Using FV Lock for Flash Photography

Posted June 8th, 2009 by   |  Flash Photography, Photography  |  Permalink

Ever had people or pets blink when you take flash photographs of them? The Nikon CLS (Creative Lighting System) uses pulses of light to communicate to the remote flashes in your lighting arrangement. These pulses of light are sent out before the shutter opens, so if the subject has fast reflexes, they will often blink from the pre-flashes and your photographs will suffer from a terrible condition called “Preflash blinkosis”. The solution to Preflash blinkosis is to use the FV Lock function on your camera.


Here's a photo of someone blinking from the pre-flashes in the Nikon CLS. One solution to fix the problem is to use your camera's FV Lock function.

Here's a photo of someone blinking from the pre-flashes in the Nikon CLS. One solution to fix the problem is to use your camera's FV Lock function.



Before I get to the details, here’s an email I received a couple days ago from a reader of my recent book on the Nikon CLS.

Hi Mike.  I just bought your excellent book on “The Nikon Creative Lighting System” and have a question which I hope you can answer for me.  I use a D700 and D3, and 4 SB-800 strobes. In trying to photograph dogs, I have run into a “blinking eye” problem. Finally I figured it out:  the preflashes cause the blinking

Question: can I disable the preflash and use this set-up as the old time “TTL” metering?  Or if I hold the shutter at 1/2, will the preflash fire and not fire the main flash?  Then perhaps the dogs will reopen their eyes. 

Any help or ideas would be most appreciated. Thanks, Morton, Arizona, USA.


The answer to Morton’s question is to use the FV Lock function built into your Nikon dSLR. Everyone needs to know that using Nikon flashes in TTL or TTL BL or even Manual will always result in pre flashes if you are operating in the Nikon CLS. What I mean is that if you have an SB-800 Commander (or a camera’s pop-up Commander like the D90, D300, D700) communicating with the remote flashes in channels/groups, then the preflashes are used to communicate between Commander/Remotes and can’t be turned off.

However, there is a great workaround solution that is called FV Lock. You can program one of your camera’s buttons to activate the FV Lock function so that when you press the button, it causes all the flashes in the system to do the preflash at that moment. Then, the camera remembers the Flash Value (FV) and allows you to take the real shot without the preflashes. I do this when photographing pets or kids with fast reflexes who are prone to blinking. 

To program the FV-Lock capability into your camera, you’ll need to go to your Custom Settings Menu (the pencil icon) and find the FV Lock menu item. On some Nikon models like the D70/D80/D90 you can program the AE-L/AF-L button to activate FV Lock. On other Nikon models like the D300/D700/D3/D90, you can program the Func button or the AE-L/AF-L button to activate FV Lock. 


Here's where the Func button is located on the Nikon D300.

Here's where the Func button is located on the Nikon D300.


This is the AE-L/AF-L button on the Nikon D80.

This is the AE-L/AF-L button on the Nikon D80.

Most photographers don’t ever have a need to use FV Lock, but I find that pet photographers run into this issue more often than people photographers. 



60 Comments on “Using FV Lock for Flash Photography”

  • WWW.XMC.PL November 21st, 2020 10:22 pm

    Im certain you had joy scripting this article. Anyway, in my language, there arent a lot good source like this.

  • Dotty Clerf December 11th, 2020 4:55 pm

    Nice post. I learn something totally new and challenging on blogs I stumbleupon everyday. It’s always useful to read through content from other authors and practice something from other sites.

  • January 2nd, 2021 7:20 pm

    Hello, I saw a three of your attention-grabbing posted posts and needed to ask in the event you would be interested in reciprocal pages? Crew have weblog about alexis texas ass! Anyway, in my language, there usually are not much good supply like this.

  • Donwload Script Directories January 7th, 2021 5:24 am

    Is it alright to put a portion of this on my personal webpage if I submit a reference to this site?

  • JamesPiork January 13th, 2021 4:57 pm

    herbal remedies for ed erectyle dysfunction

  • JamesPiork January 13th, 2021 6:14 pm

    cheap medication cheap ed pills

  • JamesPiork January 13th, 2021 7:14 pm

    cheap pills online best natural ed treatment

  • JamesPiork January 13th, 2021 10:23 pm

    viagra vs cialis bodybuilding cvs prescription prices without insurance

  • JamesBoamn January 14th, 2021 5:01 pm

    purchasing cialis on the internet cheap cialis awiwxkjv $200 cialis coupon

  • JamesBoamn January 14th, 2021 10:12 pm

    how to get viagra without a doctor mzcjuald order viagra viagra without prescription

  • JamesBoamn January 15th, 2021 3:16 am

    cvs prescription prices without insurance xizabcpn order levitra ed causes and treatment

  • JamesBoamn January 15th, 2021 7:29 pm

    natural help for ed zzbgengq levitra for sale buy prescription drugs

  • JamesBoamn January 16th, 2021 12:13 am

    cialis tolerance generic cialis online dxqtuzgs free cialis

  • Jamesduers January 16th, 2021 10:41 pm

    azpo price of viagra puzh sdzr

  • Jamesduers January 17th, 2021 3:07 am

    gjmh best place to buy viagra online csct ttvr

  • Lesteranymn January 19th, 2021 1:06 am

    how long does 20mg cialis keep in system zgssatmi cialis vs viagra

  • Lesteranymn January 19th, 2021 6:17 am

    cialis erection penis bisffbwz cialis at a discount price

  • DavidhulgE January 22nd, 2021 10:23 am

    generic viagra without doctor’s prescription buy generic viagra here

  • Geraldjam January 26th, 2021 4:24 am sildenafil 60mg price

  • Geraldjam January 26th, 2021 2:40 pm sildenafil canada prescription

  • Google January 27th, 2021 12:11 am

    Check below, are some absolutely unrelated sites to ours, nevertheless, they are most trustworthy sources that we use.

  • Geraldjam January 27th, 2021 4:11 am cheapest online sildenafil

  • Geraldjam January 27th, 2021 8:00 am sildenafil online sale

  • Joshuavix January 30th, 2021 12:46 am

    cheap generic viagra viagra

  • Joshuavix January 30th, 2021 5:56 am

    viagra buy generic viagra

  • Robertwem February 1st, 2021 9:40 pm

    fda warning list cialis order cialis

  • Robertwem February 2nd, 2021 3:00 am

    cheapest cialis web prices buy cialis

  • LouisCiz February 4th, 2021 4:40 am

    ed pills online ed medications
    erection pills

  • LouisCiz February 4th, 2021 9:56 am

    generic ed drugs ed meds
    ed treatment pills

  • LouisCiz February 4th, 2021 3:25 pm

    best ed drug treatments for ed
    ed drugs list

  • LouisCiz February 4th, 2021 9:04 pm

    cheapest ed pills ed drugs list
    ed pills

  • LouisCiz February 5th, 2021 8:03 am

    best male ed pills ed pills
    best male ed pills

  • LouisCiz February 5th, 2021 1:52 pm

    best pills for ed ed medications
    cheap ed drugs

  • Pianino Programy February 5th, 2021 5:29 pm

    You on the homepage of digg or reddit or some other major web page? Cause your hosting is Seriously sluggish suitable now, atleast for me.

  • Pianino February 7th, 2021 3:49 am

    First-class information it is without doubt. My teacher has been searching for this tips.

  • Google February 7th, 2021 8:40 pm

    Here are a number of the sites we advocate for our visitors.

  • RolandTed February 7th, 2021 10:02 pm

    viagra without a doctor prescription usa where to get viagra
    viagra without a prescription

  • Socjologia Blog February 10th, 2021 6:41 pm

    Good job here. I truly enjoyed what you had to say. Keep heading because you undoubtedly bring a new voice to this subject. Not many people would say what youve said and still make it interesting. Well, at least Im interested. Cant wait to see additional of this from you.

  • GlennJeorn February 11th, 2021 1:40 am

    order vantin order minocin
    order bactrim online

  • GlennJeorn February 11th, 2021 6:00 am

    roxithromycin price sumycin tablets
    omnicef capsules

  • GlennJeorn February 11th, 2021 9:46 am

    omnicef capsules minocycline price
    buy myambutol

  • GlennJeorn February 11th, 2021 1:25 pm

    terramycin for sale myambutol tablets
    order amoxil online

  • earthy February 11th, 2021 1:42 pm

    Your fingers cant be of the same length.

  • Japan Wallpapers February 12th, 2021 6:02 pm

    Cool. Do you have a mailing list? This is what I was looking for. Much appreciated! 😉

  • plaquenil therapy February 12th, 2021 11:02 pm

    erectile disorder plaquenil and bleeding bladder cancer erectile beefs function

  • Norwegia February 15th, 2021 9:55 pm

    Nasze zycie jest takim, jakim uczynily je nasze mysli – Marek Aureliusz

  • zithromax pack February 16th, 2021 6:33 am

    zithromax directions buy zithromax no prescription can you buy zithromax over the counter

  • Richardtemig February 17th, 2021 12:04 am

    cialis canada walgreens price for cialis 20mg
    normal dose cialis

  • Richardtemig February 17th, 2021 5:15 am

    cialis professional cialis pills for sale
    cialis maximum dosage

  • Richardtemig February 17th, 2021 8:22 pm

    walgreens price for cialis 20mg cialis 20 image
    cialis without doctor prescription

  • Richardtemig February 18th, 2021 12:02 am

    cialis dosage 40 mg dangerous lowest price cialis
    cialis prices

  • Tematy Filozoficzne February 19th, 2021 10:54 am

    Thanks for making the effort to make clear the terminlogy to the newbies!

  • Richardtemig February 19th, 2021 2:49 pm

    cialis or viagra prices of cialis
    cialis for daily use

  • Richardtemig February 19th, 2021 8:53 pm

    cheapest cialis web prices take cialis with or without food
    the effects of cialis on women

  • Richardtemig February 20th, 2021 3:17 am

    buy cialis online cheapest cialis web prices
    herbal replacement for viagra/cialis/levitra…

  • Richardtemig February 20th, 2021 9:20 am

    cialis online tiujana cialis
    side effects of cialis

  • Richardtemig February 20th, 2021 3:50 pm

    30 day cialis trial offer what are the side effects of cialis
    cialis tadalafil 20 mg

  • USA Biznes February 22nd, 2021 6:27 pm

    great blog but some pictures will make it better

  • chloroquine prophylaxis February 23rd, 2021 9:25 pm

    cloriquin chloroquine over the counter uk chloroquina

  • Japonia News February 26th, 2021 7:45 pm

    This is some nice stuff. It took me some time to finally find this internet site but it was worth the time. I noticed this website was hidden in bing and not the number one spot. This web publication has a lot of enjoyable stuff and it doesnt deserve to be burried in the search engines like that. By the way I am going to add this weblog to my favorites.

Leave a Reply

© 2021 Visual Adventures | Site Policies | Web by Works Development