sensors | Photocrati

Q and A: How can I get rid of spots on my photos?

Question

Recently all the photos taken with my digital SLR have obvious spots at two fixed places. Can I get rid of them by cleaning the sensor? Also, I see a lot of colored spots in my night photos but I guess that’s a different problem; how do I solve that? M.K.

Answer

Yes, it’s quite likely that the two dots are caused by specks on the sensor. You can send the camera to a service, or consider cleaning the sensor yourself with one of the products from VisibleDust such as the Zeeion Blower (from B&H Photo; from Amazon). For more stubborn spots (such as water droplets) you would need to use the special swabs (from B&H Photo; from Amazon) plus the SensorClean liquid (from B&H Photo; from Amazon).

But take maximum care not to scratch the sensor; follow the accessory manufacturer’s instructions to the letter! (more…)

Large vs. Small Sensors — Pro’s and Con’s

Before switching to digital capture, the majority of long-time photo enthusiasts used analog SLR cameras with a 24x36mm film frame. This format was the most common in conventional photography but it was virtually abandoned when affordable digital SLRs were being developed. While a few of the early pro cameras employed a 24x36mm sensor, they were prohibitively expensive. In order to keep their consumer-oriented DSLRs more affordable, all of the manufacturers decided to use smaller — and hence, much less expensive — sensors.

An increasing number of DSLRs are employing an oversized sensor, the same size as a frame of 35mm film. As we'll see, this aspect can provide some significant benefits but also some drawbacks.

(more…)