How many primary, distinct, high-fidelity color panoramic transmissions are often cited as defining our visual understanding of the Venusian ground?
Answer
Four
If strictly counting the distinct, high-fidelity, color panoramic transmissions from the 1982 missions (Venera 13), the total is often cited as being limited to just four primary images.

#Videos
The First and Only Photos From Venus - What Did We See? (4K)
Related Questions
Which mission set captured the only known color images from the Venusian surface?What surface environmental factors cause cameras sent to Venus to have a vanishingly brief operational window?What characterized the appearance of the initial black-and-white panoramic images transmitted in 1975?Which mission is credited with providing the most comprehensive visualization of Venus’s surface through radar imaging?How many primary, distinct, high-fidelity color panoramic transmissions are often cited as defining our visual understanding of the Venusian ground?What specific radar technology did the Magellan mission utilize to penetrate the clouds and map topography?What technique allows spacecraft to create images of the Venusian surface despite the thick atmospheric veil preventing direct optical telescopes from seeing the ground from orbit?What feature allowed the Parker Solar Probe (PSP) to capture visible light images showing surface features during its rapid passes?What primary gas forms the thick atmosphere that acts as an insulating blanket on Venus?What did the first successful landers in 1975 confirm about the surface appearance?When expanding the definition of 'images of Venus' beyond surface photography, what skyrockets the count into the millions?