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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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3answers
208 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
185 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
132 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
119 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
772 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
942 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
391 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
957 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
249 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
262 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
535 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
558 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
238 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
677 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
281 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
206 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
121 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
53 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
170 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
581 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 ...
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1answer
77 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
38 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
158 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
116 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
82 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 ...
1
vote
1answer
574 views

How do I know if it's safe to use an older film flashgun with a modern digial camera?

I've read from many sources that film flashguns won't work with newer digital cameras due to voltage differences and timing differences (and trying may in fact damage my camera), however I have heard ...
2
votes
1answer
93 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
295 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
251 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
125 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
147 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
106 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 ...
2
votes
2answers
85 views

To get a main to fill lighting 3 to 1 ratio you divide your main f/ number by 3?

I have read this information off a popular Photography site ; I am confused because I tought that for a ratio of 3:1 you need to set your main light to say: f/8 and your fill only one full stop down, ...
0
votes
2answers
577 views

Why does ETTL occasionally fail with my Canon Speedlite 580 EXII?

I have the Canon Speedlite 580EXII for 3-4 years now, and I have used it with a 450D and more recently with a 60D. With both bodies, there was a very weird behavior where ETTL or even TTL will ...
4
votes
2answers
2k views

Why is there a preflash from a built-in flash when using remote flash only?

When using Nikon D7000 with an off-camera SB600 (which cannot be used as commander) in TTL mode, the built-in flash must be opened to make it work (to serve as a commander), even if this built-in ...
0
votes
2answers
81 views

Canon Flash Slave: 550 or 430 ex ii

I have a Canon 580 exii, now i am looking for a cheap slave either canon 430 mark ii or canon 550. not sure what should i pick?
1
vote
3answers
145 views

Is this tutorial about fill flash percentage wrong?

I saw an interactive tutorial at http://www.sekonic.com/classroom/fillflashtutorial.aspx,, it talks about how to control the proportion of fill flash relative to ambient light. In it, they illustrate ...
0
votes
2answers
50 views

Why won't shutter release when in flash mode?

I bought a used Nikon D3100 and cannot get the shutter to release in flash mode. The camera works great as long as it is not calling for flash. Not sure what to try or do.
27
votes
8answers
50k views

Is camera flash actually harmful to infants or newborns?

I just got a new off-camera flash, and the instruction manual says: Never fire the flash unit closer than 1 meter from infants. This was a little startling to me, since one of the main reasons I ...
1
vote
1answer
74 views

Why does my flash keep turning itself off?

I attached my Canon 580EX flash to my Canon 6D this evening to take some Halloween shots. Although body and flash usually work seamlessly together, tonight I noticed that the flash kept turning itself ...
1
vote
2answers
509 views

The best flash setup and postion for a portraits and groups shots in a low light room?

I am an beginner photographer and I was "hired" to cover a company final year party. The idea is take group shots or portraits and print "on the fly" the pictures, then the guests can see and take the ...
4
votes
2answers
2k views

How does Yongnuo RF-603c compare with Cactus V5 wireless trigger?

I have the chance to pick up a set of second hand Yongnuo RF-603c or Cactus V5 wireless flash triggers for more or less an equal price. My plan is to use those triggers in combination with a ...
1
vote
2answers
425 views

Overexposed images when using ring flash

I am somewhat of a newbee to photography, but I have a Sigma EM-140 Ring Flash with a 18-250mm Sigma lens. In short, when I use the camera with the ring flash I can't get it to take photos that ...
1
vote
2answers
149 views

PC Terminal vs Hot Shoe

It says here, PC Terminal and Hot Shoe are both types of flash sync connections. If that so, then what are their differences and primary uses? I'm a little confused about it because I understand ...
8
votes
4answers
3k views

What is the quantative relation between flash guide number and ISO?

I found that formula on the Internet: Guide Number = (Shooting Distance * Aperture) ÷ ISO Sensitivity Is it correct? If it is could someone please explain why ISO is related to guide number in this ...
6
votes
4answers
7k views

How do I light a photo booth with a single flash and an umbrella?

I run a photobooth for a friend at a party for a side job and last night we came across a predicament. We only were able to use one flash on a tripod, instead of the usual two, along with the camera ...