Canon EOS R6 Advanced User Guide - Page 309

Canon Log Image Quality With Canon Log, movies may be affected by horizontal banding, depending on the subject or shooting conditions. Record a few test movies and check the results in advance. In particular, noise may become more noticeable if you enhance the contrast when color-grading your movies. With Canon Log, skies, white walls, and similar subjects may be affected by noise or uneven gradation, exposure, or colors. Horizontal banding is more likely to occur when recording somewhat dark, flat subjects. This image noise may even occur at relatively low ISO speeds around ISO 400. If noise is noticeable, try recording under brighter conditions and adjusting brightness in color grading. Noise can also be reduced by recording at ISO speeds lower than ISO 400, although dynamic range is narrower. Caution General Canon Log shooting precautions With Canon Log, autofocusing may be more difficult for subjects under low light, or for low-contrast subjects. Noise may appear at image edges if [Peripheral illum corr] in [ : Lens aberration correction] is set to [Enable] when Canon Log is set. Canon Log 2 and Canon Log 3 are not supported. Histograms of images captured with [Canon Log] set to [On] are not based on images as converted for View Assist display. Image areas shown in gray in the histogram roughly indicate signal values that are not used. Note Playing movies recorded with Canon Log View Assist is not used during movie playback. 309