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The optimal type of objective lens for capturing chromosome images is planapochromatic. This lens offers several key advantages vital for cytogenetic analysis.

Planapochromatic lenses are designed to provide excellent color correction across a broad spectrum, which is essential when observing the distinct staining patterns of chromosomes. This feature is particularly important in cytogenetics, where precise visualization of chromosomal features is necessary for accurate analysis.

Additionally, planapochromatic lenses offer a flat field of view, meaning that images across the entire field remain in focus without distortion. This characteristic is crucial when examining the fine details of chromosomes or when large chromosome spreads must be assessed. The aberration correction capabilities of planapochromatic lenses ensure minimal optical distortion, which significantly enhances image quality, allowing for the fine assessment of chromosomal structure and any potential abnormalities.

Using the right lens directly influences the clarity and accuracy of the chromosome images, enabling better diagnosis and research outcomes in cytogenetics.