Search results for 'back focus' - page 713
kiron macro repair
I have a Kiron 105mm Macro lens which I bought on ebay silly cheap 18 months or so ago. When I got it, it turned out to have a damaged focus mechanism and ended up in a box not being used. Recently my Dad and I have been playing around with it and it turns out that it totally deserves it's legendary...
Posted by Mongoose on 02/06/2008 - 23:51
Tamron 28-300mm distortion
Actually, the more I look at the pics, the less I can see wrong with them. I think the effect is just down to the way those knobbly plants look when out-of-focus.
Posted by iceblinker on 03/06/2008 - 13:52
Tamron 28-300mm distortion
did you use flash? could be the the background in motion, combined with sr to create the blocky, multi exposure effect....it seems to me that the sensor vibrates to counter motion at the point of focus, so wouldn't that impact the areas not in focus? and wouldn't the effect be more pronounced the...
Posted by Don on 03/06/2008 - 14:39
Tamron SP 300 5.6 problem
I have just purchased one of these, with a 01f t/c on the bay and having run off some test shots I am very disappointed with the results, which are very "fuzzy" and lacking in sharpness. Colour rendition and contrast seem ok. I have a Tokina RMC 300, which I was hoping to sell after buying...
Posted by shelob1 on 03/06/2008 - 10:25
Price and Advice Req'd...
The best place to check prices is Ebay. SMC PENTAX-FA 1:3.5-4.7 29-80mm SMC PENTAX-FA 1:4-5.6 70-200mm SMC PENTAX-M 1:1.4 50mm SMC PENTAX-M 1:4 200mm The zooms are very average, the primes good but plentiful so not valuable. TAKUMAR (BAYONET) 1:2.5 135mm No SMC, avoid. CENTON...
Posted by George Lazarette on 03/06/2008 - 18:58
Price and Advice Req'd...
I'm not sure if i'll use the 200 as i have the 50-200 DA unless someone advises strongly otherwise?? I won't advise you *strongly*, but the M200 should cost around the £25 mark (depending on condition) and is a whole stop faster than the 50-200 at 200mm (f4 vs f5.6). You lose the convenience of aut...
Posted by hefty1 on 03/06/2008 - 21:12
Price and Advice Req'd...
I'm not sure if i'll use the 200 as i have the 50-200 DA unless someone advises strongly otherwise?? I won't advise you *strongly*, but the M200 should cost around the £25 mark (depending on condition) and is a whole stop faster than the 50-200 at 200mm (f4 vs f5.6). You lose the convenience of aut...
Posted by George Lazarette on 04/06/2008 - 09:04
Price and Advice Req'd...
Thanks everyone. I think I will get the 50 and 200 and the tube accessories, i can probably negotiate around £40-50 for those so probably worth it? The only odd thing about the 200 is that the focus ring seems a little stiff... not sticky, its probably meant to be like that? but it does more than a...
Posted by Funksmaname on 04/06/2008 - 09:49
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
PENTAX Introduces smc PENTAX DA 17-70mm f/4 AL [IF] SDM Lens One noteworthy change compared to Pentax's pro-grade DA* lenses with SDM is the use of the KAF3 (rather than previous SDM lenses' KAF2) lens mount on the 17-70mm. The KAF3 mount is almost functionally identical to the KAF2, with ...
Posted by gubak on 04/06/2008 - 06:56
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
Heavens. That's a lot, for a non-star lens. It is, but isn't that around the same price that the DA16-45 launched at? I see this 17-70 as a replacement for that lens in the line up, and I'm sure it won't be too long before prices drop to 16-45 levels... Well, the thing it's got that the 16-45 does...
Posted by ChrisA on 04/06/2008 - 11:38
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
One noteworthy change ... is the use of the KAF3 (rather than previous SDM lenses' KAF2) lens mount on the 17-70mm. ... While users with older Pentax digital bodies may be disappointed at the loss of AF compatibility with the latest lens, the move to KAF3 spells good news for current Pentax shooters...
Posted by richard64 on 06/06/2008 - 19:32
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
Got to agree there, I really can't see how the KA3 mount is good news for anyone except the accountants. Well... and owners of anything from K10D 1.3 /100D Super onwards, assuming that reduced costs results in reduced prices. In a sense, even reduced costs without reducing prices is good indire...
Posted by ChrisA on 08/06/2008 - 00:54
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
I suspect that the original writer may have been referring to the K100D and K10D when he mentioned early K bodies? Yes, I'm sure you're right, John - rereading it, that interpretation makes much more sense. yes, I meant the K100D and K110D. It seems a little off to me to produce an SLR and then a ye...
Posted by Mongoose on 08/06/2008 - 10:35
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
It seems a little off to me to produce an SLR and then a year later declare (or at least imply) that no new lenses are going to auto focus with it. They don't. From www.infoborder.com/News/2008/June/pentax_lens.php : Q: Will PENTAX be developing SDM-only lenses from now on? A: No: Despite ...
Posted by iceblinker on 08/06/2008 - 10:49
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
yes, I meant the K100D and K110D. It seems a little off to me to produce an SLR and then a year later declare (or at least imply) that no new lenses are going to auto focus with it. Other companies have done similar things on occasion, but I never expected it of Pentax. Actually, if you check that l...
Posted by ChrisA on 08/06/2008 - 10:54
PENTAX Introduces smc DA 17-70mm f/4 AL [IF] SDM Lens
in looking at these and other threads two things stand out to me. one: Pentax is working closely with 3rd party lensmakers, the presence of redumdant "Mf" switches is one hint....as if the lens were designed with a camera (perhaps a pentax future model, but most likely a canikon) that...
Posted by Don on 08/06/2008 - 14:28
Tamron 28-75mm f2.8 Di SP AF Lens
It's one stop faster. That's all! It you actually shoot at f/2.8 because you need to, then you have to have absolutely razor sharp focus. When I use the 50mm f/1.4 and shoot at around f/2.4 I have to check and double check the focus - and my dud rate is higher too! In the DSLR world, and especia...
Posted by MattMatic on 05/06/2008 - 16:16
Tamron 28-75mm f2.8 Di SP AF Lens
There is always the idea that faster = better Matt No you are very right. I should focus on quality rather than speed. It just seems to be that quality costs a lot more than speed in some cases. The Tamron 28-75 f2.8 is nicely priced for me and fast. I hope the quality is good enough for my standa...
Posted by ericp on 05/06/2008 - 17:05
Sunagaor 500mm
might be worth a punt for £20, but I'll be very impressed if it's any good. Even if it's optically fine, these old lenses tend to be big, heavy and slow. F8 will make it a pain to focus. You will need a sturdy tripod and you wont want to be lugging it around much.
Posted by Mongoose on 05/06/2008 - 15:09
Question about Pentax SMC FA 2.8/100mm Macro
Hi folks, Just received this lens of eBay in mint condition. One question about the clamp button though. The limit button is self explaining but what exactly does the clamp button do?? Thanks in advance, Martin. (A very happy macro lens owner) :) PS, I found the answer already :oops: The c...
Posted by Malo1961 on 05/06/2008 - 19:46
