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Thread: It's either Medusa or a Triffid, Your choice.

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    It's either Medusa or a Triffid, Your choice.

    It's either Medusa or a Triffid, Your choice.

    ISO 100 ~ Shutter Speed 1/6s. ~ F/14 ~ Natural Light ~ Sony Alpha a68 ~ Tamron 90mm 272E

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    Re: It's either Medusa or a Triffid, Your choice.

    Good clear well exposed shot, Brian.

    The rearmost parts are getting soft but in this particular case I don't think that is a problem because it tends to give something of a perspective effect. The front parts are well focused and that is what matters.

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    Moderator Manfred M's Avatar
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    Re: It's either Medusa or a Triffid, Your choice.

    I know you like the dark and moody look, but it looks like you are starting to get some fairly serious clipping in the green and blue channels in this image.


    It's either Medusa or a Triffid, Your choice.

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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by Manfred M View Post
    I know you like the dark and moody look, but it looks like you are starting to get some fairly serious clipping in the green and blue channels in this image.


    It's either Medusa or a Triffid, Your choice.
    I do indeed like it for some shots.In this case it was sunny and the only way to capture the beauty of the center was to seriously underexpose the rest of the shot. The green and the blue were clipped on the dark side but the histogram was well built but built to the left.

    And the center has minimal green and blue and looks pretty good the way it was exposed?

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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by Geoff F View Post
    Good clear well exposed shot, Brian.

    The rearmost parts are getting soft but in this particular case I don't think that is a problem because it tends to give something of a perspective effect. The front parts are well focused and that is what matters.
    I could have gone to F/16 but at 14 I get that extra bit of sharpness that I felt the shot needed. There was just enough breeze to make stacking not a good plan

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    Moderator Manfred M's Avatar
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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by JBW View Post
    I do indeed like it for some shots.In this case it was sunny and the only way to capture the beauty of the center was to seriously underexpose the rest of the shot. The green and the blue were clipped on the dark side but the histogram was well built but built to the left.

    And the center has minimal green and blue and looks pretty good the way it was exposed?
    Carefully said, remember your colour theory - the complement of green is magenta and the complement of blue is yellow, so both of these channels show problems, when I open the file you have posted. Have a look in C1 to see what is happening on those individual channels. From what I can tell you still have a bit of headroom before you clip on the other side of the histogram, but I am looking at your posted images, not the original raw data, so you have more information to look at than I do.

    At ISO 100, you should have plenty of dynamic range. Have you tried exposure bracketing? Having a series of shots that are 1/3 or 2/3 of a stop apart should give you a fairly clean image with minimal clipping. It could be that the your hit close to the limits of the sensor, but when I see the amount shown in my screen shot, something is likely not quite right with your exposure.

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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by Manfred M View Post
    Carefully said, remember your colour theory - the complement of green is magenta and the complement of blue is yellow, so both of these channels show problems, when I open the file you have posted. Have a look in C1 to see what is happening on those individual channels. From what I can tell you still have a bit of headroom before you clip on the other side of the histogram, but I am looking at your posted images, not the original raw data, so you have more information to look at than I do.

    At ISO 100, you should have plenty of dynamic range. Have you tried exposure bracketing? Having a series of shots that are 1/3 or 2/3 of a stop apart should give you a fairly clean image with minimal clipping. It could be that the your hit close to the limits of the sensor, but when I see the amount shown in my screen shot, something is likely not quite right with your exposure.
    I believe I can guaranty that my exposure is always not quite right. I have not tried exposure bracketing with the a68. I shall go give it a try. Thanks for the heads up

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    Re: It's either Medusa or a Triffid, Your choice.

    Medusa.

    Good detail in the snakes ...

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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by Manfred M View Post
    Carefully said, remember your colour theory - the complement of green is magenta and the complement of blue is yellow, so both of these channels show problems, when I open the file you have posted. Have a look in C1 to see what is happening on those individual channels. From what I can tell you still have a bit of headroom before you clip on the other side of the histogram, but I am looking at your posted images, not the original raw data, so you have more information to look at than I do.

    At ISO 100, you should have plenty of dynamic range. Have you tried exposure bracketing? Having a series of shots that are 1/3 or 2/3 of a stop apart should give you a fairly clean image with minimal clipping. It could be that the your hit close to the limits of the sensor, but when I see the amount shown in my screen shot, something is likely not quite right with your exposure.
    Just got back in from the garden. The a68 comes with many exposure bracketing options. Too many to try all at once. But I like the ones I did try. I get an in camera balanced histogram. By balanced i mean all the colored lines more or less track the same line. It is on the left half but that's where I like to be anyway.

    My colors are certainly richer. Let me know what you think when i post the shot please and thank-you.

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    Re: It's either Medusa or a Triffid, Your choice.

    Quote Originally Posted by FootLoose View Post
    Medusa.

    Good detail in the snakes ...
    The a68 has a 15x focus magnification. With a little effort i can place it right where I want it.

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