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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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1answer
1k views

How to use the safety shift custom function with a flash on a Canon 5D Mark II?

I do a lot of available light photography with f/1.2 and f/1.4 lenses. I use the "safety shift" mode (C.Fn I-6), which works great in combination with shutter priority mode (Tv). For example, I can ...
5
votes
3answers
2k views

Why does my 420EX Speedlite sometimes fail to start up?

I have a Canon 420EX Speedlite that sometimes won't start up. When it's not working, it behaves as if it didn't have any batteries in it... just totally dead. The odd thing is, it doesn't seem to be ...
5
votes
2answers
226 views

Can Nikon flashes display flash power used right after a shot was taken?

I'm trying to compare two camera bodies (Nikon D90, Nikon F100 (digital and film)) with respect to TTL flash power in different situation. I came to know that few Canon flashes can display the flash ...
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votes
5answers
634 views

Flash's duration and freezing motion

This question connects with my previous question: Why do cameras that film with high FPS rates cost a lot? I just read that a normal flash illuminates a scene within a 1/250th of a second. (A flash ...
4
votes
3answers
3k 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 ...
4
votes
3answers
7k views

Why is my camera limited to a shutter speed of 1/250th when the flash is up?

Sometimes in bright backlight and with large aperture (f2.8) I want flash at high shutter speeds. But when I pop the flash up on D7000 it caps the shutter speed to 1/250th, which overexposes the ...
4
votes
2answers
281 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 ...
4
votes
3answers
1k views

What is the difference between a hard plastic and soft material flash diffuser?

As far as image results go, what is the difference between a hard plastic diffuser and a soft material diffuser? Also, as far as usability goes, does one last longer and/or create fewer problems than ...
4
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3answers
290 views

Why isn't the on-camera flash of SLR or compact cameras tiltable?

All external flash tilt, and isn't it simple and apparent to add this to the design? I mean, take a look at this horror...
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3answers
322 views

What to look for in a starter-level off-camera flash?

I have zero experience with flash and want to learn how to use it from zero, for example by following the Strobist blog. What are the absolutely necessary specifications I should look for when ...
4
votes
3answers
502 views

Does the internal structure of an umbrella-type softbox impact light quality?

When using an umbrella type softbox (a softbox that opens like an umbrella like this one) used with a cobra flash or a light bulb that is INSIDE the softbox : does the tripod tube and the light ...
4
votes
3answers
789 views

Why are there multiple contradictory ways to control flash ratio?

I am reading the following introduction to flash photography: http://www.cambridgeincolour.com/tutorials/camera-flash-2.htm In this article, I came across two seemingly contradictory statements: ...
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votes
2answers
259 views

What's the point of a removable umbrella cover?

I'm new to off-camera flash and looking to buy some gear (stands, umbrellas, etc.). I've seen some umbrellas that have a removable black cover, like this one: I assume that you add the cover when ...
4
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2answers
159 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 ...
4
votes
2answers
602 views

Is it necessary to have a macro ring flash to take macro photos?

I just got a macro lens but it turns out the subject is not bright enough. I am wondering if I need to buy a macro flash for macro photography? The flash seems expensive and I am wondering if it is ...
4
votes
1answer
320 views

Where does the assertion that food photography must not use flash come from?

I often hear/read in webcasts and blogs that when doing food photography, it's better to use only the indirect sun light from a window, and without flash. Why? I tested multiple times two setups: ...
4
votes
3answers
490 views

Will an external flash for Pentax K-7 work for Pentax K-5?

I'm looking for a cheap flash, and found this one. It states that it works for Pentax K-7; will it work for my Pentax K-5 as well? I don't know what to look for in the specifications.
4
votes
2answers
656 views

How can I fire both a wireless trigger and an on camera flash at the same time?

I have three cactus v5 remote triggers. I also use Canon equipment. I want to be able to fire both a wireless trigger and an on camera flash at the same time. The wireless trigger would fire an off ...
4
votes
4answers
2k views

Why does my Canon 60D sometimes lengthen exposure when using the flash?

In low light conditions, my first shot will often be handheld with no flash. If there's not enough light however, the shutter speed can be too slow and I'm not steady enough for a crisp image - so ...
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
1answer
218 views

How do I auto-focus an EOS M when stopped down to kill the ambient?

I'm trying to do take some portraits with two off-camera strobes. I want a dark background, so I'm using a high f-stop and high ISO to kill the ambient, relying on the strobes to light the model. But ...
4
votes
1answer
139 views

Why is my Canon DSLR's shutter speed slower than what I've set in Tv mode?

From what I understand, when in Av mode, the flash behaves largely as fill flash - the exposure is more or less set as if no flash is in use. However, in Tv mode, the manual suggests the shutter speed ...
4
votes
2answers
152 views

Are there any guidelines on how to prevent the flash from overpowering the scene?

I know the technical aspects of controlling flash power: increase or decrease flash exposure compensation, and if that doesn't work, increase or decrease shutter speed, and use more flash power for ...
4
votes
2answers
196 views

Will using a CTO gel help make my flash less distracting in a cafe?

I sometimes encounter a situation where using a flash would greatly enhance the pictures because of the low ambient light, but I don't use the flash as it is mighty distracting in a low-light cafe/bar ...
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votes
1answer
280 views

Will a low-cost macro ring flash be useful for portraits?

A friend of mine wants a flash for her camera (Cannon 650D), and we want to buy her one for her birthday. She also said she wanted a ring flash (I think she was referring to the Orbis ring flash). ...
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votes
2answers
4k views

What is the difference between a “slave flash” and “master flash”?

My Nissin Di866 II flashgun supports operation in both "slave flash" and "master flash" mode. The former I know needs to be used with a Nikon DSLR's "Flash Commmander" mode. What's the latter mode? ...
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2answers
2k 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 ...
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votes
5answers
4k views

What third-party speedlite/flashes are available for Nikon?

I'm looking for a flash with a budget of < $200. I have a Nikon D3100, and I'm a beginner with photography, who is taking some classes and wants some flexibility with a decent bounce flash. I was ...
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votes
2answers
61 views

Why is shutter speed almost always too long with my Panasonic Lumux GH4 in iA mode?

I recently purchased the Lumix GH4 and I am having problems with indoor flash photos. I have a zoom lens that I rarely use, a Leica DG NOCTICRON 42.5mm/F1.2, and a Leica SUMMILUX 25mm f/1.4 Lens. ...
4
votes
3answers
295 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 ...
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votes
3answers
1k 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 ...
4
votes
1answer
104 views

What to look for in a flash battery pack?

I have never had one but have seen it on flash stands of other photographers. So my assumption is that it brings more power to faster recycle time to shoot faster with flash. I wanted to buy one but ...
4
votes
1answer
2k views

How do the Sigma flashes compare to (and work with) Canon flashes on Canon bodies?

Sigma produces some very powerful flashes, like the Sigma EF-610 DG ST and Sigma EF-610 DG Super, that cost a fraction of what Canon charges for their Speedlite of same guide number. I'm already ...
4
votes
3answers
781 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 ...
4
votes
2answers
214 views

Does the diameter of openings on photographic lighting grids affect brightness?

I was kind of thinking about different grid options considering the depth vs diameter of individual openings and get to a interesting point (at least for me :-) ). Let's consider a very simple home ...
4
votes
1answer
653 views

How does dragging the shutter work?

I am reading a photography book which talk about dragging the shutter when a flash is used. It just tell me how to do this trick but doesn't explain why. Can someone here tell me more about how it ...
4
votes
2answers
1k views

Nikon D40 and yongnuo yn-560 ii external flash. Slow shutter speed issues

I bought a new flash last week and started using it with my Nikon D40 yesterday. The flash is the yongnuo yn-560 ii. I had a tough time to photoshoot. I was indoors and shooting on A mode. Many ...
4
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2answers
339 views

Why does the ISO change with the shooting mode when the aperture and shutter speed are constant and using a flash?

I have a canon 60d, Canon EF-S 17-55mm f/2.8 IS USM lens, and a Canon Speedlite 430EX II TTL flash. I like to use the manual modes, such as Av and Tv but I am having some difficulties when using the ...
4
votes
2answers
9k views

How differently should I use a flash with film camera?

I will be using flash with a film camera for the first time. I've some experience with on and off camera flash with digital camera and film camera for landscape pictures. Now I do not know what are ...
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 ...
4
votes
1answer
1k views

What third party Speedlites work best with Canon?

I am currently picking out a flash (speedlite) for Canon XSI. There is a number of third party flashes available from manufacturers other than Canon. They all claim to be Canon compatible but I have ...
4
votes
1answer
81 views

Yongnuo YN-685 underexposure issue in bounce mode at longer focal length

I just purchased a new Yongnuo YN685 to replace a trusty but old Canon 580-EX (the original, not the II version) that is misfiring and may be on its last legs. After playing with it for a few ...
4
votes
1answer
150 views

How to set up lighting when using a fog machine in the background of the model?

I did some search in the website about the topic and for example found this link but still my situation is different! Best way to create fog outdoors? I am using a fog machine and two strobes ...
4
votes
1answer
261 views

How can I avoid light bleed in a studio shot?

I have a simple white backdrop setup with two off camera flashes setup. One flash is pointed directly at the background to overexpose it to white. The other flash is off camera to the right, shooting ...
4
votes
1answer
479 views

How should I set up a flash bracket for Pentax?

I have a Pentax K-r and a Metz mecablitz 50 AF-1 digital flash unit, and I've been having problems with red-eye. As a result, I'm considering getting a flash bracket. I am aware that I can simply ...
4
votes
2answers
181 views

Can I trigger an optar 152M manually?

First off, I know nothing about flashes. I have an optar 152M flash that fits on top of the camera, and I want to trigger it manually. The flash seems to have a contact where it fits onto the ...
4
votes
1answer
286 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 ...
4
votes
1answer
959 views

Nikon D800 Wireless i-TTL range

I have been experimenting with my new Nikon SB-910 speedlight using the Wireless i-TTL Advanced Wireless Lighting System that nikon has kindly built into the D800, which i believe to be radio based ...
4
votes
1answer
730 views

Should my speedlite burn through batteries when not in use?

I got a Canon Speedlite 430 EX II just a couple of weeks ago and noticed a surprising and annoying feature: If I leave batteries in the flash unit, even with the flash switched off and removed from ...
4
votes
2answers
253 views

How to use in-camera AF light, instead of speedlight AF light?

I have a Nikon D3100 and a Yongnuo YN467 speedlight. What I need is to use thee AF light from the camera body, since I realize it is really better than the speedlight one. Is there any way to achieve ...