All Forum Comments
Comment by PeterKR posted on Some Black and White trees at 19/02/2020 - 23:32
For completeness here is another 100% crop of one of the magnolia buds. Taken at 1/500s and f/8. Again the camera jpg with no PP except for the crop.

Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 17/02/2020 - 19:29
Seems like a reasonable lens, especially for the price. Wonder how it stacks up towards sunlight versus the HD coating on the D-FA 28-105mm WR and how much louder the focus is (not an issue for most but may be an issue for some).
I had a close look at the images last night and here are two '100% crops', i.e. Actual Pixels, from the jpg image 23 & 24 above.


I think these say it all !
(PS. the dng images look even better !)
Peter
Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 13/02/2020 - 10:16
I don't think the vignetting is uncommon for wide angles. If it helps for a comparison this is the Pentax 28-105 @28mm and F3.5 on a K1-mk1. (Jpeg out of the camera)

Thanks again
Peter
Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 12/02/2020 - 19:45
I'm unclear as to why the testing is not done on your FF body.
I taken a similar range of shots and again all taken hand held with the camera on TAv at 1/250s and f/8, to provide a comparison with those taken with the K50.
As davidwozhere has pointed out in his comment on the gallery pic I posted, the exposure settings are not neccessarily ideal but they serve as a standard setting for the comparisons.
As above all images are the camera jpg with np PP except for size reduction for posting.
Firstly are some taken around 9:15 this morning with slightly dull sunlight and after that are some taken around noon in brighter sun. The main differenc then is the ISO value chosen by the TAv setup.
I'll start the numbering at 12 to continue the sequence from above.
12

13

14

15

16

17

18

And now the later set:-
19

20

21

22

23

24

25

What I do notice is that even at f/8 there is limited DoF in many of the shots and in the wide end shots there is a bit of vignetting ?
All C&C welcome
Peter
Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 12/02/2020 - 14:43
I'm unclear as to why the testing is not done on your FF body.
For now though, since I've not got used to the (more complicated) K1ii yet I thought I'd do the first tests on my familiar K50.
I can then compare the results and it will also be a good test of whether the big cost outlay was worth it !!!
Peter
Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 11/02/2020 - 23:18
My copy is in immaculate condition with 'sparkling' glass so here are some initial test shots using my K50.
All were taken hand held with the camera on TAv at 1/250s and either f/8 or f/11. I tried to cover the full zoom range from 28 to 105. All used auto focus.
The images below are all out of camera jpg with no PP except for size reduction for posting
1

2

3

4

5

6

7

8

9

10

11

All C & C welcome
Peter
Comment by PeterKR posted on An alternative 28-105 for the K1 ? at 11/02/2020 - 17:41
Yes, f/5.6 is wide open at the long end so it was a tough test.
When the sun returns I'll try some more shots at f/8 and f/11
Peter
Comment by PeterKR posted on Testing an smc F 70-210mm at 09/02/2020 - 09:25
Another vote for the 18-135 here.
This is the lens that spends most of the time on my K50 or K70.
But I usually switch between the DA 55-300 PLM and my Sigma 18-250 on the other camera for when I want that little extra 'reach'.
Peter
Comment by PeterKR posted on One lens does all at 06/02/2020 - 22:43


I took several tree shots yesterday and I found they blurred into the background in the colour images 'as shot' - so you've got me thinking !
Nice PP
Best regards
Peter