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9 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 ...
null's user avatar
  • 8,514
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 ...
Michael C's user avatar
  • 175k
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 ...
mattdm's user avatar
  • 143k
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 ...
inkista's user avatar
  • 52.2k
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 ...
mattdm's user avatar
  • 143k
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 ...
OnBreak.'s user avatar
  • 20.5k
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 ...
inkista's user avatar
  • 52.2k
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 ...
inkista's user avatar
  • 52.2k
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 ...
Joel's user avatar
  • 41
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 ...
Michael C's user avatar
  • 175k
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 ...
inkista's user avatar
  • 52.2k
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 ...
inkista's user avatar
  • 52.2k
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 ...
mattdm's user avatar
  • 143k
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 ...
inkista's user avatar
  • 52.2k
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 ...
frank's user avatar
  • 572
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 ...
WayneF's user avatar
  • 12.9k
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 ...
mattdm's user avatar
  • 143k
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 ...
WayneF's user avatar
  • 12.9k
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 ...
inkista's user avatar
  • 52.2k
2 votes

How is 0EV for flash exposure compensation defined?

0EV is the exposure that the camera and or flash meter determines is the correct exposure. When you turn on the flash your camera will pick a shutter speed that will sync with the camera. If it is ...
Ian Lelsie's user avatar
  • 1,170
2 votes

Is adapting legacy TTL flashes to digital-ready TTL systems technically or just marketing/no-one-bothers-impossible?

Your question can be broken down into three parts and you don't seem to consider the last issue: Is the pre-flash really necessary? Are old flashes capable of doing a pre-flash? Can the camera order ...
jarnbjo's user avatar
  • 3,280
2 votes
Accepted

Is there a studio flash system that supports wireless Canon E-TTL (not E-TTLII)?

E-TTL II is a minor software update for E-TTL. Source: https://en.wikipedia.org/wiki/Canon_EOS_flash_system#E-TTL_II which says: E-TTL II is a software improvement on E-TTL and is now a standard in ...
juhist's user avatar
  • 6,760
2 votes

HSS and TTL not working with Fuji X-Pro2 and Godox system

The SK400II doesn't suport TTL or HSS. In a monolight, you have to upgrade to something like the QT series, or one of the AD battery powered lights. The trigger supports all the Godox 2.4GHz lights, ...
Robin's user avatar
  • 1,582
2 votes
Accepted

Metering on a Zenza Bronica with ND-Filter

Should I rather meter without filter and then add 10 stops, or meter with filter, to get accurate exposure? Neither. Film doesn't respond linearly at very long exposures. This is known as ...
Michael C's user avatar
  • 175k
2 votes

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

The flash settings might not be the problem. In full sun, ISO 200, 1/200th second at f5.0 is about three stops over-exposed. High speed sync along with a faster shutter speed might produce the results ...
Bob Macaroni McStevens's user avatar
2 votes

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

Profoto Connect Pro now comes in a Leica version
ajm's user avatar
  • 21
2 votes

Why can't I control my Godox V860 II-N in TTL with my pop up flash (Nikon CLS system)?

...I am adjusting this setting ... on i-ttl green page of the Godox. This doesn't sound like your V860 II is set up properly to be used as a Nikon CLS/AWL optical slave to the D800's pop-up flash in ...
inkista's user avatar
  • 52.2k
1 vote

Why am I getting underexposure bouncing a Neewer flash from the ceiling on a Canon camera in TTL mode?

At 1/2 a second the odd bar of exposure is not visible. The images looks bright enough but it predictably blurry. I tested 1/40 and 1/80 also. At these speeds the bar is not visible but the images are ...
OnBreak.'s user avatar
  • 20.5k
1 vote

What is the flash S2 slave mode used for?

What am I missing? That it's a timing issue. The S1/S2 modes are "dumb"; there's no communication between the camera and the flash going on. A simple sensor on the flash detects when a flash burst ...
inkista's user avatar
  • 52.2k

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