Hi all
I just made a big switch from Nikon to Pentax after losing faith in customer service and technical support from the former. I won't bore you with the detail... what matters is, after extremely careful thought and research, I upgraded from my Nikon D40X and low-end Sigma lenses to a K-7 with 18-55mm and 50-200mm WR kit lenses. Time will tell whether my choice was a wise one, but for now, I'm very happy
Alas, the first K-7 had to go back to the supplier, as it was consistently back-focusing by a good inch or so on both lenses
. The supplier, Cameraworld in London, was fantastic about this... I had the first camera and both lenses for over a week and carried out more than 200 test shots before returning the whole kit. They instantly swapped both the camera and lenses for completely new kit along with a reassuring "come straight back to us if you have any further problems". How refreshing!
Anyway...
The replacement K-7 is working just fine, and I absolutely love the camera. The build quality and overall design is just superb, and from the short time I've played with the camera, I feel like a Pentax convert already!
JPEGs at higher ISO sensitivities do look a fair bit noisier than with my D40X, but that's OK - I understand why, and expected it when I chose the camera. Actually, I kind of like the balance between detail and "grain" on the K-7 - I'm a film guy at heart, and I don't mind some graininess at higher sensitivities.
What I'm less impressed with is the performance of the lenses - in particular, the 18-55mm. Wide-open - and, particularly, in high-contrast / flash situations - there is a considerable amount of "blooming" around brighter areas (for example, the letters on a keyboard have a "glow" around them). If I stop the lens down a little, the problem reduces or goes away completely, but in my book this means I have a slower lens than advertised!
In contrast, the cheap-and-cheerful equivalent I use on my D40X - the Sigma 18-50mm F3.5-5.6 DC HSM - seems way better at similar focal length and aperture settings. In fact, I can't get that cheapo Sigma lens to show more than the faintest blooming in any circumstances whatsoever.
And so to the point of my first message here (other than to say "Hi" and humbly ask for acceptance into this esteemed group!)...
I'm delighted with the K-7, and - for now - happy to compromise for the flexibility these two kit lenses offer me. I don't think my specific 18-55mm lens is at fault, as the first one (coupled to the slightly faulty / mal-adjusted camera body) also showed the very same blooming problem. So, am I right in thinking that the lenses I've bought - particularly the 18-55mm - have serious limitations compared to the low-end Sigmas I'm used to?? If so, I'm kind of surprised that Pentax would package such a wonderful body with comparably poor glass.
I don't mean to offend anyone here - I'll say it again, I already feel like a Pentax convert, and I am very happy with the kit I bought overall. I know when I've figured out the limitations of the lenses, the remaining limitation will be me and NOT the K-7! But I'd love to know what others think about these "kit" lenses.
Cheers
Mike