Search results for 'back focus' - page 810
Pentax SMC A 50 mm Lens usage
Actually, there is another method. If your dioptre is set correctly and the image in the viewfinder is bright enough and your trust your eyesight, use your own eyes to determine if the part of the image that you want to be in focus is, or not. A magnifying eyecup is available to make this task...
Posted by Mannesty on 16/09/2009 - 21:37
DA*16-50 versus MacroLtd35 at f 2.8
Hmmmm Do not turn attention to the focus of the crop - I wasnt focusing to that place, so at f 2.8 it is not expected to be in focus. Its just the color abbervation !!! 1. DA16-50 at f 2.8 crop of it 2. Macro35Ltd at f2.8 and crop of it
Posted by Aiki on 16/09/2009 - 21:53
Bagged a couple of bargains!
I don't wish to steal your thunder Tim, But I believe I bagged the bargain of the year earlier today. Found this lot on a local classifieds website. Pentax ME super, + winder Pentax K 15mm 3.5 Pentax K 18mm 3.5 Pentax K 30mm 2.8 Pentax M 50mm 1.7 Pentax Extension tubes Sigma 500mm mirr...
Posted by Clarky on 17/09/2009 - 14:07
Bagged a couple of bargains!
I don't wish to steal your thunder Tim, But I believe I bagged the bargain of the year earlier today. Found this lot on a local classifieds website. Pentax ME super, + winder Pentax K 15mm 3.5 Pentax K 18mm 3.5 Pentax K 30mm 2.8 Pentax M 50mm 1.7 Pentax Extension tubes Sigma 500mm mirr...
Posted by RR on 17/09/2009 - 14:09
Bagged a couple of bargains!
Clarky, the Viv 75-205 is possibly 3.8 constant and may focus pretty close aswell.It really needs a hood if it is like mine(2step version),hope it has one. Regards mm
Posted by missmarple on 17/09/2009 - 20:43
Bagged a couple of bargains!
I don't wish to steal your thunder Tim, But I believe I bagged the bargain of the year earlier today. Found this lot on a local classifieds website. Pentax ME super, + winder Pentax K 15mm 3.5 Pentax K 18mm 3.5 Pentax K 30mm 2.8 Pentax M 50mm 1.7 Pentax Extension tubes Sigma 500mm mirr...
Posted by philstaff on 17/09/2009 - 22:34
Bagged a couple of bargains!
I sold a bunch of lenses with my first ME back in 1982 in Basra, Iraq. Sold the lot on at full retail even though they were a few years old. All mint. Could not buy much there then due to the war with Iran. Nothing special, a few Pentax and the rest Sigma. Popped over the border into Kuwait the f...
Posted by K10D on 18/09/2009 - 18:52
Bagged a couple of bargains!
I sold a bunch of lenses with my first ME back in 1982 in Basra, Iraq. Sold the lot on at full retail even though they were a few years old. All mint. Could not buy much there then due to the war with Iran. Nothing special, a few Pentax and the rest Sigma. Popped over the border into Kuwait the f...
Posted by mph555l on 18/09/2009 - 22:59
Pentax Auto Focus SMC F 1.7X AF
This may seem like a stupid question;:oops: If atatched to a AF lens does the above let the lens focus or does the convertor focus for the lens:?: Davex.
Posted by davex on 17/09/2009 - 17:25
Pentax Auto Focus SMC F 1.7X AF
The latter. G
Posted by George Lazarette on 17/09/2009 - 17:30
Pentax Auto Focus SMC F 1.7X AF
Thanks G.
Posted by davex on 17/09/2009 - 17:33
Sigma 17-70 Ordered
I too have been looking at the Sigma 17-70 and looking to sell my Pentax 18-250mm. You already have an excellent lens in your Pentax 18-250mm and I wonder why you want a less versatile one to replace it? I'm guessing it might be a fsater aperture you are looking for, or maybe a more compact lens?...
Posted by petemasty on 19/09/2009 - 12:17
Sigma 17-70 Ordered
I too have been looking at the Sigma 17-70 and looking to sell my Pentax 18-250mm. You already have an excellent lens in your Pentax 18-250mm and I wonder why you want a less versatile one to replace it? I'm guessing it might be a fsater aperture you are looking for, or maybe a more compact lens?...
Posted by organicimagery on 19/09/2009 - 13:05
Tamron v Sigma
HI Folks I am considering a 70-300 lens and have short listed the Sigma and the Tamron. I need a macro facility to act as a back up to my Sigma 105 which I use for close up and macro work. I am currently using a K20 and have no plans to replace it as I am perfectly happy with it. Has anyone out th...
Posted by hamiltonsmith on 18/09/2009 - 17:49
Tamron v Sigma
I think the general consensus is: Tamron - sharp but sufferers purple fringing (especially at long end) Sigma APO: Soft at larger apertures (especially at the long end) Sigma non APO: as APO but softer still & less contrast. I'm sure someone will be along to confirm or disprove these comments sho...
Posted by RR on 18/09/2009 - 18:17
Tamron v Sigma
I have the Sigma 70-300 on a K10d, I find it very soft at the longer end. The Macro function places me to far from the subject and not all the subject is in focus, see the link below.
Posted by Technoblurb on 05/10/2009 - 12:40
Samyang 14mm
I know there's been some discussion about the manual focus 85mm f/1.4's made by this company on here before (also branded as Falcon, Vivitar & rokinon amongst others) Just thought I'd mention that there is a 14mm f2.8 due in November. It probably wont interest the digi-only guys but may interest ...
Posted by RR on 19/09/2009 - 00:39
Samyang 14mm
I'm hoping it would drop a little from there too. The 85mm can be had for under £200 on evilbay. Certainly one to keep an eye on I think. I've been considering the 85mm which looks sharp wide open. but trying to manually nail the focus with such limited dof could prove tricky. Of course the extra...
Posted by RR on 19/09/2009 - 19:20
Samyang 14mm
I'd recommend the 85mm - especially if you think you'd spend most of your time close to wide open where it performs at its best. The bokeh is amazingly smooth and as you say the lens is sharp too (at least the bits that you nail the focus to!). I got mine (Opteka) from 47th Street Photo, which is ...
Posted by JonSchick on 19/09/2009 - 20:27
zoom/telephoto beyond 300mm and wide angle?
Hi, Have you taken a look at some of the second hand dealers that advertise in Amateur Photographer Mag? Mifsuds.com Ffords.com nicholascamera.com mxvphotographic.com collectablecameras.com I have not checked these sites recently but i remember Mifsuds had a Pentax FA 400mm f5.6 at ...
Posted by PeteL on 19/09/2009 - 09:35
