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Questions tagged [ttl]

Through-the-lens metering (TTL) is a feature in many modern cameras that allows the user to measure light levels through the lens that will capture the picture.

7
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2answers
156 views

If a TTL and a non-TTL flash are strapped together in a softbox, will TTL expose correctly?

I have recently sold all my Yongnuo speedlite kit and bought into Godox, for their integrated radio system. I have, so far, an AD200 strobe, a TT685-F speedlight and an X1T-F controller (Fuji system)....
2
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3answers
127 views

How can I tell if a 3rd-party flash is compatible with my camera?

I am looking for a TTL flash compatible with my Nikon D3400. I am going to use it with a Tamron 70-300 (this one, to be precise) (which I have not bought yet) and with the 18-55 kit lens. I don’t have ...
0
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0answers
30 views

Is wireless TTL possible with the Sigma SD15?

I have a Sigma SD15 DSLR and a Sigma EF 610 DG Super flash. Both allegedly support wireless TTL, but I cannot find triggers or even a recommendation for triggers that will enable it. I've also read ...
1
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1answer
383 views

What TTL flashes will work with a Yongnuo 560IV?

I take my amateur photos with a manual Yongnuo 560 IV, and I am quite happy, but a lot of times a second speedlite could be very useful. I am considering to buy a TTL Flash to try it out. My only ...
-2
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1answer
1k views

What are the pros and cons of the Nissin and Godox flash systems for Fujifilm cameras?

I'm a Fujifilm X-T2 shooter and last month I purchased Nissin (x2) i60a and a Nissin Air 1 Commander. I'm looking to expand to 4 flashes next year. Is Godox as dependable as Nissin? I'm in such a ...
0
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1answer
342 views

Why doesn't my Sigma ring flash work in TTL mode with the Nikon D500 when it works fine with other Nikon Models?

I used to use this ring flash with my D7100 and 105 Nikon for several years. I just recently upgraded to the D500, and now all my pics are in overexposed (overblown) in TTL mode. I mostly used manual ...
2
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2answers
534 views

How can I trigger a non-TTL studio flash with a TTL flash?

I'm using a TTL studio light and would like to trigger one of my manual studio flashes to use as a hair light. The problem is, the manual light is set to slave mode and is firing on one of the TTL pre-...
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0answers
121 views

Why doesn't my Indra 360 meter correctly in TTL when the aperture is smaller than f/6.3 or the shutter speed is slower than 1/250s?

I've just bought a TTL studio light for use indoor and out. It's a Phottix Indra 360. I also bought an Odin 2 receiver for Nikon. The camera body is a D610. The flash doesn't seem to meter itself in ...
5
votes
1answer
947 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)...
3
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2answers
434 views

Is E-TTL Universal?

Are high-end, high-power studio strobes (i.e., Profoto) integrated into the E-TTL flash exposure system? Do they have the manual settings option?
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3answers
2k views

Is TTL flash really useful when using off-camera flash?

I have a Canon 700d and a 430EXIII flash. Recently I have been experimenting with off-camera flash. I was really surprised to see e-ttl ii available even when using off-camera flash (via the pop-up ...
0
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0answers
30 views

How does YN 560IV flash work? [duplicate]

I am using a Nikon D3300 with a Yongnuo flash YN 560IV, but it seems I can't really understand how the flash is working - as it is my first flash. So I would like to know what are the basics I need to ...
0
votes
1answer
83 views

How can I make the 580EX II “probe flash” on a 7D MkII?

I've bought the 580 EX flash used, it's my first external flash. And I'm playing around with it to get some experience. One of the problems I've noticed in very dark environments is that the autofocus ...
0
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1answer
120 views

Using camera in auto with TTL master flash and non-TTL slaves

What I'd like to be able to do is use one TTL master flash, perhaps connected directly to the camera with the camera in Av/Tv mode, and use a slave flash (or more than one) as either optical or ...
3
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2answers
946 views

Is using a light meter along with TTL flash meaningless?

I have a Sekonic light meter (478 DR I think) and I use my off-camera flashes in TTL mode. So I was wondering if using a light meter even makes sense in this case?
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3answers
87 views

Do all TTL systems calculate the same exposure?

Do all TTL systems calculate the same exposure? Three options for example: Nikon SB-910 flashes, you can do TTL with them. You can use PocketWizard Flex/Minis for TTL flash You can use Profoto ...
0
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2answers
1k views

Can I mix the Profoto off-camera flash system with other Nikon flashes?

If I get a Profoto B1, from what I read they do TTL and they have their own AirRmote trigger which is all important for me ( I do want Remote trigger and HSS and TTL) But now my question is how about ...
1
vote
1answer
580 views

TTL seems not to work on D7000 with sigma ring flash for dental photography

Cameras: D100 D7000, lens Nikon 105mm macro, Sigma ring flash Photos taken: facial head shots from approx 6 feet away from subject (f10) and dental intra-oral photos including frontal, right and left ...
1
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3answers
1k views

Is a TTL wireless flash trigger something meaningless?

I have a couple TTL flashes (Nikon SB-910s) and also a a couple of PocketWizards but I see on the internet that there are triggers that support TTL and that confuses me. If I am understanding ...
2
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1answer
944 views

How can I use an on-camera TTL flash with a Yongnuo 605N to trigger my off-camera manual speedlights?

I am using a Nikon D7000. I want to use an SB700 on camera in TTL as well as have my Yongnuo RF-605N trigger my off-camera speedlights in manual. The RF-605N does NOT perform TTL pass-through. I see ...
1
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3answers
1k views

Would a TTL flash have advantages over a manual flash for my scenarios?

I've never used a TTL flash before and have used my manual flash in three shooting sessions so far. I will receive my first TTL flash (Nikon SB910) and was wondering the following things: In a ...
5
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2answers
416 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 ...
0
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1answer
116 views

Canon 1000D and sigma ef-610 flash issues

I have a canon 1000D DSLR and a Sigma EF-610 flash. The Flash seems to work find in full Auto mode when attached to the camera body, but when I try to use it off camera I run into problems. When the ...
0
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2answers
1k views

Firing a TTL on-camera flash and manual off-camera flashes via radio triggers

I want to use an on-camera TTL flash and off-camera manual flashes simultaneously. That is, when I press the shutter button, I want my main on-camera flash to fire using TTL and my off-camera manual ...
2
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3answers
2k views

Why don't we have Manual flashes with High Speed Sync?

What's the technical challenge here? Is it more of a marketing decision to encourage you to pay more for TTL based models (let's disregard other advantages of TTL for the moment). If we can have flash ...
4
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2answers
4k views

Best approach to handle flash with my film camera?

Although I have been photographing for 3 years now, there are still areas I am fairly new to. I really love film photography, but I also like to use flashes for portraits and such. Of course with my ...
2
votes
3answers
407 views

If TTL only preflashes once, how does it get correct exposure immediately after?

If I understood TTL correctly, say you are in M mode with a camera and you have intentionally underexposed. The flash in TTL mode theoretically would try to add enough light to correctly expose the ...
0
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2answers
1k views

Inconsistent TTL results when flash used off-camera (YN565 EX II)

I've got a Yongnuo 565 EX II that meters flawlessly when attached to the hotshoe of my 60D, but is very inconsistent when used off camera and slaved to the built in flash unit. It frequently doesn't ...
9
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7answers
6k views

How does TTL flash work when there are multiple flashes?

I've been watching a lot of deconstructing videos on how the light is setup. Often times there are 2-3 flashes at the studio. The photographer will say that they are all set to TTL. But how does that ...
1
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1answer
759 views

E-TTL underexposure with flash zoomed in and shot through a modifier?

I think I have a Canon E-TTL issue with a specific camera body/lens combination when the flash is fired through a modifier (umbrella or softbox). When I use my EF-S 17-55 f/2.8 lens on my 60D body, ...
4
votes
1answer
627 views

Promaster Flash Module TTL on a Modern Canon DSLR

I have an old Promaster FTD 5600 flash. These flashes have an interchangeable module that allows it to work with different manufacturers' TTL systems. Right now the flash has a Nikon module; it does ...
2
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2answers
516 views

Why is flash TTL metering independent from ambient light metering? [duplicate]

In other words, why is ambient exposure metering independent from TTL metering? Let's say Im taking a picture in a room that has a window and some daylight is getting in,and Im shutting in P (program ...
5
votes
1answer
1k views

Pentax K-30 + Metz 52 AF 1 as off-camera slave

I recently bought external flash Metz 52 AF 1 and I have Pentax K-30 camera. Wireless mode works fine, however i expected it will be possible to use ONLY Metz flash without built-in pentax flash - ...
2
votes
2answers
274 views

Does auto mode of flash metering have any advantage over TTL?

Does auto mode of flash metering have any advantage over TTL? One advantage that I can think of is the absence of a pre-flash in the auto metering, which can make some people blink. (But I rarely use ...
1
vote
4answers
5k views

Does Canon 450D (Rebel XSi) have TTL ratio control over the menu?

There is "External flash control" section in the camera's menu. However it is not accessible if you have no external TTL flash on hand. How can I find out is there ability to change the output power ...
3
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3answers
2k views

How do I determine whether flash fired or not?

For example, I use a regular cropped DSLR (like Canon 400D (Rebel XTi)) and I use an external ON-camera flash (mounted on the camera's shoe). How do I determine by looking over the description within ...
3
votes
2answers
187 views

Does the Canon 600EX use face detection for improved ETTL?

I read that the canon 600ex rt has some face detect eTTL magic. Has anyone found this to provide real improvements? I'm shopping for a second flash and want to know if this is worth taking into ...
9
votes
2answers
2k views

Why is there still a flash before my exposure when using second curtain sync?

When I used second curtain sync on my Canon DSLR, I noticed that the camera flashes twice: once when the shutter opens and the other time when the shutter is about to close. (I noticed that because I ...
3
votes
5answers
931 views

Does TTL by definition overexpose your subject? [duplicate]

So I'm only beginning to learn TTL but from what I understand the preflash determines how much flash power to use. But the camera already exposes everything correctly for the entire scene (assuming ...
3
votes
1answer
342 views

What should I pay attention to when buying a second hand flash?

I am planning on buying a second hand ETTL flash for my Canon 550D. What are things I should pay close attention to when buying a second hand flash? For example: is there a parameter, comparable to ...
4
votes
2answers
186 views

Does a flash's TTL automatically adjust as I change its location?

I just bought a radio trigger for my flash. I was just wondering if I understood TTL correctly, as I move the flash around and changes the distance does TTL automatically try to compensate (assuming ...
5
votes
5answers
666 views

What are the most important features to look for in a low budget hotshoe flash and why?

When trying to get started with flash photography, there are a lot of new options, features and techniques that a photographer gets thrown in to. When starting on a budget, what features will give a ...
5
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3answers
2k views

How do TTL flash metering systems calculate how much power is needed?

Does anyone know how TTL calculates the amount of power to put in after the preflash is done? I understand that the value is somewhat brand specific, but what is the general logic? Because if you ...
3
votes
1answer
761 views

Why is my Metz 58 AF-2 using long shutter values when my Canon 60D is in Av mode?

About one year ago I bought a Metz 58 AF-2 for my Canon 60D. Because of a lack of free time to experiment with automatic functions, I have used it only in manual mode with other manual flashes, ...
1
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2answers
262 views

How do you meter for the effects of a TTL flash

I'm experimenting with a shoe mounted flash at the moment. It's a TTL flash and yet the metering doesn't seem to account for the fact the flash will fire, making judging the correct exposure difficult....
1
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5answers
557 views

What exactly does TTL flash sets its power to?

I understand that TTL flash means the flash will preflash and try to calculate the right exposure for that particular scene. That part makes sense, but what exactly is the "right exposure"? Does it ...
3
votes
1answer
407 views

Does the Canon DS6041 support TTL flash?

I've got that Canon model, and I'm using it with a Promaster 7500DX flash. The flash appears to support TTL light metering, but I can't find any way to make the camera recognize this. Consequently, ...
3
votes
3answers
1k views

How does TTL flash metering works in film cameras?

Unlike digital cameras, there are no pre-flashes in film cameras that do off the film metering. In absence of pre-flashes I want to know how camera can determine accurate flash power when flash is ...
5
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2answers
303 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 ...
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2answers
2k views

Pentax P-TTL: Why and when does underexposure occur and what can I do?

Pentax's P-TTL flash metering system tends to be unreliable and may underexpose at times. When and why does the system underexpose and what can I do? I want to know the situations that cause flash ...