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Photographing shiny objects

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    PR
    PR  6181 forum posts England
    30 Nov 2011 - 5:32 PM

    Hi,

    I wondered if anybody could give me some advice when photographing a shiny/reflective subject.
    I am trying to photograph an electric guitar and want to try and enhance the shapes of the furniture on the instrument and also bring out the natural reflections in the wood but without getting those awful specular highlights.
    I have tried but with little success so far.
    I am using two flashguns.( SB800 and 600) with there diffusers down and shooting in manual mode with radio triggers.
    I am in a room with low light (curtains drawn) so I can give some atmosphere to the image just by using the light emitted from the flashguns.

    If anybody could give me some advice it would be gratefully received

    Thanks
    Phil

    Last Modified By PR at 30 Nov 2011 - 5:36 PM
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    30 Nov 2011 - 5:32 PM

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    Pete
    Pete Site Moderator 1318430 forum postsPete vcard ePz Advertiser England96 Constructive Critique Points
    30 Nov 2011 - 5:37 PM

    A polarising filter can help but as you're using flash you can't see the effect it has until the shot is taken. Try holding a torch or reading light from the position of the flash to see the highlights and the affect a polariser will have.


    A soft box or large diffuser panel can help reduce the direct light of the flash. You can buy softboxes, or if you're just after a makeshift effect grab a white sheet and hold that a foot or so in front of the flash to create a soft effect. Experiment with it at different distances from the flash to see how it affects the highlights.

    mikesavage
    mikesavage  12232 forum posts England2 Constructive Critique Points
    30 Nov 2011 - 6:39 PM

    Be aware that any reflections from a metallic surface will be unaffected by the use of a polarising filter.

    User_Removed
    30 Nov 2011 - 10:54 PM

    Don't use flash. You don't know how they will reflect when you compose the subject and arrange the flash positions.

    For a still life like a guitar, longer exposures are no problem, so use continuous lighting so that you can see the effects and any reflections before pressing the button.

    And, if you are using normal household lamps, you can adjust the WB of your Raw file in software.

    .

    Last Modified By User_Removed at 30 Nov 2011 - 10:55 PM
    Hugo
    Hugo  9635 forum posts United Kingdom
    30 Nov 2011 - 10:58 PM

    Bounce the flash off the ceiling???

    ianrobinson
    ianrobinson e2 Member 41107 forum postsianrobinson vcard United Kingdom8 Constructive Critique Points
    30 Nov 2011 - 11:24 PM

    Personally as mentioned above, don't use flash and keep away from any harsh light source use tripod and a longer exposure if required.
    Window light can be a really nice source of light if you feel the need for light on the subject and if thats too harsh put a thin white bed sheet up at the window, this will act like a defuser.

    Nick_w
    Nick_w e2 Member 73801 forum postsNick_w vcard England99 Constructive Critique Points
    1 Dec 2011 - 7:05 AM

    Flash shouldn't be a problem - its just a light source. When you say diffuser do you mean the dome diffuser that comes with it? These arnt really what you need.

    You will need to soften the light to avoid the specular highlights, softbox / shoot thro umbrella something like that ( if you don't have any improvise, muslin, bed sheet etc).

    Also think about the lighting angles and where the spec highlights are. It's not like film days, just check the review screen then alter the lights accordingly.

    All that said there's a lot to be said for natural light.

    Sometimes specular highlights can be good. For example in out of focus areas they produce some great bokeh - particularly with prime lenses at wide apertures.

    Last Modified By Nick_w at 1 Dec 2011 - 7:11 AM
    hobbo
    hobbo e2 Member 3772 forum postshobbo vcard England2 Constructive Critique Points
    1 Dec 2011 - 8:10 AM

    Don't use a flash, just diffused lighting....or..............if you wan't to use flash make your own diffuser/s to fit over the flash:

    I take Macro shots of shiny insects and made an excellent diffuser snoot from a cheap Poundland tranluscent plastic water jug:

    The base of the jug was carefully cut out to fit over the flash, the top side (when fitted) is lined with kitchen foil and the layers of tissue kitchen towel (according to diffusion required) is held on the whole with elastic bands.....it works like a dream and costs almost nothing:

    You can use ice-cream containers in the same way too.........it all depends on what off camera flash you are using:

    I find the setting.............S 160 and A 16 ideal for insects......I don't know about guitars:

    Have fun!

    Hobbo

    thewilliam
    1 Dec 2011 - 11:36 AM

    This task is much easier if done in a studio. I used to assist a photographer who did the catalogue shots for a trophy company.

    If you just use a light-tent or other ultra-soft lighting, the product won't have a clearly defined shape or texture. We used to introduce carefully shaped pieces of coloured card into the set so that their reflections defined the shape.

    Kentoony
    Kentoony  2 United Kingdom
    1 Dec 2011 - 10:33 PM

    25 years ago I used to use a product called anti glare spray try http://www.stanleysonline.co.uk/product-1410.htm

    stratocaster72
    29 Dec 2011 - 3:16 PM

    Hi
    Light: Science and Magic is your friend here Smile
    Im only halfway through but it as an amzing resource for all of this sort of stuff. If only i understood it all lol.....

    I think (someone correct where ive gone wrong....)
    You need to eliminate direct reflection, so the light has to be outside the family of angles (which spreads from the angle of incidence-ish), so make sure your big diffused softbox or whatever is outside this angle. In practice this means judging the line in your head that the reflection of the light path will bounce off the guitar (or from camera to guitar and out, as if the camera was the light). If you make sure you position the light outside that angle it should avoid the direct reflections.

    This might end up a bit flat however, as some direct reflection might help shape the guitar, especially if its glossy, so you could use a second light inside the family of angles, or gobo the big light so that you effect both.

    This looks a lot easier than it sounds when you see the diagrams, im useless at trying to repeat the details without having it to hand.....
    Of course in the past i would just have guessed until it looked right, but its quite cool knowing the science behind it (or rather not knowing, but having a vague idea, as in my case).

    madmitchy888
    14 Jan 2012 - 11:36 PM

    I photograph alot of billet metal / plastic products, i find angles are everything using constant light sources

    rob_marshall
    14 Jan 2012 - 11:43 PM

    Either use a sheet as Pete said, or try bouncing the light off large reflectors

    lawbert
    lawbert  71684 forum posts England15 Constructive Critique Points
    15 Jan 2012 - 3:36 PM

    Some excellent ideas here and I really like the idea of the polariser as I have been meaning to take some decent pictures of my Bass which has a quilted maple face which is hard to capture the depth of the grain as its covered in a very deep polyester lacquer, as is the graphite neck.

    I tried a quick picture by bouncing a 580ex II speedlite off the ceiling which has cut the highlights down to a minimum but they are still there.

    kingbass.jpg

    And one with natural light which has even more reflections but still hasnt done the quilted maple justice.

    kingbass2.jpg

    Im considering lighting the bass with a very low powered diffused or bounced flash a section of the bass at a time and then combining all the images into one final image in photoshop...Does anyone have any ideas on this?

    66tricky
    66tricky  7742 forum posts Scotland
    15 Jan 2012 - 6:33 PM

    Use a polarizer over the lens and try to find a piece of polarized sheet that you can place over the flash. By orienting the polarisers at 90 degrees to one another you can eliminate all reflections (except those from metallic objects). This is known as cross polarisation. You can control how much reflection is removed by altering the rotational position of the lens filter.

    Old LCD screens a are a good source of polarising sheet. you can also find it on Ebay.

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