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  1. #1
    Join Date
    Dec 2007
    Posts
    2,562

    Mixing flash with ambient

    There wasn't a lot of ambient light in the room. I shot these at different setting.


    Frank

    Iso 200, f/8 at 1/125



    Iso 400, f/18 at 1/4



    Iso 800, f/18 at 1/10



    Iso 1600, f/22 at 1/15



    These were all taken handheld with my Tamron 17-50 lens
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  2. #2
    Join Date
    Dec 2007
    Posts
    1,759
    Try lowest f stop...lower flash comp or flash level...to blur out the background

  3. #3
    Join Date
    Dec 2007
    Posts
    2,562
    I will try that next time. I shot these with the flash on 1/4 power. I will lower the flash power and the f stop.

    Frank
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  4. #4
    Join Date
    Dec 2006
    Location
    God's Country - Australia
    Posts
    10,421
    i havent got time to do the math but it looks to me like the exposure of all of them is exactly the same. all you've done is alter the components.

    ie:
    iso400, 1/250s, f5.6 is the exact same exposure as iso1600, 1/60s, f5.6 which is the exact same exposure as iso200, 1/125s, f2.8
    altering of exposure means that you alter the result of your variables, (SS, Aperture, ISO). not use different variable values for the exact same result.
    D800e l V3 l AW1 l 16-35 l 35 l 50 l 85 l 105 l EM1 l 7.5 l 12-40 l 14 l 17 l 25 l 45 l 60 l 75
    flickr

  5. #5
    Join Date
    Dec 2007
    Posts
    2,562
    Quote Originally Posted by Rooz View Post
    i havent got time to do the math but it looks to me like the exposure of all of them is exactly the same. all you've done is alter the components.

    ie:
    iso400, 1/250s, f5.6 is the exact same exposure as iso1600, 1/60s, f5.6 which is the exact same exposure as iso200, 1/125s, f2.8
    altering of exposure means that you alter the result of your variables, (SS, Aperture, ISO). not use different variable values for the exact same result.
    I realized that after I started editing them. I just shot a few more images I am going to edit. I am going to keep trying different settings to see which looks the best.

    Thanks Again
    Frank
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  6. #6
    Join Date
    Dec 2007
    Posts
    2,562
    Here are a few more images.

    Frank

    Flash set to 1/4 power
    Iso 400, f/5 @ 1/160



    Flash set to TTL
    Iso 100, f/2.8 @ 1/160

    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  7. #7
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    Frank, there's absolutely no point popping away and hoping to hit on a good combination. Just like any other image, you need a plan.

    For instance, why choose to shoot at f/18 and f/22 unless you required the DOF offered by that aperture, which you clearly don't; even at f/2.8 the DOF is still adequate. All you're doing is throwing away the resolution offered by this lens which is already dropping off by f/8.

    Do what you normally do Frank, in (A) mode let DOF/sharpness decide your aperture, probably f/5.6 for maximum resolution (with this lens) or you may decide on f/4 with that background seen in the first set of images (better still pull the plate forward as well).

    Is the shutter speed OK? adjust it with ISO if required. You're only worried about camera shake and possible ghosting from the ambient light although you did say it was low.

    For starters, stick with TTL and let the camera do the work using flash compensation to make the fine adjustments.

    In the latter two images we can see that TTL did a better job of softening the hard edged shadows evident in the (M)anual mode shot though I'm guessing you had a lot more ambient.

  8. #8
    Join Date
    Dec 2007
    Posts
    2,562
    Quote Originally Posted by Peekayoh View Post
    Frank, there's absolutely no point popping away and hoping to hit on a good combination. Just like any other image, you need a plan.

    For instance, why choose to shoot at f/18 and f/22 unless you required the DOF offered by that aperture, which you clearly don't; even at f/2.8 the DOF is still adequate. All you're doing is throwing away the resolution offered by this lens which is already dropping off by f/8.

    Do what you normally do Frank, in (A) mode let DOF/sharpness decide your aperture, probably f/5.6 for maximum resolution (with this lens) or you may decide on f/4 with that background seen in the first set of images (better still pull the plate forward as well).

    Is the shutter speed OK? adjust it with ISO if required. You're only worried about camera shake and possible ghosting from the ambient light although you did say it was low.

    For starters, stick with TTL and let the camera do the work using flash compensation to make the fine adjustments.

    In the latter two images we can see that TTL did a better job of softening the hard edged shadows evident in the (M)anual mode shot though I'm guessing you had a lot more ambient.
    I see what you are saying. The images with the white background were don on my dinning room table and there was an overhead light. I did like the TTL shots better. If I use TTL I don't have to wrooy about setting the flash power low enough to use a lower f stop. I think i am getting a grip on it now.

    Thanks again
    Frank
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  9. #9
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    With manual flash you can only double or half the power so you need to vary the distance to get smaller steps.
    TTL can quench the flash for any required duration.

  10. #10
    Join Date
    Dec 2007
    Posts
    2,562
    I never thought about moving the light.LOL I am loosing my grip.LOL

    Thanks Again
    Frank

    PS You have a spare room to rent me so you can tutor me one on one?????
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

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