送交者: Passer-By-From-Texas 于 March 15, 2010 19:29:31:
回答: 无敌兔还是上在脚架上 由 悠云 于 March 15, 2010 10:04:31:
I. From the photographic point of view, the 2nd one is viewable with fun of colors and pleasing compositions, of which they are lacking in the 1st one. However, even the 2nd one, the colors, even though richly colorful, could (or should) be rendered better. I think this may not be your (camera operator's) fault. See my discussion below.
IMHO, of this colorful 2nd shot, cropping off the red spot on the edge of the right hand side will make the picture cleaner. However, if it could be shot again, it would be better to make it into two shots: one with emphasis on the green light bubble (?), and another without it in the picture.
2. Technical aspects of the camera and its settings
(1) Lenses. Of Canon's 70-200 mm, at 70 mm, it seems to be at its weakest point in terms of the optical performance, e.g. sharpness and resolution. And of such a scene type, the 70 mm is not as good as you chose the Panasonic's 12.8 mm (or 60 mm of 35 mm equivalent), which is not only wider but also greater depth of field, i.e. rendering greater sharpness in a larger range for such a view. The Canon image (the 1st one) has a circle of confusion (CoC) 0.01 mm and the Panasonic one has 0.006 mm, which translates a better sharpness in the 2nd image. However, it looks like similar in both images?
(2) Two major elements affect the display of the two pictures here: (i) color space (sRGB) you chose for the image (no matter set in the camera or later transformed from raw image in PS), it limits dramatically the rendering of the colors while your pictures in this scene need color to sell the story; meanwhile, the color space in viewer's monitor may cost you a little bit of displaying the pictures; (ii) your setting of large aperture and choice of the focusing spot (distance) seem to be also not at the optimal for generating better sharp pictures. Of digital cameras, set f11 should be a choice, and some successful digital photographers even choose to use f22 or smaller to generate astonishing pictures.
(3) As far as the pictures represent, the dynamic range of colors and lights are greater than your camera(s) can properly display in a single shot. The sRGB space has problems in rendering the richness in green and blue, and also the greater illuminance in green "washed" out their depth of the colors while the red seems to be very nice and pleasing. I would more like to try a few more bracketting (e.g. 3 shots) and do some HDR synthesis. If HDR is applied, I would avoid those automatic HDR software such as Photomatix but manually do it in PS using layers and mask. You can definitely push these shots to one or two levels of quality up.