Hot answers tagged

9 votes

Is a TTL wireless flash trigger something meaningless?

TTL simply means that the camera tells the flash to send out a "preflash" burst of light at a known brightness level that the camera can meter, so it can have a sense of how to set the flash ...
  • 49.4k
8 votes
Accepted

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

The same is true when the flash is on the camera, facing away from the subject into empty space with nothing to reflect it back to the subject. The point of TTL is to adjust flash power automatically ...
  • 8,334
8 votes

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

What you want to do will not work. Here's why: The way TTL operates is that your camera meters a pre-flash to determine the amount of power to use when the shutter is open. This pre-flash is a low ...
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6 votes
Accepted

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

The problem that is solved via high speed sync has nothing to do with the power of the flash and everything to do with the curtain transit time of the camera. Above a camera's sync speed the second ...
  • 169k
6 votes

Is E-TTL Universal?

Is E-TTL Universal? No, it's the opposite of universal. It is proprietary and specific to Canon. Each brand has their own specific flash/camera communication system. The only thing that's universal ...
  • 49.4k
6 votes

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

Nikon doesn't tell Sigma how their TTL protocol works (and Sigma does not pay to license it). The communication is reverse engineered. Sometimes, the protocol used varies slightly from camera body ...
  • 140k
5 votes

Is E-TTL Universal?

No. E-TTL is a proprietary part of Canon's EOS flash system. Some third parties (e.g. Metz, Sigma, Yongnuo) have reverse engineered it, but to my knowledge it is not licensed to anyone else. Most of ...
  • 140k
4 votes

Are there any radio flash triggers capable of P-TTL?

The following radio-based flash triggering systems can communicate TTL for Pentax: The Cactus X-TTL system with their V6II/IIs triggers can give you remote power control over TTL Pentax flashes, HSS ...
  • 49.4k
4 votes

Is a TTL wireless flash trigger something meaningless?

TTL employs a pre-flash to calculate the power requirement for the main flash. For that pre-flash it is irrelevant where the flash sits - if it is further away, less light reaches the target and the ...
  • 2,998
4 votes

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

Godox has several lines of flashes (everything from speed lights to studio strobes) that are manual with HSS. The challenge is HSS requires the trigger interface with the cameras proprietary flash ...
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4 votes
Accepted

Is using a light meter along with TTL flash meaningless?

If you are using your flashes in full auto TTL, then there is no point in having a LightMeter, however, if you wish to have better control and more accurate tone, colour, brightness, contrast, shadows ...
4 votes

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

Don't forget that when using E-TTL you can also apply different power ratios and flash exposure compensation to each group independently. In your example of the hair light you can either change the ...
  • 169k
4 votes

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

The first thing you want to do is to check that the pins on the foot of the flash match the contacts on the hotshoe of your camera. They need to match in both the number of pins and placement so that ...
  • 49.4k
4 votes

Metering on a Zenza Bronica with ND-Filter

With my long exposures, I meter for the scene and then add whatever ND amount needed and disregard the camera’s meter from there on out. That being said, it wouldn’t hurt to do some testing to ...
  • 20.3k
4 votes

How do I avoid overexposure using a shoe-mounted flash outdoors?

Whenever you take a flash photo, you're basically combining two exposures together in one shot: the flash exposure made with light from the flash, and ambient exposure, made with all the light that's ...
  • 49.4k
4 votes
Accepted

Are there any 3rd-party TTL Leica flash options?

My conclusion as well: you can only get M-TTL with Leica-branded OEM flash gear on a Leica camera. I haven't run across any 3rd-party options. It's possible that Leica-branded Panasonic cameras could ...
  • 49.4k
3 votes

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

The basic answer is really that TTL flash isn't all that important in many situations, and that most of the situations where off-camera flash might be used fall into that camp. If you're in a place ...
  • 140k
3 votes
Accepted

Do all TTL systems calculate the same exposure?

I think you're confused as to what constitutes "a TTL system". Triggers merely relay the information from the camera to the flash. Whether you're using an AirRemote or a PocketWizard, if you're ...
  • 49.4k
3 votes

Do all TTL systems calculate the same exposure?

Since "TTL" (system) in your original question is really about "thru the lens" the software the system uses to transmit that information really has no bearing on the exposure value (fstop shutter ISO )...
  • 41
3 votes

Do all TTL systems calculate the same exposure?

I think the answer is a "maybe". You're talking about different hardware running different software. There will be many occasions where the different combinations of hardware and software will reach ...
3 votes
Accepted

Is a TTL wireless flash trigger something meaningless?

TTL is dependent on the focal point of your lens This is not the case. Some flashes have an automatic zoom, which automatically adjusts to the focal length of the lens. so if TTL flash is sitting ...
  • 8,334
3 votes
Accepted

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

In a wedding, with on-camera flash, bouncing off the ceiling, walking around taking pics of people dancing, etc. Does a TTL flash have advantages, and if so, what? The main advantage is speed. ...
  • 49.4k
3 votes
Accepted

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

Personally, I think it all comes down to how much you want one of the Godox bigger-than speedlight options. That's pretty much all the Godox system can give you that the Nissin Air system can't at the ...
  • 49.4k
3 votes

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

The Neewer VK750 II is very compatible with the Nikon DSLRs (iTTL, in the last ten years), including the D3400. This Neewer VK750 model appears to be a relabeled Meike MK-951. It is a good choice ...
  • 12.5k
3 votes

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

Here's a link to Neewer's website. I did a search for the VK750 ii and this was the only flash shown: https://neewer.com/?s=vk750 Apparently, Neewer has given this Nikon-compatible flash its own ...
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3 votes

How is 0EV for flash exposure compensation defined?

Yes, compensation of 0 EV is trying to properly expose the picture, meaning a goal of proper exposure level. This is true of both TTL flash exposure and of ambient exposure compensations. The problem ...
  • 12.5k
3 votes
Accepted

What is the flash S2 slave mode used for?

Many built-in flashes have no mode in which there is no preflash. This means that in S1, your external flash will be triggered then, and may fire too soon to be included in the exposure at all. So S2 ...
  • 140k
3 votes

Can a Godox XPro transmitter for one brand fire a legacy flash for a different brand + X1R in TTL?

No. While the X1R-C and XPro-S are compatible in terms of firing and possibly M power control, the Godox X1R receivers do not perform cross-brand TTL in the way the built-in radio transceivers in the ...
  • 49.4k
2 votes

What does TTL mean?

TTL stands for Through The Lens, and in the case of SLR metering, it indicates how the light is measured--that it's the light coming through the taking lens, rather than, say, an exterior sensor. In ...
  • 49.4k
2 votes

Best approach to handle flash with my film camera?

I think it depends on whether you're shooting in a controlled environment (like a studio setup) or "in the wild". TTL flash, especially the old kind which reads light bouncing from the film rather ...
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