeing" the light burst from other flash sources? and if not, what canon speedlite can do this?
- 1,141
3
votes
4
answers
6k
views
Can Canon Rebel XS effectively optically trigger a speedlite flash?
I am looking at purchasing a flash to go with my Canon Rebel XS (EOS 1000D), such as the Speedlite 430 EX II. I understand that there is some ability to trigger the speedlite by way of the on-camera ...
- 382
3
votes
1
answer
2k
views
How do I read the flash distance scale on the Canon 580EX II?
My Canon 580EX II has a distance scale running from 0.5m to 18m.
When the flash is in manual mode, a single segment of the distance scale illuminates to indicate the maximum effective range for my ...
- 939
3
votes
2
answers
412
views
Mixing ambient with flash and how to calculate this?
I have a question I hope someone can shine a light on for me.
I usually shoot with flash only or ambient only. I need to do a small shoot on location where I must balance ambient with flash. Its a ...
3
votes
2
answers
4k
views
Can a Speedlite 430EZ be used with a Canon 6D?
I have recently bought a Canon 6D and want to use my Speedlite 430EZ with it. Is this possible, or are there compatibility issues?
3
votes
2
answers
1k
views
How do I adjust the amount of fill-in flash from the built-in flash of my Canon Rebel?
I have a Canon 450D/Rebel XSi. How do I adjust the amount of flash from the pop-up for fill-in flash?
- 31
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