Search results for 'back focus' - page 1001
DA* 300mm F4 with TC vs. Sigma 150-500mm
Hi, I currently own the mentioned Sigma and while it's a great lens I can't help wondering if the combination with the DA 300mm and a TC would work as well. Do any of you have that combination? Maybe even tried both? I know the DA set would set me back quite a lot (I would obviously sell the S...
Posted by Luftwalk on 20/09/2011 - 07:04
DA* 300mm F4 with TC vs. Sigma 150-500mm
Both of those are great. Does AF suffer at all because of the TC? Did you notice a decline in sharpness and general IQ because of the TC? Thanks again for helping out. AF does suffer with the Pentax 1.7 converter because the AF happens in the converter and not the lens, you focus manually to inf...
Posted by mille19 on 20/09/2011 - 17:59
DA* 300mm F4 with TC vs. Sigma 150-500mm
did you own both lenses perhaps? Had the F1.7x on the Siggy 150-500. TBH was not impressed, @500mm the Siggy is not great anyway, but to get good focus I had to be pretty close before the 1.7x could adjust. No longer have the 1.7x, now have a Teleplus Pz-AF 1.7X Teleconvertor which seems to work...
Posted by davex on 20/09/2011 - 19:16
DA* 300mm F4 with TC vs. Sigma 150-500mm
did you own both lenses perhaps? Had the F1.7x on the Siggy 150-500. TBH was not impressed, @500mm the Siggy is not great anyway, but to get good focus I had to be pretty close before the 1.7x could adjust. Have never had a DA* 300, if this weekend disappoints it will be next on my list :wink: ...
Posted by mille19 on 20/09/2011 - 19:56
DA* 300mm F4 with TC vs. Sigma 150-500mm
Think it is almost a Pentax right of passage to get this, do wonder how many people keep hold of it though. Davex. I'll keep hold of your old one. I bought it with several uses in mind. One is a partner to the DA*300 (which I'm planning as a future upgrade from my 55-300). I've seen some very g...
Posted by DrOrloff on 20/09/2011 - 21:48
SIGMA APO 300-800mm F5.6 EX DG HSM
I want one. Only two things holding me back, its not in Pentax fit, and I don’t have £7000.00, dam. :cry: Take care.
Posted by ChrisR on 21/09/2011 - 08:51
SMC pentax F Zoom 35-70mm macro lens 1:3.5-4.5
I got this lens a couple of weeks ago and had a very odd experience with it. Initially I found it very hard to get a decent image without loads of Photoshop going on, exposure seemed well off, very flat etc (I posted a bit of a rant here about it). For reasons still unknown to me, the following day ...
Posted by bernado on 22/09/2011 - 13:11
SMC pentax F Zoom 35-70mm macro lens 1:3.5-4.5
I got this lens a couple of weeks ago and had a very odd experience with it. Initially I found it very hard to get a decent image without loads of Photoshop going on, exposure seemed well off, very flat etc (I posted a bit of a rant here about it). For reasons still unknown to me, the following day ...
Posted by AndrewA on 22/09/2011 - 18:41
DIY PK-mount Carl Zeiss Jena Pancolar 50/1.8
Ive had a Carl Zeiss Jena Pancolar 50mm f/1.8 for about a year and quite like its rendering and sharpness, but I don't really use it much, for a comparatively expensive 50mm lens. One of the options available to our Canon-using compatriots is to use Prakticar-branded Praktica B mount versions of...
Posted by sorted78 on 21/09/2011 - 22:54
DIY PK-mount Carl Zeiss Jena Pancolar 50/1.8
Wow :D I have had a PB mount 50mm f1.8 sat on the shelf for months - a kind forum user donated a pk mount for me which I have attached to the lens but as stated above without inifinty focus. My plan has been to reduce the pk mount my the required millimeter or so in effect grinding more off t...
Posted by Stuey on 22/09/2011 - 12:39
DIY PK-mount Carl Zeiss Jena Pancolar 50/1.8
then plaster and decorate the dining room then the same with my sons room then the lens gets it sometime near Chrsitmas (which Christmas I will not state) Sounds familiar - I can recommend finding a good plasterer. I did a couple of rooms in our house and eventually conceded that it was less tedious...
Posted by sorted78 on 22/09/2011 - 16:16
tamron sp 300 f5,6 AD 2
I have the Tamron 300mm. f5.6 SP Adaptall lens and have been happy with it for several years when used with my Pentax ist DS digital camera. My first copy was stolen and its replacement performed just as well, often being used at full aperture and sharp to the edges.(Do not confuse this lens with an...
Posted by copernicus on 24/09/2011 - 16:14
tamron sp 300 f5,6 AD 2
From adaptall-2.org: Tamron SP 300mm F/5.6 Model 54B: A very good fixed focal length lens with excellent macro capabilities. Lens continuously focuses from infinity to 1:3.3 macro and features a built-in lens hood. Most importantly, this lens features a special "spherical aberration compensator gro...
Posted by beachboy2 on 26/09/2011 - 10:11
Takumar 200mm f5.6 & SMC Takumar 135mm f3.5
The 200 being a preset lens? Funnily enough I had mine on the K-5 yesterday. Presets rock in Av unlike everything up to and including M lenses. It is very slim thanks to the 5.6. Saw someonesay this would hav been the alpine ramble lens of choice way back then :) Image quality is fine. Feel is love...
Posted by Transit on 23/09/2011 - 21:55
Takumar 200mm f5.6 & SMC Takumar 135mm f3.5
Here it is wide open. It has a bucket load of iris blades so stopped down bokeh is very smooth too. The focus confirm hexagon seems to be quite accurate. The main shortcoming is the long closest focus distance. I have a permanent hard hood on it. 1/3200 f5.6 iso 500 K-5 Av with no compensation ...
Posted by Transit on 29/09/2011 - 05:44
Takumar 200mm f5.6 & SMC Takumar 135mm f3.5
The best way I can explain it there are two rings on the lens, one for setting the aperture, the other to open it up to focus then it is closed for the shot.
Posted by montyaus on 29/09/2011 - 15:20
Takumar 200mm f5.6 & SMC Takumar 135mm f3.5
Quote from Pentaxforums.com. There should be two aperture rings. One is used to "preset" the aperture, the other one is used to actually stop the lens down to that aperture. In use, you would set the aperture ring to the shooting aperture (lets say f8), which, with old viewfinders, could make ...
Posted by Eagle12 on 29/09/2011 - 15:32
Takumar 200mm f5.6 & SMC Takumar 135mm f3.5
Quote from Pentaxforums.com. There should be two aperture rings. One is used to "preset" the aperture, the other one is used to actually stop the lens down to that aperture. In use, you would set the aperture ring to the shooting aperture (lets say f8), which, with old viewfinders, could make ...
Posted by montyaus on 29/09/2011 - 15:50
Light-weight 24-80-ish lens for K-5?
Sorry it is the SMC (proper) version. It only has the name on the focus window. The inferior version has Pentax-F on the lens barrel. The edge performance on the graphs was almost Exc. at f/8 That was better than the F 28mm f/2.8 and the F 50mm f/1.4 The F 35-70mm scored very similar to the 2...
Posted by Algernon on 25/09/2011 - 15:39
Light-weight 24-80-ish lens for K-5?
Never used any of the Sigma's but they are probably reasonable/good quality. Probably Sigma's biggest sellers. Earlier models like the Synchro II 28-70mm manual focus got good reviews.
Posted by Algernon on 25/09/2011 - 18:58
