Search results for 'back focus' - page 812
Pentax DA 16-45
looking well after it, caring for it etc. etc. Ha ha ha....oh Lidy, you don't know me very well yet :D Perhaps you have a bad copy Darkmunk? I had another copy (documented here) and had it replaced as it was all wobbly and the focus kept dropping off. This one is much tighter but the image qua...
Posted by Darkmunk on 24/09/2009 - 09:26
Pentax DA 16-45
Since dropping it (really, an innocuous little tumble onto the grass) it has started refusing to focus at infinity, stopping the camera from firing. it just makes a little noise like it's having a go but can't do it. Did the same with my Tamron SP AF 24-135mm and have the exact same problem (al...
Posted by Mike-P on 24/09/2009 - 17:08
Pentax DA 16-45
Here are some shots taken this morning after making sure the camera was focusing properly. Both the 16-45 and fa50 needed the same debug tweak to stop them focusing behind. You'll notice the 16-45 shots are also underexposed - this happened consistently so I saw no reason to compensate for this test...
Posted by Darkmunk on 24/09/2009 - 17:30
Pentax DA 16-45
It was my default lens until I returned to the UK last Xmas and was too tempted by the versatility - and £50 cashback + VAT refund :D- of the DA17-70. However, at current prices there's no question I'd go for the DA16-45. The 17-70 is a tad sharper, has a more useful range (though I sometimes miss t...
Posted by Hythloday on 24/09/2009 - 18:06
Pentax DA 16-45
I had always been impressed with my 18-55, maybe I have an exceptionally good one, I dont know. I came to the conclusion a while back that there must have been quite wide variation in this lens (I'm talking about the one that came with the K10D/100D, not later incarnations). There's such diversity ...
Posted by Dr. Mhuni on 24/09/2009 - 18:36
Pentax DA 16-45
I have a very early 16-45 (bought it when it came out) and have been very impressed with the quality of images produced. The out of focus rendition isn't as nice as the DA17-70 and FA24-90, but it's a very capable lens indeed. Maybe the variation is down to where they're made?? :? It's true th...
Posted by MattMatic on 25/09/2009 - 10:15
Pentax DA 16-45
Right here are my images, Darkmunk - though I have to admit to having :?:oops::evil::twisted:-ed up with the FA35 one (don't have a nifty fifty). This was the first image I took and I had the camera set up for continuous shooting as opposed to 2 sec delay (so it may have been prone to trigger shake,...
Posted by Dr. Mhuni on 25/09/2009 - 14:30
Pentax DA 16-45
Thanks Doc, Really good of you to take the time. You do appear to have a better copy of the lens. I can see how your scene might fool the exposure but I can't see any excuse for mine. (it was set to spot metering and focus) Not sure how PSE works but in PhotoShop, just marquee any section and ...
Posted by Darkmunk on 25/09/2009 - 14:56
Pentax DA 16-45
Just to get a slightly better comparison I set my 16-45 to about 35mm and shot some closer houses. As with all my tests these are JPEGs totally untouched. These two 100% crops were on the tripod like all the others but the first is without mirror lock-up. Quite a difference! But both pretty murky...
Posted by Darkmunk on 25/09/2009 - 15:19
2 Pentax Lenses seen from a different perspective
Now I know I won't dare taking any apart :shock: Thanks for sharing :) Taking them apart is easy. Putting them back together is something else...
Posted by pentaxian450 on 26/09/2009 - 02:41
Pentax 1,7x af adapter: is a good converter?
I want to buy a pentax 1,7x adapter (that I had for few day for lens with manual focus) , but I never used it with af lens. Is it a good choice for sigma 70-200 2.8 apo and for pentax F 300 4,5 or there are better converter or the af will not work?
Posted by mpg on 24/09/2009 - 22:20
Pentax 1,7x af adapter: is a good converter?
The Pentax 1.7 T/C is regarded as an excellent teleconverter. It will provide auto-focus for any lens within a limited range. I have used mine with my F* 300mm 1:4.5 and have no complaints. G
Posted by George Lazarette on 25/09/2009 - 00:03
Pentax 1,7x af adapter: is a good converter?
Tried very hard not to rise to the bait but how long do those poor Dobs have that contraption on their heads? With their ears working as nature intended they would hear sound from a mile away if you want to trigger light what is wrong with a collar? Castration is a bit different there are times w...
Posted by Thordell on 25/09/2009 - 17:41
Pentax 1,7x af adapter: is a good converter?
back to TCs... as I posted elsewhere got one from Ebay, and have been having a play. It was fairly easy to use - easier TBH than the process of setting up a Photobucket account, resizing the pictures and looking through the forums to find out how to post them here. Anyway, for comparison a pic...
Posted by kfxposure on 03/10/2009 - 21:54
Some good offers (I think) on Amazon
Thanks RR! Fantatic shot btw, really lovely. I did a little bit of reading since posting this thread and then decided to buy it. The seller is an established photo retailer in Germany so that shouldn't be an issue. It appears that there was limited supply - the £331 offer is now gone and it's lis...
Posted by Wolfson on 26/09/2009 - 13:19
Standard ND Lee filters: resin or ProGlass?
When lights come from the back of the camera it can reflects directly into the lens through the square filter. When you've a screw in only the front of the filter is expose so every light needs to go through that filter if it wants to reach the sensor. A coating might lessen the effect but would...
Posted by Anvh on 20/11/2009 - 13:32
Standard ND Lee filters: resin or ProGlass?
When lights come from the back of the camera it can reflects directly into the lens through the square filter. When you've a screw in only the front of the filter is expose so every light needs to go through that filter if it wants to reach the sensor. A coating might lessen the effect but would...
Posted by Mongoose on 20/11/2009 - 14:19
SDM issues? A straw poll.
Since Dad never posts here, I'll report his for him. A 50-135 blew its SDM and fell back to screw drive, when we had the lens repared we discovered that the camera's (A K10D) SDM drive workings were also knackered so that had to go in for repair too. No idea if it was coincidence or if one compon...
Posted by Mongoose on 28/09/2009 - 13:55
SDM issues? A straw poll.
Since Dad never posts here, I'll report his for him. A 50-135 blew its SDM and fell back to screw drive, when we had the lens repared we discovered that the camera's (A K10D) SDM drive workings were also knackered so that had to go in for repair too. No idea if it was coincidence or if one compon...
Posted by RichardDay on 28/09/2009 - 14:30
SDM issues? A straw poll.
Hi Richard,Just sent my 50-135 back to SRS.SDM has been ''iffy''for a while and recently completely failed.Hoping for a speedy resolution.:shock: Regards Tony.
Posted by Tony-O on 28/09/2009 - 15:12
