Introduction to the comparison of Nikon F-mount, Z mount, Tamron G2, and Sigma Art 24-70mm lenses.

• Announced a showdown comparing Nikon F-mount, Z mount, Tamron G2, and Sigma Art lenses.
• Mentioned an image quality comparison had been done previously.
• Highlighted the intention to update the comparison due to lens updates.

A brief interlude to mention the video's sponsor, Nord VPN.

• Mentioned using Nord VPN for over 18 months, highlighting its benefits.
• Offered a discount code for Nord VPN with a bonus month.

Outline of the hands-on test approach for comparing the lenses.

• Explained the video will be hands-on with practical shoots to test various lens capabilities.
• Advised viewers to check the description for full specifications and pricing links.

Detailed specifications of each lens being compared in the showdown.

• Discussed the Nikon 24-70 F-mount non-VR version's age, price, weight, and lens construction.
• Evaluated the Tamron G2's build quality, price, weight, and lens elements.
• Reviewed the Sigma Art's build, weight, price, and lens complexity.
• Outlined the Nikon Z mount's features, weight, lens elements, price, and lack of in-lens stabilization.

Setting up a studio shoot with different backdrops and lighting for the lens comparison.

• Chose a gold-themed backdrop for the shoot.
• Set up the lighting and had the model maintain a consistent pose for repeatable results.

Conducting an outdoor shoot using the same lighting setup for lens comparison.

• Moved outdoors to shoot in front of Manhattan, adjusting the scene and light settings.
• Took shots with each lens at the same settings to maintain consistency.

Noticed a difference in focal length portrayal between the lenses at 70mm.

• Observed that the new Nikon lenses appear longer at 70mm compared to Tamron and Sigma.
• Suggested that the Nikon lenses may be longer than 70mm, or the others could be shorter.

Performing movement and low-light tests to evaluate the tracking and focusing capabilities.

• Conducted a movement test by having the model run back and forth while tracking with each lens.
• Turned off studio lights for a low-light focus test at ISO 12800.

Final evaluation and recommendations based on the comparison tests.

• Concluded that Nikon's F-mount lens is outdated and Tamron G2 offers great value for its price.
• Sigma Art lens is heavier and not recommended over the others unless brand loyalty is a factor.
• Z mount lens has the best performance but at a higher cost, making it a choice for those with a higher budget.
• For budget-conscious buyers, Tamron is the recommended option.