Search results for 'back focus' - page 652
Just One Lens
Assuming I was using a film SLR it would have to be the SMC A 50mm/1.4 - sharp, lovely out-of-focus highlights and probably the best all round focal length for varied scenes and subjects. I would happily live without the auto focus as I hardly ever shoot action subjects and prefer to take a little t...
Posted by Juno 60 on 04/07/2006 - 13:58
I want to go wide-angle again ?
My wife has just bought me one of the 10-17 fisheyes so I'll be able to compare it with the Sigma 10-20 later this week when she gets back. Anyone know of some online example pictures so I know what to expect? She's in Singapore and was trying to source me a 16-45 but couldn't locate one. The pla...
Posted by niblue on 10/07/2006 - 08:21
T-mount and Adapter
I suppose that there might be an adapter that allows use of T-mount lenses on M42 cameras, but you'll need to research it. It has to do with the back-focus.
Posted by Arthur Dent on 07/07/2006 - 03:24
T-mount and Adapter
There are indeed such adapters - I've used them. T mount lenses are designed for use with them, so there won't be a back focus problem.
Posted by johnriley on 07/07/2006 - 08:07
Fast lens for a *ist DL?
I am looking for a good fast lens for natural lighting for use on my *ist DL. I want to have it still use the auto focus feature of the camera. I have been considering the Pentax SMCP-FA 50mm f/1.4 Lens I am kind of new and do not quite know for sure if this lens will fit my *ist DL and still...
Posted by Trigga Nometry on 06/07/2006 - 18:19
Initial shots with the 10-17 Fisheye
My wife just arrived back with my present from Singapore and I've banged off a few quick shots to see what the 10-17 fisheye is like. First impressions are that it seems razor sharp and the close focusing is very impressive - looks like it's going to be a fun lens. On reviewing the raw files on my c...
Posted by niblue on 11/07/2006 - 15:10
A New Arrival
The lake shot is stunning John. I like the depth of focus that is achievable with this lens for landscapes. Mine hasn't had much of an outing yet . . . but it will after September when I complete my move to Spain. Sadly the only lakes anywhere near to my house (about an hour's drive) are salt lakes ...
Posted by Mannesty on 22/07/2006 - 15:11
A New Arrival
superb. sparkling highlights in the lower left catch your eye and a trail of rocks lead the viewer along the shoreline to the sweaping mountianous skyline, which takes one back through the farmlands to the riplling water.
Posted by Don on 22/07/2006 - 15:42
Arriving at 1:1 with 3X
The simple answer is this: to get 1:1 the image on the sensor/film has to be equal in size to the real life object you are photographing. The math in photographic terms is too hard for a person like me to explain, I'll leave that to others, but suffice it to say that 50mm + 3x ext is too general....
Posted by Don on 14/07/2006 - 12:50
Arriving at 1:1 with 3X
You can use 50mm lenses with close up devices, bellows, etc., and get away with it because they are computed in a way that tolerates a considerable amount of abuse. The f2 and f1.7 versions are best for this. Try the same on a zoom and you will likely be disappointed, because the comnpromises in...
Posted by johnriley on 14/07/2006 - 16:19
Faulty Lense
My Pentax FA 80-320 lense won't auto focus and i've noticed that the automatic diaphragm pin lever does'nt spring back and even when i move it through the F stops one way the aperature opens up but when i turn it back again the aperature stays open. Could this also be the reason why i don't get any ...
Posted by Ratcatcher on 28/07/2006 - 23:02
Faulty Lense
The aperture is locked open when the lens is off the camera, and can be stopped down with the lever on the back of the lens. This action should be snappy and without any hesitation. If the lens is faulty a repair will be needed.
Posted by johnriley on 28/07/2006 - 23:14
2xConverter
The Pentax 1.7x AF Converter is a good option. I've used it with the Pentax SMC-FA 80-320 with good results. You do lose some contrast as well as a couple of f-stops, but nothing that can't be rectified in Photoshop with the *ist-D :D It also has the unique advantage of having internal focus - so...
Posted by MattMatic on 14/08/2006 - 20:16
2xConverter
All filters affect the light passing through them (they wouldn't be called filters else). In most cases they affect the light in such a way that enhances (we think) the captured image. In some cases they affect the light in some miniscule and probably imperceivable way, but affect it, they do. I ...
Posted by Mannesty on 22/08/2006 - 17:54
18-55 Kit lens
Hi Mattie, Don't know specifically about the 18-55mm, I got the 18-35 with my istD, and that was okay, but I've now upgraded to the 16-45 which is lovely - but then it should be 'cos it was £300. If you've not got a lens that you can use as a wide angle on a digital body (18mm gives the same f...
Posted by Daniel Bridge on 02/08/2006 - 18:06
Vivitar Lenses/Flash and DSL2
Back in the eighties bought a Pentax P30, then upgraded to Super A, with Vivitar S1 manual focus lenses that had the 'A' aperture setting. Also had the FD550 flash. Fantastic quality. Became redundant after I purchased a Sony Digital compact three years ago until Pentax produced an affordable Dig...
Posted by Phil Pearce on 15/09/2006 - 00:34
A newbie writes
Your camera has the original K mount with no elctronic contacts. The short answer is you can use any Pentax bayonet fit lens, manual or auto-focus although obviously only in manual focus mode. The exceptions are the very recent FA-J and DA lenses which have no aperture rings. So in manual ...
Posted by johnriley on 16/09/2006 - 14:48
A newbie writes
Thanks guys, that info will make things a little clearer.I'll be back to let you know what I get. :)
Posted by bumblebee on 17/09/2006 - 11:58
Recommendations on lenses please
Hi Barry, and welcome to the forum. The great thing about digital is that you can take 1000 photos an hour and it's free. I've never used the sigma lens, but put it on the camera and just shoot a load of pictures. You'll see if you're getting good images or not. There's also varying ideas...
Posted by LiamD on 17/09/2006 - 09:00
Recommendations on lenses please
I tried every setting I could think of with the Pentax 75-300 but was so disappointed with the images that I took it back this morning. I've used telephotos before and don't believe it was my technique. Instead I went for a new Pentax DA 16-45 and will get a 50-200 in due course I think.
Posted by barry on 20/09/2006 - 01:23
