Search results for 'back focus' - page 967
Measuring before Adjustment
All points noted (not yet understood-but noted) I used the large triangle to indicate the centre and focused with the selector set to point when the camera beeped with the small red square in the viewfinder on the centre line I fired the shutter. Is that the right thing to do? The camera was ...
Posted by Frogherder on 23/05/2011 - 15:11
Measuring before Adjustment
Ok - Downloaded Focus Test chart and redone experiment I placed it further in the workshop to avooid the backlighting. Lighting on all is from a skylight. Looks OK to me so I don't think I'll be fiddling in debug mode (incidentally page 4 of the blog doesn't say " MODSET.TXT" it use...
Posted by Frogherder on 23/05/2011 - 16:52
Measuring before Adjustment
All points noted (not yet understood-but noted) I used the large triangle to indicate the centre and focused with the selector set to point when the camera beeped with the small red square in the viewfinder on the centre line I fired the shutter. Is that the right thing to do? The camera was ...
Posted by WobblyGoblin on 23/05/2011 - 16:57
Measuring before Adjustment
AP has a free focus checker next week.
Posted by johnriley on 23/05/2011 - 19:36
Measuring before Adjustment
Ok - Downloaded Focus Test chart and redone experiment Looks OK to me so I don't think I'll be fiddling in debug mode Looks good to me as well. Now, if you look at the pic that you posted, you will see that your test chart is not quite square to the camera. Look carefully, and the LH side is goi...
Posted by DoctorJeff on 23/05/2011 - 20:25
Measuring before Adjustment
This guy has a good article about focus adjustment and explains the details much better than I can. http://pentaxdslrs.blogspot.com/2008/05/af-adjustment-test-chart-specifically.html Interesting that, even though the article is 3 years old and on his own blog, he failed to answer a criticism i...
Posted by Frogfish on 23/05/2011 - 21:49
Any thoughts/experiences with the DA 50-200mm (non WR)?
Thanks guys I'll test in thoroughly in store tomorrow, before headin to the gary Neville testimonial game. If I get it I'll post some images :) I'm seated quite far back though :(
Posted by vincechu on 24/05/2011 - 02:13
Sigma 70-200mm F2.8 EX DG HSM II
(there are 3 versions of this lens length of course - EX DG, HSM II and OS HSM) More than 3 :D 70-200mm APO 70-200mm APO DG 70-200mm Macro 70-200mm HSM Macro 70-200mm HSM II 70-200mm OS HSM I have the original and (IMO) the sharpest of the bunch, Remember that the ones with HSM will...
Posted by Offertonhatter on 23/05/2011 - 20:36
Sigma 70-200mm F2.8 EX DG HSM II
A slightly odd question about these lenses: Would they also work with something like a Super A? I know they're full frame and lack aperture rings, but assuming the aperture mechanism is the same as that on the DA-L lenses then the Super A would be able to set aperture by using shutter priority mo...
Posted by Dangermouse on 27/05/2011 - 22:39
Sigma 70-200mm F2.8 EX DG HSM II
That is indeed my current plan, if SRS sell out of the reduced Sigma 70-200mm lenses (I can just about scrape £600 together, £999 is right out!) I think I'd rather have HSM to be honest, as I'm justifying the slightly eyewatering price with the fact that it should last longer than the K-m and so...
Posted by Dangermouse on 28/05/2011 - 08:27
Sigma 70-200mm F2.8 EX DG HSM II
I'm hoping to get any 70-200 f2.8 lens; for sports, people etc shots. What are the alternatives, preferably cheaper alternatives but it must have auto focus? I know there's a f4 lens with roughly same reach. Any other contenders. I'll still probably go for the f2.8 lens as it's obviously the b...
Posted by dinneenp on 02/06/2011 - 12:17
Sigma 70-200mm F2.8 EX DG HSM II
I'm hoping to get any 70-200 f2.8 lens; for sports, people etc shots. What are the alternatives, preferably cheaper alternatives but it must have auto focus? I know there's a f4 lens with roughly same reach. Any other contenders. I'll still probably go for the f2.8 lens as it's obviously the b...
Posted by mille19 on 02/06/2011 - 14:55
Sigma 70-200mm F2.8 EX DG HSM II
sorry, I should have mentioned it has to be very fast... I don't think you're going to get very fast for not much cash, sadly. The Tamron should still be pretty rapid to focus. I always suspect that AF speed has more to do with the maximum aperture than anything else, and the image quality looke...
Posted by Dangermouse on 02/06/2011 - 15:46
Sigma 70-200mm F2.8 EX DG HSM II
I'm hoping to get any 70-200 f2.8 lens; for sports, people etc shots. What are the alternatives, preferably cheaper alternatives but it must have auto focus? I know there's a f4 lens with roughly same reach. Any other contenders. I'll still probably go for the f2.8 lens as it's obviously the b...
Posted by dinneenp on 02/06/2011 - 16:27
Sigma 70-200mm F2.8 EX DG HSM II
Hello There is a zillion tests and shootouts of this sigma, also compared to other similar devices online. I read way to many of them. I got sigma because i got it really cheap, new. Only shoot few test shots with tamron. Sigma is focusing much faster then *50-135. Not sure for tamron. Used it ...
Posted by jane7l on 03/06/2011 - 13:48
55-300 or 50-200mm?
Having said that ...55 - 300 DAL is rather a noisey lens, when focusing (i have have to manual focus, When birding) ..does tend to hunt a little..
Posted by stub on 24/05/2011 - 21:44
Tamron AF 70-300mm VC USD - Poll
The 55-300 is excellent optically - but having used a Nikkor 70-300 AF-s for the past couple of years, it really struggles with action in comparison. Agree here. Whilst optically amazing value for money the AF on the 55-300 is a dog. If Tamron could make a virtual equivalent of the Nikkor 70-300 ...
Posted by Frogfish on 17/06/2011 - 07:31
Tamron AF 70-300mm VC USD - Poll
Whilst optically amazing value for money the AF on the 55-300 is a dog. If Tamron could make a virtual equivalent of the Nikkor 70-300 AF-s for Pentax then that would become my back-up long lense (to the DA*300) or for greater flexibility and weight saving. Same here it would find itself alongside...
Posted by johnwhit on 17/06/2011 - 08:30
Tamron AF 70-300mm VC USD - Poll
Oh, are we back to this? :lol: I was thinking about buying one of these actually.
Posted by Mike-P on 04/12/2011 - 19:47
Tamron AF 70-300mm VC USD - Poll
Oh, are we back to this? :lol: I was thinking about buying one of these actually. For the Canon Mike, of course:lol: Apparently the Canon L series manages a little better optically for c. £1100:shock: John
Posted by johnwhit on 05/12/2011 - 06:59
