All Forum Comments
Comment by andymat posted on Pentax Kr-16-45 f4 at 30/08/2014 - 11:32
See https://www.google.co.uk/maps/@57.681597,-6.339948,3a,75y,284.58h,82.31t/data=!3m4!1e1!3m2!1sxoAJlMRBy_28qNU6M3YKjw!2e0?hl=en
link
We were there a couple of months ago. I think the castle has deteriorated a bit since the photo was taken!
Comment by andymat posted on Weekly #365 - Don't let a bit of rain put you off at 14/07/2014 - 09:57
Comment by andymat posted on WTB - SMC Pentax 30mm f2.8 at 10/07/2014 - 13:32
What a generous offer though. I'm sure they won't last long!
Cheers,
Comment by andymat posted on Filters in Various Sizes at 28/06/2014 - 09:59
I have spent 2 weeks in Scotland assembling and de-assembling my Cokin/Kood filter paraphernalia on my 16-45 lens and I was thinking I should look for a 67mm polariser to save rather a lot of bother.
Any possibility? I would be very grateful.
Comment by andymat posted on Filters in Various Sizes at 27/06/2014 - 22:50
Comment by andymat posted on Zoom and Macro? at 15/06/2014 - 22:01
However I did some research and found a Sigma 18-250 Lens which supposedly has a macro mode but the more I delve into the detail the more I think that it is not really a proper macro close up ability, just marketing hype to sell more lenses.
So I am now wondering if a MX-1 would be more suitable as it is more compact, has a macro feature and a zoom from 28-112mm equivalent.
Has anyone any thoughts on these two options for macro photography with a general walk around zoom facility or can you suggest another lens suitable for use the the K-r or something else completely?
Many thanks,
Comment by andymat posted on Zoom and Macro? at 15/06/2014 - 19:43
Thanks Ken
Comment by andymat posted on Sensor marks at 09/06/2014 - 10:07


This was taken with my K-r and the 16-45 lens. f/8, 1/50th sec, ISO 200, 31mm focal length. Do you think this is any better than your camera/lens?
As Bill says perhaps your depth of field is a bit out? If your focus position is too close then you will not get full depth of field to infinity. Having said that, according to an app on my phone (lens Lab - suggested by someone on here and very useful), you would need to focus at or beyond a distance of 62cm at 16mm and f/22. At f/8 you would need to focus on a point 1.7m away or more for the infinity to be in focus.
Both your pictures seem to have good sharpness in the foreground. The rocks and pebbles seem fine. Are you worried about the far distance? They don't look too bad to me considering you have probably reduced the size of the photos for the web and you are pointing into the sun.