| Not that it matters as much as you may reckon, | | | | means dropping more on expensive lenses. The |
| but the D90 SLR has a minuscule (12.3MP) image | | | | better lens with high resolving capabilities that are |
| sensor than the marginally less expensive EOS | | | | engineered to work with extra megapixels, will not |
| Rebel T1i (15.1MP). If those specs were all you | | | | be the the cheap lenses. |
| knew, then it would seem reasonably obvious that | | | | Canon has decided to box the EF-S 18-55mm f |
| the Rebel T1i, is the unsurpassed SLR for the | | | | 3.5-5.6 IS with the EOS Rebel T1i, and it wouldn't |
| money today. | | | | be my preferred lens for a digital camera that |
| By just paying attention to the technical | | | | promises 15.1 megapixels. In this writers humble |
| specification numbers, you don't understand the | | | | opinion, a better lens for the Rebel SLR T1i should |
| big picture (pun intended) here. Bigger is | | | | have been the somewhat more expensive |
| sometimes not better. | | | | 18-200mm Canon EF-S. |
| I'm confident you've read in some of my previous | | | | But, that's not all, as we're far from finished |
| writing, that lots of megapixels doesn't instantly | | | | explaining the difficulties with with excessive pixel |
| create great images. The image sensor must be | | | | density. Pixel density can adversely affect |
| able to cope with more megapixels. | | | | dynamic range, ISO, and diffraction. I don't know |
| The APS-C sensor employed in the T1i SLR, is | | | | about you, but I'm thinking, that getting a bunch |
| actually a bit smaller than the DX type sensor | | | | fewer megapixels from the Nikon D90 12.3MP for |
| used by the Nikon D90. Obviously there are a | | | | more a few more bucks, may be a better choice |
| few ways to squeeze extra pixels into a smaller | | | | for my dollar. |
| box. Using tinier pixels, and squeezing them closer | | | | An camera industry accepted test used to |
| together works. This contributes to a lesser | | | | evaluate RAW sensor data is the Dx O Mark test. |
| known specification labeled as pixel density. In the | | | | DxOMark testing is not currently available, but the |
| case of the T1i SLR, it is about 50% worse than | | | | EOS Rebel T1i uses the Canon EOS 50D sensor. |
| the D90. That is 4.5 for the Rebel SLR T1i, and | | | | The testing has shown, that the D90 SLR image |
| 3.3 for the Nikon D90 DX. | | | | sensor is superior to the EOS 50D sensor. There's |
| Having extra pixels on a image sensor can cause | | | | every reason to believe that forthcoming Rebel |
| several problems. As you go in search of extra | | | | T1i test results will be very similar to the Canon |
| lenses, you'll quickly learn, that more megapixels | | | | 50D data. |