SUMMARY
The Nikon D600, an older DSLR model often recommended for budget-conscious beginners, has a documented issue where its shutter mechanism can leak lubricant onto the sensor. This oil can create unwanted spots on photographs, and it is difficult to clean as it tends to smear. While Nikon offered service advisories for free shutter system replacements, some users experienced persistent problems. It is advisable for potential buyers to investigate if a specific D600 unit has a history of this oil leak before purchasing.
TAKEAWAYS
Nikon D600 DSLRs can suffer from a shutter oil leak onto the sensor.
Oil spots on the sensor can cause unwanted marks in images.
The issue is difficult to clean and Nikon offered repairs.
Buyers should be aware of this potential defect before purchasing.