View Full Version : Techheads in here..

30-01-10, 01:11 AM
Pentax Shootouts and comparisons

I have decided to construct an article based on comparitive figures and specs from the k7 in regards to the Camera's in its class or near.
Whilst i own a Pentax k7 and cannot use it until the later of next week due to battery failure, i have been digging in the darkest depths of the net for information and statistics for this model to satisfy my concerns.
After much analysing, i have come across some beasty competitors in the prosumer market from major manufactuers.

In the This line up are the:

Canon Eos 40D
Canon Eos 450D
Nikon D300
Nikon D300s
Nikon D90

The Reason for this investigation is to put my mind at ease as to which camera is "actually" a better performer then the K7 or is the K7 mearly a gadget ploy ( a re-badged k20d).
I've noticed so many review sites giving each camera, full creditation for its performance, features, and Design, and each camera rarely gets bashed for poor anything, apart from minor details, and varience in features.
This seems too good to be true....if i'm honest, and after my research, i am thinking these camera's, in this particular market segment, are very "the same"

The same thing happens with graphics cards, and other tech hardware, where a chip used on so many different cards, gets re-issued to the public under a different product name/series. Yet they show minimal, to no signs of performance gain, other then features or additions.
No biggy right?...yes it is, when price is concerned. In the camera market, in particular the Pentax range, i find this to be the case.
In 2008 i purchased a k100 super from pentax's range, and tested it for over a month.
I had taken many shots with the camera in this time, with the idea of trading it in, if i felt it was not providing me with the performance that i needed. Sure enough one month later im trading it...so what?..you say.


I then purchased the k10d at nearly 230 pounds more after reading blogs and blogs of reviews, and at the time impressed me with its spec. I then proceeded to buy and use the k10 for about the same time, and found that they are the same in terms of performance just a bigger resolution. No difference in tonal ranges, grain, speed, and i studied these photo's for hours and hours, i took sample shots of the same scenes, at the same lighting conditions or near,they really are the same..im sorry to say. Yes the k10 is better equipped then the k100 super, but with no noticable image difference, whats the big fuss?. As for the k7, i'm sure once i start using it, i will take the same shots again, and i will find the same i'm sure, except the image will blow bigger at final print.

Ahh but what about the video?, you say, what about the metering, well ...

The video, is shall we say, is neither good or bad, its not good enough to do anything with, in terms of production, with its 720p, and leaves me to wonder why pentax settled for the average in this department, i mean it does'nt even auto focus, so you take a video and have to move the camera whilst trying to focus...lame...and novice feeling too. Again a percentage of RRP is due to this feature, a price i had to pay for their flagship model.

Heres how the k10d and the K7 fair against each other, using specs from the dx0mark sensor test.


The K10D


The K7


Notice how the K7 scores less in 3 of the 4 tests against the *K10d* leaving only a small margin of increase in terms of iso performance..

The Canon Eos Entry level 450D


The Canon Eos 40D


30-01-10, 02:00 AM
The 450D from Canon beats the K7 in 1 test also, with iso performance being on top of pentax, Lets not forget that this is an entry level camera, and its not far off pentax's flagship.
The 40D hammers home, scoring higher in 3 tests, with noticable increases over the pentax rival, yet so many sites compare the two as a stand off...just look at the iso performance..go Canon!!

The Nikon D90


This camera destroys the K7 in all tests, with the closest test being the colour range where they draw, again this camera is in the price range of the K7 and out performs it somewhat easily.

The nikon D300s


Here Nikon enjoy an easy win over the rival pentax with really good scores for a prosumer camera it lost on one test being the colour range.

Now the disturbing test..

The same test with the K7 and the K20D


The scores are very very similar, and beating the K7 in most areas, strange as surely the K7 is meant to be an improvement over the k20d, in terms of how it deliveres the goods when the cards are on the table.

Even more alarming is the k10d matching it bar 1 test and this shows my point exactly...three generations the same, with added features, re-branding surely? they said they wrote the cmos from the ground up...really!! it looks very similar to me.

i will update this thread next week with new images from my k7, and i will test it until the cows come home, i might even take the two camera's apart and compare.

any views?

31-01-10, 01:28 AM
I recieved my battery today, and for an after market battery, cell its very good in terms of performance.

This anabled me to take some shots in terrible light, and play with the video function some more...


Interestingly....the video under tungsten light is not far of my 800.00 panasonic hdc -hs100, but with tungsten WB setting anabled the video still suffered very heavy in low light...not that i'm surprised, as it matches my panasonic in terms of clarity, if not better.

I dont really see much difference in the the two top video resolutions, but still happy with result.

I'd be very happy if the they do a firmware update to add autofucus into the equation.


The stills give me mixed emotions, and to be honest, and fair, it is slightly...and i mean slightly better then the k10d, focusing speed is not far infront from the k10d unless you can mentally guage in milliseconds.

processing time is better on jpeg but felt its the same on raw with the 30mbs sdhc in it.

Iso is terrible and images on a tripod are better, but not what i imagined, based from the two previous purchases, in low light it was a little grainy at 800, in my front room, and although the images stayed fairly sharp the grain was noticable on the blue colours around the room and seemed very flat, with flash also.

screen pulses under tungsten and can be fairly off putting.

Overall it doesnt make me disapointed but not amazed either...its a gimicky...not quite finished camera that could of been great, hopefully the updates will fix some slight issues with the above..

heres a shot taken today and processed..


will keep you updated