Search results for 'back focus' - page 676
Quick question on what is 'real' macro
My advice, for what it's worth. Don't waste even a fiver. Put that money towards a decent macro lens. The SMC Pentax F, FA & DA 100mm 1:2.8 are very good, so too is the Sigma 90mm Macro lens. The only 'macro' zoom lens I use is a Sigma 70-300mm APO lens which is very good for keeping your dis...
Posted by Mannesty on 31/07/2007 - 13:04
Quick question on what is 'real' macro
A true macro lens has a magnification ratio of 1:1 or, in the case of older manual focus lenses of 1:2, 1:1 being achieved by a dedicated extension ring. 1:4 is close focusing, but not macro.
Posted by johnriley on 31/07/2007 - 14:43
SMC FA 35mm F2 AL back in stock
I thought I would buy some full frame glass before Pentax stopped making it completely. Park Cameras said 2 weeks ago they thought the lens had been discontinued, but it still showed on Pentax website. I placed a speculative order with them anyway. They called to say the lens is in today : ) The ...
Posted by smc on 01/08/2007 - 22:28
DA 50-200 Problems
Right, I'm having a fair few problems when using my DA 50-200. Firstly the focus seems to be off every time with it focusing behind what I want to shoot. Secondly it won't focus to infinity (or lock focus on distant objects) when at 200mm. Anyone got any suggestions? I'm getting quite tired of many ...
Posted by Tyr on 03/08/2007 - 10:42
DA 50-200 Problems
Right, I'm having a fair few problems when using my DA 50-200. Firstly the focus seems to be off every time with it focusing behind what I want to shoot. Secondly it won't focus to infinity (or lock focus on distant objects) when at 200mm. Anyone got any suggestions? I'm getting quite tired of many ...
Posted by ChrisA on 03/08/2007 - 10:53
DA 50-200 Problems
Right, I'm having a fair few problems when using my DA 50-200. Firstly the focus seems to be off every time with it focusing behind what I want to shoot. Secondly it won't focus to infinity (or lock focus on distant objects) when at 200mm. Anyone got any suggestions? I'm getting quite tired of many ...
Posted by Tyr on 03/08/2007 - 11:22
DA 50-200 Problems
Especially for close objects, are you sure it is back focusing, or is it possible that the focus sensor is simply off from where you think it should be? If you assume the focus is on center, but is actually 5%-10% or further down the frame, this can cause a huge problem when you're not aware of i...
Posted by amoringello on 03/08/2007 - 12:19
DA 50-200 Problems
Do you get these problems only with that lens? Are you able to reproduce the problem under controlled conditions? I've only really noticed it on this one lens because of the very narrow DoF when close but also because it won't lock focus on distant objects at 200mm. My A50f1.7 seems to be back fo...
Posted by ChrisA on 03/08/2007 - 12:21
My new DA* 16-50mm lens.....
But isn't it weather sealed?? It is, and so, to a degree, am I. But poor weather = poor light = poor pictures. Physically, the lens is a bit garish for my taste, with all the gold lettering everywhere. It's made of plastic, so it lacks the reassuringly solid feel of a metal lens. It's also my ...
Posted by George Lazarette on 05/08/2007 - 18:42
My new DA* 16-50mm lens.....
I keep mistaking the focussing ring for the zoom ring Luckily, I managed to get that right straight away but my husband and friends always use the focus ring instead if the zoom ring when they play with my new toy. I was wondering if it can damage the mechanism because if it can, I will always give ...
Posted by Cherrylicious on 07/08/2007 - 14:13
My new DA* 16-50mm lens.....
Well here are my first few photos with my new DA* 16-50.. I’m afraid there isn’t anything of any great artistic merit so please don’t be too harsh. :? (To view the large images you will have to be a Flickr member.) I have not done any manipulation to these images other than minor adjustmen...
Posted by Nyami on 07/08/2007 - 23:12
My new DA* 16-50mm lens.....
I am happy to believe that my DA* 16-50 must be vastly superior to my DA 18-55 lens. I just have to remember that the focus ring is not the zoom ring :!:
Posted by Hyram on 09/08/2007 - 08:37
Idle question for a Friday night
thank you magnus, ive heard some things about aspherical lenses though, something along the lines of crap quality. I've no experience of the Sigma 20mm F1.8 but I'd be very surprised if it's crap. The Sigma prime lenses I've played with or owned (I used to have one of their 28mm F1.8 manual focus pr...
Posted by niblue on 12/08/2007 - 12:08
K100 soon ...should I go for an older 80-200mm 4.5 ?
Hi Guys, As I contemplate a K100D purchase on a budget I have started to gather about me a nice old prime or two :) I see the 80-200 4.5 has had a few good reviews... But is it a good idea for the K100... is the downside of no auto more trouble with zooms so I should get the DA 50-200 ? use wo...
Posted by Transit on 04/08/2007 - 06:34
K100 soon ...should I go for an older 80-200mm 4.5 ?
Hi Guys, As I contemplate a K100D purchase on a budget I have started to gather about me a nice old prime or two :) I see the 80-200 4.5 has had a few good reviews... But is it a good idea for the K100... is the downside of no auto more trouble with zooms so I should get the DA 50-200 ? use wo...
Posted by George Lazarette on 04/08/2007 - 08:57
K100 soon ...should I go for an older 80-200mm 4.5 ?
Hi, I have a nice Tokina 70-210 Auto Focus that I'm selling. This is a really nice lense and I've used it succefully with my K100D. As will most AF lenses it can be used in manual mode, but I found the Autofocus and auto appature really useful. Yours for the bargain price of £30 if you're intereste...
Posted by Donut on 06/08/2007 - 11:18
Reverse mounting for MACRO
One of these days I will get the Pentax 100m Macro, but :roll: in the meantime I have read on previous threads you can get some pretty good effects reverse mounting the 50mm 1.7 FA. :?: Would you, can you do the same with the 50mm 1.4, which I now have (presuming yes) and if so, what accessory/...
Posted by ChrisA on 05/08/2007 - 13:00
Reverse mounting for MACRO
Thx Chris, Oh, maybe I need to rethink then. I do have one of these: Digital High Definition 0.45x wide angle with Macro screw on lens with assort of adaptor rings my OH brought back from USA: It is pretty good as I did take the image of the feather with it, this is about the max I can ...
Posted by Lilly on 05/08/2007 - 13:17
Reverse mounting for MACRO
Hi Lilly, It's very easy to see how close a reversed 50mm lens will get you, just hold it round the wrong way in front of your camera and see what the view through the viewfinder is like. You'll have to set the aperture with the ring on the lens, and have the camera in manual, but you can at lea...
Posted by Daniel Bridge on 05/08/2007 - 14:21
Reverse mounting for MACRO
Ok, a couple more results. 28mm lens, normal orientation attached to 65mm tube: Magnification 2.4 28mm lens, reversed on to 65mm tube: Magnification 4.2 (5mm of ruler scale occupies almost the entire width of the frame). And just to add a very modest, but I'd contend, more practical contrib...
Posted by ChrisA on 06/08/2007 - 19:42
