Search results for 'back focus' - page 981
Lenses we use, lenses we don't...
I'm probably a little early in my Pentax life to answer this question properly - to explain. The K5 and supporting lenses have been purchased to back up my Leica M and Leica lenses, for when they are not the right kit for the situation before me. Therefore at this moment in time, my all time m...
Posted by parigby on 05/07/2011 - 18:56
Lenses we use, lenses we don't...
Bit hard to say really as I have never really quantified what I use and how often but I would say... Used quite a bit a like a lot: SMC Pentax-M 100mm f/2.8 Used much less than it ought to be especially considering the cost: SMC Pentax-FA 43mm Ltd. Of my expensive lens purchases (the DA* 50...
Posted by womble on 05/07/2011 - 19:04
Lenses we use, lenses we don't...
I'm probably a little early in my Pentax life to answer this question properly - to explain. The K5 and supporting lenses have been purchased to back up my Leica M and Leica lenses, for when they are not the right kit for the situation before me. Therefore at this moment in time, my all time m...
Posted by Don on 05/07/2011 - 19:07
Lenses we use, lenses we don't...
Most used is a 70-200mm 2.8 Tamron. Where it goes, the K10 follows. Least used is a Pentax 28-80mm 3.5~4.7 that came with my Z1. I had to dig it out to rememer what it was. I think the plastic switch fell off it once, and I had to glue it back together. Gary
Posted by JForeigner on 05/07/2011 - 21:52
Lenses we use, lenses we don't...
My most used lens was by a wide margin my 43mm - now it is gone, unfortunately. I am considering, if I buy a new when I get back or start using my A-50mm again. If I buy another 43mm it will most likely be a 2nd hand (hint!), or I waite in anticipation of a Richo takeover sale ;-) I have lenses I...
Posted by Joe S on 06/07/2011 - 02:30
Lenses we use, lenses we don't...
I never change lenses out of doors or in the car (aversion to dirt and dust getting in, although it still does, of course!), so I have to make a decision what to fit before leaving home. I know the mk1 kit lens will do everything I want it to do (although an extra bit of reach at either end woul...
Posted by bwlchmawr on 09/07/2011 - 07:37
Lenses we use, lenses we don't...
The currently popular are .... {...} Chinon 28mm f2.8 (also very sharp) {...} The lenses I don't use much and probably never will are ..... {...} Pentax A 35-80mm zoom (OK, but little more) I have a Chinon 28/2.8 but don't use it so much because my copy's near-fo...
Posted by RioRico on 12/07/2011 - 01:31
Lenses we use, lenses we don't...
I wouldn't rate the A35-80 as anywhere near 'OK' when used normally. IMHO it's one of the worst lenses Pentax ever sold. My copy isn't that bad - but I don't use it, which probably says all I need to. I used to have a Takumar Bayonet 80-200mm zoom that was way worse. I rather like the Chinon ...
Posted by andrewk on 12/07/2011 - 09:03
Help me choose
Don't forget to consider the Sigma 17-70/f2.8 It has excellent optical quality for it's price range and as well as a good focal range it has a really close focus distance which is very useful indeed. I soon grew out of the kit lens and bought the Sigma 17-70 as a stop gap before my intended go...
Posted by Smeggypants on 06/07/2011 - 09:05
Help me choose
I currently have three of the four :) DA16-45 - astonishingly good value. Superb for landscapes. Very light weight. Not so keen on the bokeh though. DA17-70 - lovely lens. Excellent range. Super sharp and contrasty. Fairly heavy, and SDM only (only a problem with older dSLRs). Creamy bokeh. Ou...
Posted by MattMatic on 06/07/2011 - 10:39
Help me choose
Will: .... very wide angle lenses always look awful at 1:1. It's well known that the 16-45mm is better below 24mm than the 18-55m after that they are similar. You can see the PF on the 16-45 though. The 18-55mm doesn't look in focus ( look at the downspout ) John: You must have a very good 35 and...
Posted by Algernon on 06/07/2011 - 18:15
Help me choose
What's most interesting here is the extraordinary quality of the Pentax kit lens, esentially a lens which was "given away" with various cameras. I have no axe to grind on this one: I don't own any expensive or exotic limited lenses nor ever will. I must be very lucky with my version of the mk...
Posted by bwlchmawr on 06/07/2011 - 19:34
Help me choose
The distance to the subjects at the edge of the frame might be a factor. If they fall outside the depth of field then sharpness would suffer. Coming in a bit late on this one, but just to pick up John's point... I thought the whole point of a rectilinear lens was that the focus distance refers to...
Posted by ChrisA on 06/07/2011 - 19:45
Help me choose
It's well known that the 16-45mm is better below 24mm than the 18-55m after that they are similar. You can see the PF on the 16-45 though. The 18-55mm doesn't look in focus ( look at the downspout ): Hmmm... the shots were at f8 and live-view focussed on the same spot. Could it a be curved-field eff...
Posted by Pentaxophile on 06/07/2011 - 20:00
Help me choose
The distance to the subjects at the edge of the frame might be a factor. If they fall outside the depth of field then sharpness would suffer. Coming in a bit late on this one, but just to pick up John's point... I thought the whole point of a rectilinear lens was that the focus distance refers to...
Posted by johnriley on 06/07/2011 - 23:12
Help me choose
Whilst I dont have the M primes you mention I do have the 35mm, it takes great pictures and it is a light as feather and focus is ver rapid- the plastic mount is a bonus to me because it saves weight. You cant go wrong at the price. It is a perfect walkaround general purpose lens for me.
Posted by japers45 on 13/07/2011 - 18:19
FA Limited lenses
Algi, you are misreading the information. So what is wrong with the 16-45mm showing excellent performance? It's an excellent lens. Gary doesn't give you the figures though, so you can't compare with later tests. The kit lens results are also very good but nowhere do they suggest the edge is bette...
Posted by johnriley on 08/07/2011 - 11:41
FA Limited lenses
but this graphic actually shows at f/5.6 the edge is higher than the centre By a whisker, and that can easily mean slight decentreing just as well as a slight focus shift. I would say that's close enough to mean even coverage. As regards the second test, why believe that one and not another one? ...
Posted by johnriley on 08/07/2011 - 13:54
FA Limited lenses
I saved this as a bookmark sometime ago. Someone used the Paterson chart to show how bad a 'K' Series 200mm f/2.5 was compared to the later A 200/2.8 ED It quite clearly shows that all the colours aren't in focus at the same time.
Posted by Algernon on 08/07/2011 - 15:26
8-16 Sigma soft?
Sometimes I have to resort to live view to get good focus on my 10-20mm. I don't think it's a BF/FF thing, just the AF system struggling to find something to lock on to. I can point my 10-20 at a nearby boulder, it focuses, but then I point it at infinity and the AF doesn't kick in! I'm sure I remem...
Posted by Pentaxophile on 08/07/2011 - 09:56
