Alley in Pisa, Italy

by Lars Kotthoff

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Flash is a device which provides additional light to a scene. It can be used to help fill in a dark area of a photo, to provide light if there isn't sufficient light to begin with, or it can help to improve the composition of a particular photo, by creating your own source of light.

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7
votes
2answers
1k 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 ...
1
vote
6answers
280 views

What would be the right way to shoot a portrait in a very dark room with flash?

I have several flash units. Both the shoe-mount type and the "studio" type. The portrait has to be taken in a room that happens to not have windows. It is always dark in there. I can bring a light ...
2
votes
1answer
180 views

Flash not firing when in live view [duplicate]

I have a Canon 60D and a Yongnuo YN560-III flash, everything works fine normally, but when i go in live view mode the flash doesn't fire Why is that?
1
vote
1answer
91 views

How come AF changes the way my flash works?

When I select AF instead of M on my 55-135 canon IS Lens, mounted on my Canon 700D, the flash sort of pops before I finish pressing the button and then again after I press it and it makes this scary ...
2
votes
2answers
765 views

Why don't these external flashes fire when the camera shoots in Live View mode?

I had the opportunity to use some professional flashes yesterday and I found out that they didn't fire when I was trying to shoot with the camera in Live View mode. The flashes were two Elinchrom ...
3
votes
5answers
220 views

Which Nikon flash will cover the full focal length of a 18-300mm lens?

What's the best external flash for the Nikon 5200 using a AF-S Nikkor 18-300mm lens? I want to make sure the flash covers the length of the lens.
3
votes
2answers
78 views

Do flash gels affect flash output?

Will flash gels affect the output of the flash? It seems that your are diffusing it to some extent and would need to compensate for it.
0
votes
1answer
121 views

Will an ND filter lower flash output more than high speed sync?

I understand that both can allow for bigger apertures to be used in bright daylight but I am a little confused about the pros and cons. Will high speed sync lower your flash output more compared to ...
2
votes
3answers
151 views

Why does my nikon flash fire 3 short flashes before the full flash goes off?

I have a Nikon D200 and I'm using the SB 800 flash. I've been using this flash for a year and now when I take a shot the flash pops 3 short flashes and then the shutter engages and the full flash goes ...
1
vote
2answers
292 views

Why isn't my Canon Speedlite 580 working on my 5D Mark II?

I was shooting at night and my flash was working perfectly, all of a sudden I tried taking another picture and it stopped working. I was using it on ETTL mode, the pictures looked underexposed with no ...
2
votes
2answers
167 views

Adding flash makes picture darker. Why?

I just started experimenting with flashes and was surprised by something, hope someone can explain me what us happening. I have canon 7d with built in flash extended, set to 1/32 power. Also, a flash ...
3
votes
3answers
169 views

How to recognize different lighting color temperatures?

I'm getting my first "real" flash soon, and I've been studying a bit about lighting techniques. However, the flash comes with little colored plastic covers to match the color of the environment's ...
2
votes
0answers
53 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 ...
1
vote
3answers
395 views

Disadvantages of always using the max flash sync speed?

Is there any disadvantage using the highest possible flash sync speed all the time? Here are my concerns: I have D700 (Nikon) and it's default value for flash sync is 1/250s, while there's an ...
0
votes
2answers
111 views

Buying my first off-camera light. Flash or always on-light? [duplicate]

I am planning to buy my first off-camera light equipment. And am confused between a flash & an always on light source. Can someone point me to a good online resource or share their experience? ...
1
vote
3answers
244 views

Using a diffuser actually made the lighting worse?

I have a well reviewed diffuser called Rogue flash bender. I find that I get worse results using it than not using it at all. I've tested this last night at home. I was at my living door with indoor ...
2
votes
3answers
247 views

How to stop built-in flash from pre-flashing?

Canon T2i keeps shooting pre-flashes; I have set the dial to "MAnual" (M) Im trying to trigger another separate flash optically-wirelessly with the in-camera flash but preflashes cause it to go off ...
1
vote
3answers
156 views

Fashion Photography Lightning Tips (Location - Ad Hoc - Portable) [closed]

I am looking for some Lightning gear in order to start shooting Fashion Photography on Location. Need something portable and I am not sure if flash would be ideal. I have been thinking about Ring ...
2
votes
1answer
135 views

What flash guide number do I need to underexpose a “sunny” background?

I'm familiar with the maths behind flash usage (guide numbers, etc.). Here's a more practical question that doesn't yet seem to have an answer on photo.se: Consider a subject, outdoors, on a regular ...
4
votes
3answers
864 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
4answers
1k views

How do I best use a pop-up flash for indoor birthday parties?

I just took photos of a two year old birthday party indoors at a Chucky Cheese. Just bought the Puffer for my flash, as the photography studio said it would be good for the birthday party. I tried ...
2
votes
2answers
407 views

How important is it that the Canon 50mm f/1.4 lens does not return distance data?

I read at the photonotes website that the Canon 50mm f/1.4 USM lens does not return distance information to the camera, to be used for E-TTL II. How important is this, and should this be a ...
4
votes
1answer
1k 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 ...
4
votes
2answers
260 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 ...
6
votes
1answer
267 views

Can an E-TTL II cable trigger a speedlite in Manual mode

Essentially, if you own an E-TTL II (or presumably iTTL) cable of a certain length/type, is there any reason to also own a manual PC-sync cable of a similar length/type, or can the camera be fired in ...
9
votes
2answers
558 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 ...
13
votes
3answers
593 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 ...
8
votes
2answers
310 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 ...
2
votes
0answers
218 views

Rule of thumb for manual setting of flash for daylight fill? [duplicate]

I have a number of systems but have TTL flash only on one system. On another system, I use a non-TTL flash (generic) flash in either auto or manual mode. Past experience tells me that using a generic ...
4
votes
3answers
1k views

When to use the different modes of National PE-201C flash?

I have a National PE-201C flash, which has the following guide chart: I kind of understand the chart: if I'm standing 3.5 meters away from the subject and have ISO 100 film, I should use an ...
1
vote
1answer
1k views

nikon d3100 built in flash not working

I’ve been using my D3100 for awhile now. Today I took a few pictures using the flash and everything worked fine. After that I spent some time exploring menu set-up options and played with a few ...
4
votes
3answers
350 views

How can I improve the dull colors in my product photography?

I try to shoot some pictures of apparel, lingerie, cometics on a white fluffy rag or a white paper board with a Canon EOS Rebel T2i + a Canon - Speedlite 270EX II External Flash on a tripod in day ...
3
votes
3answers
304 views

Why does my Neewer external flash take a long time to recharge?

I am using a Neewer TT520 flash with a Nikon D7000. I am new to flash photography. When I mount it on camera I noticed that at times the flash didn't fire. I've spent some time researching it and ...
1
vote
2answers
157 views

onboard flash and external flash, flashing at the same time

Any thoughts as to why my on board and my new speedlight would be flashing at the same time? I have gone through the manuals and nothing seems to suggest a fix.
1
vote
3answers
68 views

Correct flash zoom level for small diffuser box?

I recent bought a Lasolite Ezybox Speed-Lite 22 x 22cm on flash softbox diffuser. I like to try and use manual flash settings where possible (especially on my Yongnuo radio flash which is only ...
3
votes
2answers
204 views

UV-coated vs non-UV-coated flash tube/dome - UV eye hazard?

NOTE: there have been many edits to this question as I understand more and more, so answers might not be totally relevant to the question, sorry for this all... My concern is: all the current flash ...
2
votes
2answers
684 views

How to fix issues with the flash on Nikon D3100?

When I am in M, A, S, or P modes, my flash goes off without needing to. The built in flash is down, also the button won't pop the flash up. The firmware is updated. Does anyone think this is a ...
4
votes
1answer
1k 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 ...
1
vote
1answer
2k views

When to use different combinations of TTL/TTL-BL and Spot/Matrix metering?

I am trying to teach myself flash photography, and I am currently confused about metering modes. In what shooting conditions would each the following metering modes be best-suited? (And why do they ...
1
vote
1answer
89 views

Why are relationships among flash and ambient expressed as percentages but among main and fill expressed as ratios?

Why are relationships among flash and ambient expressed as percentages like 10% but among main and fill expressed as ratios like 3 to 1?
0
votes
0answers
49 views

How can I fire a Sigma 610dg Super with a TriggerTrap Flash Adapter?

I have a Sigma 610dg super flash that I wish to trigger with the TriggerTrap flash adapter (tt-fa1). Sadly I cannot make this work. I have tried two different TriggerTrap dongles but the flash never ...
1
vote
3answers
196 views

When you shoot flash through an umbrella, does it change the color of the flash light?

Does the umbrella cloth (or whatever material it is made of) act as a filter and modify the original color temperature of flash?
0
votes
2answers
163 views

Why do some umbrellas have black cover instead of silver?

Or what is the use of a black cover instead of a silver one? I have the idea that the black (only) removable cover of some umbrellas is rather an incomplete product. Is that so? I'll try to ...
2
votes
2answers
95 views

Practical difference between TTL and flash sensor

On an speedlite 600EX-RT, what is the practical difference between E-TTL II and Ext. A? I know the technical one, but how does it change flash exposure if you measure through the flash sensor rather ...
2
votes
1answer
97 views

How can I use the built-in flash with a legacy prime on a Nikon D3100?

I purchased an older 50mm prime lens to use on my Nikon D3100. I know it will not meter or focus (and I can handle manual focus and exposure etc.) but I cannot get it to fire the on-camera flash. Any ...
3
votes
2answers
412 views

What causes the shadow at the bottom of this photograph?

I just got a new (to me) Nikon D70s to see if the DSLR world is right for me. My dad took this picture of me: In the middle of the bottom there's a rather large semicircle of shadow. Is this caused ...
1
vote
5answers
272 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 ...
1
vote
1answer
137 views

Can I configure my Sony A57 screen and viewfinder display to brighten with a manual flash, just like with the popup flash?

When I pop up the built-in flash on my Sony Alpha 57, the LCD and electronic viewfinder brighten up a lot, so I can focus properly in low light situations. However, when I put on my Yongnuo 560 mkII, ...
2
votes
4answers
150 views

Is this statement By Jim Zuckerman incorrect?

"For the exposure of the foreground, though, the lighting came from the flash only. Therefore, changing the shutter speed didn’t affect the exposure of the subject, since the speed of light is faster ...
0
votes
1answer
108 views

Low light photography: which avenue of gear improvement? [closed]

When you see something to be desired in your photo, it can be as much your technique as the limitation in your gear. But I'm pretty confident that I've hit the limitation of my gear for low available ...