Search results for 'back focus' - page 1054
Siggy 150-500, DA*300, or something else
Which camera body do you have? The K-5 is best suited probably. However, we could all reflect on the brilliant wildlife images shot over the years using manual focus...technique plays a huge part in this. For me too, so I'm not suggesting anyone is under par with their ability. Practice, pract...
Posted by johnriley on 23/07/2012 - 20:28
Siggy 150-500, DA*300, or something else
Which camera body do you have? The K-5 is best suited probably. However, we could all reflect on the brilliant wildlife images shot over the years using manual focus...technique plays a huge part in this. For me too, so I'm not suggesting anyone is under par with their ability. Practice, pract...
Posted by Blythman on 23/07/2012 - 20:54
Siggy 150-500, DA*300, or something else
Hi Alan, If you are frustrated (given the wonderful photos you often take and share with us)then little hope for the rest of us. I would guess that if you go for faster glass it will give you latitude when using a TC but surely at some stage very shallow depth of field comes into play as an ob...
Posted by wvbarnes on 23/07/2012 - 21:13
Siggy 150-500, DA*300, or something else
Mike, is your DA*300 by itself faster than the Bigma? What are images like when cropped to same size as the Bigma set at say 450mm (I often tend to pull back just a little from 500mm)?
Posted by Blythman on 23/07/2012 - 22:19
Siggy 150-500, DA*300, or something else
I have the older Sigma 120-400 HSM (i.e. no OS). It seems to focus rather well, however most lense become manual focus with even a 1.5x converter as the AF sensor generally stops working at somewhere between f5.6 and f6.3 (at lease on my K7). The only lens I have that seems consistent with my Kenc...
Posted by beakynet on 24/07/2012 - 13:57
Siggy 150-500, DA*300, or something else
Mike, is your DA*300 by itself faster than the Bigma? What are images like when cropped to same size as the Bigma set at say 450mm (I often tend to pull back just a little from 500mm)? Sold my DA* 300mm a while back, still have a F* 300mm f4.5 which is just as sharp but lacks WS and SDM. Must admit ...
Posted by Mike-P on 24/07/2012 - 14:06
Siggy 150-500, DA*300, or something else
Must add I do wish Sigma would put a focus limiter on their big lenses, I notice even the 120-300mm doesn't have one.
Posted by Mike-P on 24/07/2012 - 14:07
DA* 16-50mm f2.8 Question
Hi there My DA* 16-50mm jammed this afternoon on my K5. The battery was fully charged. It suddenly "froze" and I couldn't turn either the zoom or focus rings. I switched the camera off and removed it, then very gently eased the rings a little and they freed up. The assembly feels a little looser ...
Posted by mecrox on 23/07/2012 - 20:52
DA* 16-50mm f2.8 Question
The clue's in the fact that it's recently been dismantled, or at least 'serviced'. I'd send it straight back asap, i.e. to-day!
Posted by JohnX on 24/07/2012 - 08:55
DA* 16-50mm f2.8 Question
Yep, box it up, send it back before any more damage is done!
Posted by beakynet on 24/07/2012 - 13:52
F 70-210mm vs DA 55-300mm pixel peep
I'm not convinced by the test :P It looks like there are focus errors (looking at the definition of the top right wire).... I'd use the LiveView and focus with that to eliminate any phase AF correction errors ;) Matt
Posted by MattMatic on 24/07/2012 - 13:26
F 70-210mm vs DA 55-300mm pixel peep
LV bypasses the calibration it's WYSIWYG (allegedly). The problem is that it's almost impossible to focus a lens accurately especially at at a distance, the slightest movement in the focus ring is probably 3 feet :shock: Some sort of micrometer collar would be handy. For closer testing (stamp...
Posted by Algernon on 24/07/2012 - 15:38
Samsung 100mm Macro in Bradford
I picked the same lens up from the same place (I shop there often)a while back... It's quality.
Posted by DaveHolmes on 01/08/2012 - 21:33
M42 Infinity Problem
Hello, I have a 28mm Takumar (in photos) and for some reason it wont focus to infinity on my k20d and just stays out of focus, however it focuses fine for portraits a couple of foot away. Is there any way I can solve this issue? I'm baffled by it haha
Posted by NickJS on 01/08/2012 - 19:09
M42 Infinity Problem
I think your problem is the adaptor, you need one that allows focus to infinity. These dont have the flange plate to the front and fit flush with the mount of the camera mount. This is the pentax one http://www.srsmicrosystems.co.uk/156/Pentax-Mount-Adapter-K.html I use one i got from eb...
Posted by punkrockemo on 01/08/2012 - 19:28
M42 Infinity Problem
I think your problem is the adaptor, you need one that allows focus to infinity. These dont have the flange plate to the front and fit flush with the mount of the camera mount. This is the pentax one http://www.srsmicrosystems.co.uk/156/Pentax-Mount-Adapter-K.html I use one i got from eb...
Posted by Frogherder on 01/08/2012 - 19:57
Sigma 2x teleconverter on a Sigma 300/f2.8
I use to have a Sigma 70-200 and I have the DA*300. And I have a 2x Sigma in the classifieds, used only for a few test shots. With the 70-200 it is OK, but with DA*300(manual focus) is ruining the picture. DA*300 at 69% is better than DA300+2x Sigma. I didn't have the DA*300 when I bought the c...
Posted by GeorgesM on 03/08/2012 - 07:54
Sigma 2x teleconverter on a Sigma 300/f2.8
Hi Mike Many thanks for the constructive info. For the second time (at least) this morning I am confused because I have just been onto the Sigma Imaging site and their compatibility list for teleconverters/lenses definately shows that the Sigma 70-200 APO DG HSM has full auto focus in the Pent...
Posted by eoinandpaula on 03/08/2012 - 10:07
Tamron BBAR and Tamron Adaptall mounts
That is correct, but if you remove the central adapter from a T2 mount it's the same as a T mount. Sorry, Algi, I cannot agree with this. Maybe there is a third T-mount variant that neither of us has ever seen. The O/D of the parallel portion (onto whick the camera body specific adapter fits, ...
Posted by DoctorJeff on 11/08/2012 - 09:36
Tamron BBAR and Tamron Adaptall mounts
That's the same... when you remove the inner ring off the T2 it has an outside diam of 49mm and a grove diam of 46.5mm so the grubscrews project 1.25mm into the grove. The focal length is adjusted as per the Wikipedia link above: "Because the T-mount has a long flange distance of 55 mm and...
Posted by Algernon on 11/08/2012 - 10:57
