Search results for 'back focus' - page 714
Question about Pentax SMC FA 2.8/100mm Macro
I had the pleasure of using a 50mm FA macro last year and had the impression that the clamp was supposed to stop the focus ring from moving at all, so you could lock a particular macro ratio and not worry about it drifting off
Posted by Mongoose on 05/06/2008 - 22:50
Question about Pentax SMC FA 2.8/100mm Macro
The clamp button is not to stop it creeping it's so that you can simulate a manual focus feel. As a lot of people like to use macro lenses in manual focus mode Pentax provided a little focus damping screw on both the FA50 and FA100 so that the user could set the "feel" of the focus. ...
Posted by JohnMcD on 06/06/2008 - 08:40
Question about Pentax SMC FA 2.8/100mm Macro
The clamp button is not to stop it creeping it's so that you can simulate a manual focus feel. Sorry John, but that is inaccurate mis-information. The clamp switch on the FA 100mm Macro lens is to stop the lens creeping when pointing vertical (up or down). On the D-FA lenses it is to lock the p...
Posted by Mannesty on 06/06/2008 - 09:12
Question about Pentax SMC FA 2.8/100mm Macro
The clamp button is not to stop it creeping it's so that you can simulate a manual focus feel. Sorry John, but that is inaccurate mis-information. The clamp switch on the FA 100mm Macro lens is to stop the lens creeping when pointing vertical (up or down). On the D-FA lenses it is to lock the p...
Posted by JohnMcD on 06/06/2008 - 20:18
Which lense??
Interesting comments here. On another forum they were arguing that for landscapes you'd want to 50-200 not the 10-20 and I think I can understand why, the very wide angles gives some remarkable effects in the sky and clouds (which I like). I have the 10-20 and it is the lens that keeps creepin...
Posted by mikew on 06/06/2008 - 22:31
Which lense??
Badbrother.... I don't underst my sample of the 16-45 doesn't have that wobble some reported... i have to come back and say thanks to Don for tipping me on "wobble". and yes, my lens does wobble a bit and i try another set of test in poking the the tip of the lens in different d...
Posted by badbrother on 13/06/2008 - 19:59
Pentax K SMC f1:1.2
don't want to say what I paid for it, ( duh ), but what would you say I should have paid ??? Back in 1987 when I was chosing between the KA 50 F1.4 and the KA 50 F1.2, the 1.2 version sold for about £200! The 1.4 was £100.
Posted by beakynet on 09/06/2008 - 13:34
pentax manual lenses on *ist DS
Hi, I've a bit of a dumb question about using the old Pentax manual focus lenses on the *ist DS - I was thinking about getting one of the large aperture 50mm ones off ebay to try as a portrait lens. The only thing is, my eyesight is a bit duff. I was wondering if the focus indicator will sti...
Posted by smithy on 10/06/2008 - 00:22
pentax manual lenses on *ist DS
the little green symbol will indicate when focus is achieved. in fact if you set the body to af, and hold the shutter while adjusting the manual focus ring, it will fire the shutter as soon as focus is achieved (snap in focus, if you still got your owners manual).
Posted by Don on 10/06/2008 - 00:29
pentax manual lenses on *ist DS
OOoo I'm glad I stumbled on this thread. I use an old manual 62 - 170mm lens ( I think it is ), which I have left over from my Super ME. I've been manually focusing thinking that's what I had to do. But you ( very sharp eyed ) people have said my photos are slightly out of focus. Having said ...
Posted by Father Ted on 10/06/2008 - 09:16
pentax manual lenses on *ist DS
I'm a bit long in the tooth with dodgy eyesight but I use all my older lenses on my DL2. The focus indicator works well enough for me. I agree though if your looking to buy, then go for the fastest pentax brand 50mm with the A setting as they are by far the easiest to use. I have found the auto foc...
Posted by Madmapper on 17/06/2008 - 17:48
Tamron 18/250
I dont have one either so this may be of dubious value... I had an extensive play with one on Saturday evening. My neighbour across the street bought one for his Canon (not sure which model but 10mp) and I was pretty impressed. Very nicely balanced and a quality feel to it and the focus was stunning...
Posted by gartmore on 10/06/2008 - 22:28
Tamron 18/250
the focus was stunningly quick I suspect that might just be the Canon. I had a play with the Pentax one on my K10D in Chris's shop - I bought the Sigma 10-20 instead in the end - and the focus was acceptably quick, comparable with a lot of Pentax-fit lenses, but not stunning by any measure. No...
Posted by ChrisA on 10/06/2008 - 22:42
The perfect kit
do they have to be in current production? Assuming current lenses only and ignoring price: Pentax DA 12-24 Pentax DA* 16-50 Pentax DA* 50-135 Pentax DFA 100mm Macro Pentax DA* 300mm I would still have some serious thinking to do for Sigma 10-20 vs Pentax 12-24. I've seen what the 12-2...
Posted by Mongoose on 11/06/2008 - 15:58
The perfect kit
Keep your eyes open for specialized glass.... I got an 85mm soft focus, a 100mm macro,10-17 fisheye, 1.7 af teleconverter.... some lenses will hold thier value better than others. All lenses will hold thier value better than digital bodies. so keep that in mind when you come accross something t...
Posted by Don on 11/06/2008 - 16:21
The perfect kit
istDS On manual focus days: 24/2.8 SMCA 35/2.8 SMCA 50/1.7SMCA 35-105SMCA Plus the odd 50/1.4 Super Tak or 85/2 SMC-M. On AF days: 24/2.8 Sigma (amazing flare!) 35/2 FA - very nice indeed 50/1.7F 28-105FA Powerzoom - not sure why, but I really like this lens ...
Posted by smc on 12/06/2008 - 16:39
The perfect kit
Limited primes will be much better than Star zooms. Limited Primes and Star primes are much closer, generally the Star primes are long where as the Limited primes are wider. I love my 16-50, it is very very sharp at 50mm across the whole frame. Softer at 16mm and has some focus curvature (soft co...
Posted by Tyr on 12/06/2008 - 19:24
Fast "Noirmal" Lens....
Don - good idea, but... I have an old (but good) A-28 2.8 that I use, but find myself struggling with manual focus... (One of the downsides of getting older, I guess... :( It's a rude awakening when you find your camera focuses better than your eyes can... thank goodness for diopter adjusta...
Posted by Classvino on 12/06/2008 - 16:21
Fast "Noirmal" Lens....
looking at your lens selection there I wonder.... 35 2.8 macro? bearing in mind of course most macros focus a little slower, and hunt more in low light, but.... I like the specialty optics!
Posted by Don on 12/06/2008 - 16:35
Fast "Noirmal" Lens....
I have an old (but good) A-28 2.8 that I use, but find myself struggling with manual focus... (One of the downsides of getting older, I guess... :( It's a rude awakening when you find your camera focuses better than your eyes can... thank goodness for diopter adjustable viewfinders...) There i...
Posted by iceblinker on 12/06/2008 - 17:20
