Hi Mark, thanks for the email with the link to Sony Universe and to your Bird Photographers section. I have a Sony A1 and Sony A9 for bird and wildlife photography mainly with the Sony 200-600mm and occasionally a 1.4x teleconverter. If I can get close enough I'll swap to the Sony 135mm F1.8. I generally use Mark Galer's PAL settings with tweaks to custom keys, FN settings, focus areas plus adjustments to the shutter speed and aperture where necessary. For post Processing I mainly use Lightroom Classic with Topaz Denoise and Sharpen and I always see if your 'Brighten Subject & Darken Background' & 'Razor Sharp' presets enhance an image. Can I give you a plug and suggest that in my opinion you are one of the best educators and presenters with a real talent for supplying useful hints, tips and comprehensive tuition at a reasonable price. Cheers ColinW