K3, how good?


sportyman531

Link Posted 26/02/2018 - 21:27
danofmk wrote:
Somebody did a test on another forum recently and even with a lot of pixel peeping the K3 was almost indistinguishable from the K1

And I am talking HUGE crops

Do you remember which forum?
flickr ID: SteveW46243 or sw46246
DA AL 35mm f2.4, K3,18-135 WR, DA 55-300, Pentax KX, K5 x 2, 18-50 50-200 kit lenses, Tamron 17-50 f2.8, Fuji X10, 2x Mamiya 1000s 2x 80mm f2.8, 150mm f3.5, 210mm f4, Yashica 124G TLR, 2x Yashica FX3 Super 2000, Tamron 28mm f2.8, 90mm SP f2.5, 135mm f2.5, Olympus 35RC, 2x Yashica FX2, Kodak Pocket Instamatic, Kodak Box Brownie

JAK

Link Posted 26/02/2018 - 21:31
Pixel peeping I can understand that. The result of that is that the overall image will be higher quality on the K1 as the magnification of each pixel in the finished image will be less.
John K

smudge

Link Posted 26/02/2018 - 21:36
danofmk wrote:
Somebody did a test on another forum recently and even with a lot of pixel peeping the K3 was almost indistinguishable from the K1

And I am talking HUGE crops

Hmmm...I have both a K3 and a K1 and whilst that finding may be true under test conditions there is a noticeable difference in normal use. If you manage a shot which is perfectly exposed and requires very little P/P then there is very little difference but once you start to, say, boost shadows or play with contrast in P/P then the K1 files hold up better. But, yes the K3 is perfectly capable of producing large prints.
Regards, Philip
Last Edited by smudge on 26/02/2018 - 21:42

danofmk

Link Posted 27/02/2018 - 07:08
Here you go

http://www.thepentaxforum.co.uk/viewtopic.php?f=19&t=3937

If I hadn't fallen for film recently I'd definitely be picking up the second hand K3 for sale for 450 quid on the forum at the moment!

richandfleur

Link Posted 27/02/2018 - 09:05
Printing size comes from image pixel resolution.

johnriley

Link Posted 27/02/2018 - 09:22
I've had a look at the images on that thread. It's not a perfect comparison as the poster admits they messed it up to a small degree, but clearly the 645Z offers enhanced resolution that is clear to see. Look at the wires in the distant crane to see the difference.
Best regards, John

danofmk

Link Posted 27/02/2018 - 11:28
I agree

What I took from it was if it's all about the IQ, medium format is the way to go

What's the weight difference between the K1 and the medium format out of interest?

johnha

Link Posted 27/02/2018 - 12:27
danofmk wrote:

What's the weight difference between the K1 and the medium format out of interest?

The weight difference is rarely significant, it's more the reduction of lens choice and practicality of longer lenses. There are few zooms, those that are available are very expensive (there are no independent options). An xx-300 zoom for FF is relatively small and reasonably affordable, for a 645Z the equivalent is something to 450mm or so - these are either un-obtainably expensive, and/or impractical to carry/use. If you're dedicated enough you can manage them - the P645 has/had one of the largest MF lens ranges available, all the way to a 5kg 600mm f/5.6.

I use MF film cameras, irrespective of format, the bags are similarly sized and similar weights, the difference is the number of lenses/accessories you can fit/carry. The Pentax 6x7 is thought of as a huge/heavy camera - in reality it's about the same size/weight as an FF DSLR with grip and f/2.8 standard zoom - the difference is you only get one focal length. Minimise your lens choice to one or two lenses and there's not much difference.

With 35mm I find I'm carrying everything all at once (just because it happened to be in the bag at the time), even if I don't have any use for it, it gets carried. With MF, if you take out the lenses, filters, hood etc you don't need, it needn't be bigger/heavier than a 'fully loaded' DSLR bag - but you lose some flexibility with lens choice if you need more than two or three focal lengths.
PPG Flickr
Last Edited by johnha on 27/02/2018 - 12:51

Chrism8

Link Posted 27/02/2018 - 17:34
I agree with Johnha as above, I mainly shoot portraits and landscapes with MF so on a
portrait shoot I generally don't take the 25-45 as its a beast, and on a landscape I don't take the 150 F2.8.
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

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K1 - Pentax 100 Macro F2.8 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6

Pentax FA 24 - 70 F2.8, Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.
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