Reminder Secure

Lightmeter readings Studio Flash

This thread is being watched by 3 people
Paul Amey is onlinePlatinum Member
12 May 2012 01:26
Glossypinklipstick
Photographer
Glossypinklipstick
Location
United Kingdom
Essex
Harlow

I have been setting up my studio flash settings using the pictogram lazily for many years and decided to do it properly using a seikonic flash meter.
I watched the You tube videos from flash centre and took a reading and followed it. 

i set the settings into my camera and the result was about 2 stops under exposed. I checked it & rechecked it and ended up doing it by eye and ditched the meter.
I checked the iso matched the meter but  ive missed something or the meter is misreading:any ideas

2 elinchroms shooting through softboxes.

I checked its daylight readings against the cameras meter and it seems there or there abouts. If i havnt missed anything, can i test it some how wihout having another flash meter to compare it against.
Paul www.glossypinklipstick.co.uk


Keltica is off-lineSilver Member
12 May 2012 01:33
Keltica
Photographer
Keltica
Location
United Kingdom
Middlesex
Twickenham

What you see on the back of your camera, does not necessarily match how it looks when you import the image onto your PC/Laptop/Mac/Macbook.

Are you X checking by looking at the image presented by the camera, or on your PC.....



Jon E is off-line
12 May 2012 01:40
Bayrunner
Photographer
Bayrunner
Location
United Kingdom
Dorset
Beaminster, W Dorset

One thing that has given me false readings in the past is that the lumisphere isnt totally obscuring the entry lens - thats on a Sekonic 308


Paul Cox is off-line
12 May 2012 01:52
paulcoxphotography
Photographer
paulcoxphotography
Location
United Kingdom
Greater Manchester


Make sure the flash meter is pointing directly toward the camera not the light source. The histogram is a good way of getting a well exposed file the light meter is best for measuring the ratio between light sources IMHO.


Simon Young is off-lineSilver Member
12 May 2012 02:19
Allinthemind
Photographer
Allinthemind
Location
United Kingdom
Gloucestershire


Sounds odd. Which meter? Did you switch to the flash mode? Have you got any filters on your lens? Is the main light fairly frontal? Did you pich the measure button, then let go, see the flash symbol flashing then fire the lights?

Si
In the "Information Age", continued ignorance must be a choice motivated initially through inherited beliefs.


Oscars Photostudio is off-line
12 May 2012 04:01
oscar
Photographer
oscar
Location
United Kingdom
Cheshire
Nr Warrington

Which You tube video - link please.

How are you firing the flash head?
Which meter? Have you checked the battery? As previously mentioned is the disc fully in position?
Are you measuring for one or two or more lights? From the models position?


Chris Corbin is onlineSilver Member
12 May 2012 05:02
corbystock
Photographer
corbystock
Location
United Kingdom
Hampshire
New Milton

what camera/settings? I only say this because i dropped a bollock once shooting jpeg but had D lighting enabled (D90). I also had two cameras once, 5d & d90 it was fine for the d90 but way under cooked for the 5d ( never got to the bottom of that one ). Another mistake was the dome not being in the correct position as suggested above.
There is a chance that everything I just said is complete bollocks


RGBphoto is onlinePlatinum Member
12 May 2012 06:09
magpie1
Photographer

Location
United Kingdom
Tyne and Wear
Newcastle

In terms of "in camera" exposure accuracy the histogram is the only anywhere near accurate guide. If you are using the meter in incident mode it should be used with the dome, at the subject position, being careful that nothing is shading the dome, pointing towards the camera, you are measuring light incident upon the subject not the reflected light. Another thing to bear in mind is that the calibration of most meters is still in the 'film' bias, which tends to have an inherently wider dynamic range than most digital devices, commonly about (if you have a top end Phase One back it has enough headroom} some Sekonic meters allow quite elaborate calibration to match the meter to the camera, best used in reflected, particularly spot meter mode.


Simon Young is off-lineSilver Member
12 May 2012 07:59
Allinthemind
Photographer
Allinthemind
Location
United Kingdom
Gloucestershire


Quote from magpie1
In terms of "in camera" exposure accuracy the histogram is the only anywhere near accurate guide. If you are using the meter in incident mode it should be used with the dome, at the subject position, being careful that nothing is shading the dome, pointing towards the camera, you are measuring light incident upon the subject not the reflected light. Another thing to bear in mind is that the calibration of most meters is still in the 'film' bias, which tends to have an inherently wider dynamic range than most digital devices, commonly about (if you have a top end Phase One back it has enough headroom} some Sekonic meters allow quite elaborate calibration to match the meter to the camera, best used in reflected, particularly spot meter mode.



Pointing towards the camera will give good exposure on the 3d thing pointing rowards the camera, you need to take a view on the angle of the lightmeter depending on what you want to expose normally (I usually point halfway between main light and camera), using the flat plane can give measurements for the plane that you hold it parallel too.
Lenses usually account for 1/3-1/2 stop of transmission loss, which you can take into account. Generally for Sekonic, if you open up 1/2 - 2/3rds of a stop, you'll be about right for a RAW shot.

Si
In the "Information Age", continued ignorance must be a choice motivated initially through inherited beliefs.


Andy_B is onlineSilver Member
12 May 2012 08:11
Andy_B
Photographer
Andy_B
Location
United Kingdom
London
London

The problem metering with the histogram is that on most cameras the histogram doesn't represent the actual range of RAW exposure values coming off the sensor - it represents the values after JPEG processing. This can give you an incorrect view of over/under exposure.

That said, with a digital camera the actual image is a better guide to exposure than a light meter will ever be. Unless you're a luddite who only shoots JPEG and doesn't want to do any post-shoot correction, image capture is really an 'engineering problem' of trying to maximise the sensor's dynamic range by exposing to the right but avoiding too much clipping. This is different to the approach taken with film, and trying to match a light meter with an un-calibrated camera will often give poorer results.

I agree with Paul - that the best use of light meters today is to understand lighting ratios.



313 Users currently online   Blue=Models Orange=Photographers Red=Agencies Purple=MUA/Stylists Grey=Studios Green=Moderators
amber6 amy1989 angelique110 angelmay annabelle1988 Annakalek annierosex aylasky babY_green barbara4567 beckydee bigboobs12 brightonblonde charliecook5 Chloe_l christine_love clairegibbo100 cody constancepeach corrall CupCakes94 dalzellsophie DareMeDD dirtyjohn511 Dolly_gaga EmmaAurora Emmagreenmodel EmmaShamaya Enigmatise1981 fionafelony franka gizmofoxy icandyNJPModel indie11 ivanadrovka Jadedred jemimavonkat Jennywren Jessica25 Joceline JodieEllen jodunn32 johnmanchester JYardy29 kateee2610 KaylaJo kaylee13 Kimmy99 kimmyx lilybaby LouiseModelling mandymack Marcus27Larsen maya_homerton melaniebrooks Melissahayward melx missloulou mollydoublybarrely mzcurvy Nicolepount pipster Pretty_Rose princesscarly Prinzessin88 rattusrock REDXXX RooMorgue RoxyMendez sami_c samrichardson Saphire07 Saphirerox saradiane sarahjane94 scarlettmarch2010 Sexy_cate Sexysteph shazza09 softgentle Stacey146 stefan_braydon Suz337 SuzyMonty Theenglishrose tiffanygemma tinkerbell1986 tinki05 vickyl weepee19 xcarleyx xdiamondx
2BridgesPhotography a_boix ajocelot Ajsphotographic albumzd AlexJ Andy_B Andyphotography anthonyh anthonyscorpio antoinewynn aoxomedia aprilscherz3 aztekia badger bamfordphotography bartman11 bazzah beachview beezy bernadinism BGP Bigfish3311 bigphilphotography Blacklion246 blades19800 borojohn boxy bradder brianappleyard bryslot CanonpicsParayphotos casell cherry_blossom_media chymera Claypaws Clickrshots Cmags conceptol9 corbystock cos08 Crippen cupid671 daveb david_57 Davidhepworth davidhunt decephotos delyons Dickymint digitalis DJG donaldmac eds209 elitetv eol eosfan epsmith Eviesmithphotography exodus fiendarella FlashBangWallop forden_photo fotoinsp fotorico foxpix frankpg frenchyphotographer Gaudinio Gavrelle gazzer59 GDPics gerry99111 gfindlay Gfsphotography globus glossypinklipstick grisey gshocker30 gunnergraham happysnapper06 Hioctane hk500 hphotography hughspictures4u humphries hymerman iestyn imageatthemill imagelincs istobie J_T_S_F jackw jaejay Jake41 jakeyboy jameslarkinphoto Jaywirksworth jazzweber jbs1 Jeffers johnb63 johnmphoto johntisbury jrdphotography Kai14 kaosrox Keith_H keithfusco Kizer KNFOTOG Ladiesman ladylikemedia leicesterstargazer Lenscap LGI lke ltphotography lysander Magpie1 mango14 marcodaros markho marksilvester markwalden marshon martinmacchina martinphoto Mauricesimagery maxpax99 maz01 mcarthur MelPet mephoto mikeclark mitch69 MoonDragonPhotography mr_fold_sir_08 mr_mick myp55 neonkarma nicholas_ainsley nigel nik_guy nik300 northimages panda49 parlour_photo Paul_Jones Peerless Pellium pentax5ac peteb phillken photoclassic photogeniczx Photographybyfleur photolambert Photorol Phtosham pope10001 ps_photo Qandrew quad1 raven60 RazorSharpImages rembrandt rickspixuk ritchie RobCarter robertatkeltphoto RobGolding RobH roger1944 ron Ron_H Rscott360 russb russbenwalker sammylhel shank_ali shinywear shivyg Simm6 sjarcher skinz skpbus Snappy1991 solway Sp_digital sportingarts squirty star_shots stavros stephenmuddell Steve_Stanford stevegosh stevehos1 stiletto stuartb SurrealNudes szmytke tarmoo Taximan TerryXX99 thestarglider TheStudioMk tin Togsrus tomophotography Travellingtoast tregonning_photos usha13 vandervelden vltavakrtek w4pictures ziggypot
forummoderator grailmodels
burrough truedefinition