Search results for 'back focus' - page 766
Some questions.... (16-50 vs. 16-45 vs. 17-70)
This all lab tests though and I've no idea how the bokeh and such would be so it doesn't mean everything. You are right with your remarks about edges and corners. To be quite honest I don't care much about tests. If two lenses are tested by two different persons the conclusions will also be dif...
Posted by Hythloday on 13/04/2009 - 08:38
Some questions.... (16-50 vs. 16-45 vs. 17-70)
I also read them with a pinch of salt and you can of course make one lens look beter in a test then the other one. The DA18-250mm, for example, is far better than most tests suggest if you focus at 250mm and zoom out to the desired focal length to take the picture.
Posted by Hythloday on 13/04/2009 - 09:44
Sigma 10-20mm f4.0-5.6 EX DC / HSM Lens
You need to search the forum for the good, the bad and the ugly. Personally I am very happy with my Sigma and there are examples on my flickr pages - the most recent being the seaside shots. It's not always easy to get a good focus but if you do then it seems to be a very good lens although I sus...
Posted by mikew on 13/04/2009 - 20:05
Sigma 10-20mm f4.0-5.6 EX DC / HSM Lens
I own the 10-20 and think it's a great lens, although to be honest for landscapes at least sometimes it is just a bit too wide...my Sigma 17-70 still gets most use... on purchasing I would highly recommend buying it from a source where it can easily be exchanged, it took me 3 copies to find a go...
Posted by simonkit on 18/04/2009 - 20:53
Is it easy to check a new/used Lens?
Hi everyone. I'm going to receive my first DSLR + first lens! (I'm looking forward for that moment :lol:) As I read about lenses issues, is it easy for a newbie to check wether the lens is ok or not? What I found on the web is the following test, hoping I can do it properly, is it enough? ...
Posted by max11 on 13/04/2009 - 17:04
Kenko Teleplus DG 2X MC7 Teleconverter - Pentax AF
^^ what everyone else said is correct ^^. I would add that Golfdiesel is also correct that with the 2x convertor on the 55-300 autofocus hardly ever works. I find that the 1.5x Kenco however does work well with my 55-300, with some image degradation tho.... So a 1.5x is better than a 2x if you want ...
Posted by Hardgravity on 14/04/2009 - 08:55
Kenko Teleplus DG 2X MC7 Teleconverter - Pentax AF
So a 1.5x is better than a 2x if you want to keep auto focus? I'm interested in this topic as I've considered a TC in the past, tried manual ones, but not been convinced as to their worth. :? The AF does his metering through the lens, since a TC disperse the light and adds some extra glass to go ...
Posted by Anvh on 14/04/2009 - 10:51
The Bigma has arrived
Amin, they are roughly about 30ft away the shots are reduced in size for Flickr, uncropped, handheld and the first one is ISO 1600 without any noise reduction software being used. As for which is best out of the A* 300mm f2.8 with 2X-L teleconverter and Sigma 50-500mm with 1.4X I have to say the ...
Posted by aminstar on 14/04/2009 - 21:54
The Bigma has arrived
Oh, have to say they were both manual focus as well because the Bigma does not AF with the Sigma EX converters. Manual focus is not easy because the ruddy tripod collar is right in the way but on the plus side its so light you can move it with just your little finger.
Posted by Mike-P on 14/04/2009 - 22:04
The Bigma has arrived
Manual focus is not easy because the ruddy tripod collar is right in the way but on the plus side its so light you can move it with just your little finger. Mike, almost forgot, and just remembered because you commented on the lightness of the focus ring. I found the Zoom ring of the 150-500 pretty ...
Posted by aminstar on 14/04/2009 - 22:07
The Bigma has arrived
Mike, almost forgot, and just remembered because you commented on the lightness of the focus ring. I found the Zoom ring of the 150-500 pretty hard and non delicate, in fact pretty rigid. Is that common on these big boys? I think it is, both the Bigma and the 135-400mm I have on Ebay atm are alike i...
Posted by Mike-P on 14/04/2009 - 22:12
The Bigma has arrived
UPDATE: I wasn't really satisfied by the sharpness of my Bigma. I did a lot of testing but I couldn't get any satisfying results. I then called the shop about the options but repairing would take 6 to 8 weeks if there was a problem and if there wasn't a problem I had to pay a testing fee. I ...
Posted by golfdiesel on 16/05/2009 - 15:01
The Bigma has arrived
150-500mm dg terry, amin,:oops: oh yeah and back to a 170-500mm,:mrgreen:
Posted by scottthehat on 16/05/2009 - 16:35
Opteka 500-1000mm High Definition Mirror Telephoto Lens
it uses the same principle as a mirror telescope. if you look at the front of the lens there is a round disk in the middle of the glass... this is one of the mirrors. some people don't like mirror lenses because of the bokah ( you get doughnut rings of light) and some love them. i'm in the latter...
Posted by laurencea on 14/04/2009 - 23:52
Opteka 500-1000mm High Definition Mirror Telephoto Lens
and there all manual focus except sony ones for sony dslrs,
Posted by scottthehat on 14/04/2009 - 23:57
Old Lenses on a New Body
Big day today. I ordered a couple of Pentax mounting rings from SRS Microsystems down in England. They arrived today and I used my Takumar 2/55 and my 3.5/28 for the first time in twenty years. Initial reactions are mixed. First of all it's a crap day up here in Scotland - we're socked in with...
Posted by rwarren4 on 15/04/2009 - 12:45
Old Lenses on a New Body
One things for sure though; the old Taks are very capable lenses! :D I couldn't agree more, (check out my sig below) I have quite a collection and enjoy using them all, more so than my modern Pentax lenses at the moment. I always have one Tak permanently attached to my DS and My favourite would ...
Posted by Clarky on 15/04/2009 - 22:13
Old Lenses on a New Body
One things for sure though; the old Taks are very capable lenses! :D I couldn't agree more, (check out my sig below) I have quite a collection and enjoy using them all, more so than my modern Pentax lenses at the moment. I always have one Tak permanently attached to my DS and My favourite would ...
Posted by Rees on 16/04/2009 - 17:57
Old Lenses on a New Body
Well I spent a part of a free afternoon today in Edinburgh trying out my K200D with a 55mm f2 lens from the old days. The results were not stellar. I thought I'd figured it out. I needed to dial in some more light since the first pictures I shot in the back garden yesterday were really dark. I g...
Posted by rwarren4 on 16/04/2009 - 20:43
Old Lenses on a New Body
I've been a bit surprised at how difficult it is to focus. I guess it's one of those things you take for granted and then find out that it's easier to be 'off' than you thought and the shots come out looking rather dire. I'd have said that the majority of what I shot today was 'off'. There's a ...
Posted by rwarren4 on 16/04/2009 - 23:22
