Search results for 'back focus' - page 755
Did anyone like the 60-250mm???
I took some shots on my own SD card, but they were all slightly out of focus, so I don't think it would be fair to judge quality based on those. Contrast and colour look good though. As I was saying in the , it's far too big for my usage. I don't think I'd be able to use it without a monopod. ...
Posted by Reuben0 on 01/03/2009 - 12:33
Did anyone like the 60-250mm???
I only used that lens on their camera (one of the few I didn't attach to my K10D). Despite Amin's nice comments :oops: (and nice to meet you too) I have never been much of a long-lens user. The lens seemed as quick to focus as other SDM lenses I have handled, and a nice bright image in the viewfin...
Posted by womble on 02/03/2009 - 16:19
Did anyone like the 60-250mm???
My advice, with any product from any manufacturer, is never buy the first models on the market. A few months down the line they have ironed out the glitches found by their unsuspecting beta-testers and the price has stabilized at what the market will bear. This isn't a pop at Pentax but the modern...
Posted by womble on 02/03/2009 - 19:57
macro and portrait all in one
The F dates back further than any need to differentiate between full frame and APS-C formats. As regards sharpness - all macro lenses should be sharp at open aperture and stopping down will really only change DOF. These are very high quality lenses for critical applications. I'm referring here to...
Posted by johnriley on 02/03/2009 - 00:11
macro and portrait all in one
I thought the "F" in the Pentax lens designation ws to signify that it is designed for full frame. ie: The 100mm was updated from FA to DFA rather than DA as it covers a 35mm frame. F was Pentax's first auto focus series, then FA was the next. I've always assumed that the "F" came from auto focus.
Posted by iceblinker on 02/03/2009 - 02:09
macro and portrait all in one
Thanks guys (especially to Anvh for the images), lots of comforting and helpful posts on using a macro lens for portraiture. For some follow-on questions.. how about: 4) What is a suitable focal length to consider given I'll be using it on digital 90% of the time and film 10%. Portraits are m...
Posted by ewen_r on 02/03/2009 - 09:37
macro and portrait all in one
The Sigma 105 EX Dg Macro does have an aperture ring. It has a focus limiter which means the AF only searches over a limited focus distance. Speeds up macro focussing or alternately distance focussing. Can leave switched off also. From all accounts all three brands are very good. I have the Sigma.
Posted by beachboy2 on 02/03/2009 - 09:45
macro and portrait all in one
Around 55-70mm (80-105mm on 35mm format) is concidered to be the best range for Portrait. Most off the time it's the farther away you can be the better because the proportions off the nose and ears would be better. Some pro's shoot even with long tele lenses and use a walkie talkie to comunicate w...
Posted by Anvh on 02/03/2009 - 10:49
Pentax-A 100mm 2.8 on eBay
How about a ? Also has a 135 A* f/1.8 I've never seen so much rare gear on one site.... they've even got an LX2000 and for really sad people a Rollieflex for 4 Grand.... worst camera I ever owned (bog standard f/2.8 Planar version). Impossible to focus without a split image and everything back to...
Posted by shim on 03/03/2009 - 08:58
Lens Roadmap
Just checked pentax japan site, the roadmap is appeared . Two future lens DA 15 mm F4 and DA 60-250 mm availability published which I have not seen there before. Best wishes I normally view it from Last night it was not there, but now the link is back. Compared to the previous version...
Posted by polchraine on 03/03/2009 - 08:03
Pl Help,Lens test ,Buying DA 16-50mm from Ebay..
I don't think you need to worry with that one, its only a month old and you have proof of purchase so if there is a problem you can send it straight back to Pentax. I bought one off Ebay a couple of weeks ago for £300 with no box or pouch (using a 10% Paypal coupon) and it seems to be fine althoug...
Posted by Mike-P on 03/03/2009 - 10:59
Pentax 60-250 vs Pentax 50-135 vs Tamron 70-200 - a NON SCIENTIFIC lens test !
Thanks for that Nathan - the Tamron does look impressive! I will back those findings, my 70-200mm Tammy is really very good and if you want it, it will autofocus with a Kenko 1.5 TC. All I want now is better weather, so I can get out to use it.:(
Posted by loskeran on 03/03/2009 - 18:12
Sougor - 90-200mm Zoom+Macro f 4.5
Showing my age now but back in the 80's they were a fairly well respected third party lens maker. They weren't outstanding but their market was the people who weren't prepared to splash out on Pentax Tamron and Vivitar series 1 lenses. I can't quite remember but although the name suggests Japan to m...
Posted by MarkD on 04/03/2009 - 09:35
Pentax/Sigma 50 f1.4 Comparison
Hello all. As a newbie and recent recruit to the Pentax fold, I recently bought my first Prime lens, an old Pentax-M 50mm f1.7 from Ebay, in excellent condition. I am now really enjoying the experience of being able to shoot indoors (at this dull time of year) whilst also creating images containi...
Posted by salixarbour on 04/03/2009 - 11:47
Pentax/Sigma 50 f1.4 Comparison
"Tiny head movements" affecting "sharpness" is to do with depth of field (DOF) - the amount of depth that is in focus. DOF can be very shallow indeed at large apertures such as f1.7 or f2. You will have the same issues with any lens with a similar maximum aperture. A sharper lens won't give you a...
Posted by iceblinker on 04/03/2009 - 12:33
Pentax/Sigma 50 f1.4 Comparison
Sometimes you'll find it easier to achieve sharp focus with AF, other times with MF. I can't be more precise than that because it very much depends on the subjects and your skills. I find MF sometimes more accurate than AF when the subject is well lit and shows up clearly through the viewfinder -...
Posted by iceblinker on 04/03/2009 - 14:04
Pentax/Sigma 50 f1.4 Comparison
To be honest, if you're not getting the results you'd like with the Pentax-M 50mm f1.7 then it's not the lens that's at fault... If you want to see if AF would help, then try using trap focus. Set your camera to AF-C and it'll only let you take a picture when it thinks the lens is in focus (this ...
Posted by stevo on 05/03/2009 - 09:40
Pentax/Sigma 50 f1.4 Comparison
Thanks to all for picking up this thread. Stevo, I will try 'Trap Focus'; that looks like it could be very useful. Presently, I've just left the camera on AF-S, although it does beep and give me the red square when, I presume, it thinks it's in focus. I'll try the experiment to see what the diff...
Posted by salixarbour on 05/03/2009 - 10:47
Pentax/Sigma 50 f1.4 Comparison
although it does beep and give me the red square when, I presume, it thinks it's in focus. This is a common misunderstanding. The red square only shows where the camera is focusing, not that it's in focus. Focus confirmation is indicated by the green hexagon at the bottom of the viewfinder. If the g...
Posted by johnriley on 05/03/2009 - 11:16
Pentax/Sigma 50 f1.4 Comparison
The red square shows where and when the camera is focusing. It shows again if and once the camera has focused, with a beep. The camera does not beep if focused is not achieved. It is an indication of focus along with the green hexagon.
Posted by iceblinker on 05/03/2009 - 12:44
