I just picked up an 06 zoom, and used it for the first time during an orchestral concert. With the full F2.8 aperture at the long end, I was quite pleased with the results I obtained at ISO 1600 on my Q. I am considering getting a Q7 (or Q-S1) and realize the increased field of view will provide less reach with the 06 (205 mm v 254 mm equivalent). However, the information I have gathered suggests the larger sensor in the Q7 may still provide better resolution at the same lens focal length, even though a feature in the image (a head for example) covers less pixels?
The forums in depth review of the Q7 includes a comparison versus the Q at the same focal length and subject distance.
Pentax Q7 Review - Compared to the Q | PentaxForums.com Reviews
The extracts of the two pictures both have the same relative feature size and the same dimensions (444 x 272), so I assume they have been scaled? Does anyone have straight out of camera images from a similar comparison that would allow comparison at the pixel level? I have searched through the threads in the forum and have found comments about similar tests but no actual images. My apologies if I missed something.
At first glance, it would seem logical that the smaller pixel size in the original Q would provide more detail at the same focal length. However, the performance of the sensor and any noise reduction applied may cancel this out. The smaller sensor will also run into diffraction issues first. I like the increased reach of the 06 on the Q but I am certainly willing to crop down the image from a Q7 (or Q-S1) if the resolution is there. Thanks in advance for your help!