Search results for 'back focus' - page 671
Pentax A or F 28mm F2.8 versus Pentax DA 18-55mm
Here are crops from three 6MP jpegs of a page from the Daily Torygraph photographed with an *ist DS on a tripod, with three different lenses. No post-processing except for rotation. Flourescent room light. All at 28mm, F4. Several focusing attempts made for each, best selected (though I'm stil...
Posted by ChrisA on 05/06/2007 - 10:14
Pentax A or F 28mm F2.8 versus Pentax DA 18-55mm
positioned in a plane at right angles to the axis of the lens. How can I make sure that is done correctly without any special equipment besides my eyeballs and an ordinary tripod? I think that for the purposes of this sort of test, eyeballs and tripod will work fine. You'll soon see if the left and...
Posted by ChrisA on 05/06/2007 - 14:53
cheap lens clearout
I've somehow managed to accumulate a bunch of cheap lenses. all working well but surplus to requirements. so I thought I'd give you guys first shot at them before I bother with ebay. Nothing here is worth much over £20 but all of it usable. all lenses have front caps, I don't have quite enoug...
Posted by thomastherhymer on 27/05/2007 - 00:32
SMC p Pentax A 400mm f5.6
Sorry to say that the lens has gone already :lol: to another forum member, I'll let he/she announce the purchase. Well now that I've had Brian's lens for a few days, I thought I'd 'fess up to being the purchaser. So far I'm absolutely delighted with it, and I must pay tribute to Brian for a very s...
Posted by ChrisA on 08/06/2007 - 16:27
Selling lenses
here is what I do, if others have better suggestions then I'm open to them (like you I always want to describe my items fairly) open up the aperture and closely inspect the lens elements from both ends of the lens, holding it up to some sort of light source will help you to determine if there is ...
Posted by Mongoose on 29/05/2007 - 14:36
Backwards Compatibility
I've had no problems using newer lenses on k1ooo's, super programs, etc. as long as the lens has a focus ring and an aperture ring on it, it'll behave like a manual lens. (I've in school, this year used my 28-200, 28-70, 400mm, on older bodies with no probs.)
Posted by Don on 30/05/2007 - 19:24
Pentax DA 50-200 query
Hi Stevo, I've got one of these and the answers are 1) no 2) ~2 inches on zooming to 200mm and a further 3/4 Inch on focusing to 1.1m (minimum focus I don't have a measuring device to hand so those are rough, but the lens slightly less than doubles in length when fully zoomed and at close ...
Posted by Mongoose on 30/05/2007 - 22:15
Sigma 70-200mm f/2.8
Hey thanks for all the replies. Just to complicate things further... I just got a call from the shop where I was trying to buy the Sigma on part exchange. Sigma say they don't make the new version in Pentax, as we thought, but also that if they do it may not be for several months (so July looks very...
Posted by ZaphodB on 01/06/2007 - 10:16
Sigma 70-200mm f/2.8
Thanks for the suggestions; you all seem pretty happy with the Pentax 50-200... is it really that good even wide-open? I've been using a Tamron 70-300 which is ok but really needs to be stopped down to f/8. Prior to that I had a manual focus Kiron-made Vivitar which was ok but again needed to be sto...
Posted by ZaphodB on 01/06/2007 - 12:48
Sigma 70-200mm f/2.8
If you can stretch to an F4 lens....why not go for the Sigma EX 100-300 DG.... or do you want wider than 100mm? I want to have my cake and eat it, and have ice cream and coffee too :D basically I'm looking for a good all-purpose telephoto; something good for portraits and landscapes but also a bit ...
Posted by ZaphodB on 01/06/2007 - 14:06
Sigma 70-200mm f/2.8
Just heard back - my camera-guy says Sigma Canada has (IN STOCK) the 70 - 200 f2.8 EX DG for $1299. DG is full 35mm image size but optimized for Digital (FAJ - no aperture ring, so might not work on older film bodies)... EX lenses are supposed to be their premium line... I have the 28-80 f2.8 EX ...
Posted by Classvino on 04/06/2007 - 16:20
Sigma 70-200mm f/2.8
Just heard back - my camera-guy says Sigma Canada has (IN STOCK) the 70 - 200 f2.8 EX DG for $1299. DG is full 35mm image size but optimized for Digital (FAJ - no aperture ring, so might not work on older film bodies)... EX lenses are supposed to be their premium line... I have the 28-80 f2.8 EX ...
Posted by McBrian on 04/06/2007 - 17:49
Sigma 70-200mm f/2.8
If you wanted my old, manual focus, non-A Tokina 80-200 f/2.8, make me an offer! I decided that as I left it out of the bag so much to save my back, I would get a 50-200 that I might actually use. Depends whether you want a fast, autofocus lens, or just a fast one... :roll: Dan
Posted by Daniel Bridge on 04/06/2007 - 23:18
Sigma 70-200mm f/2.8
Thanks for the offer Daniel. Normally I'm happy using manual focus, but it's not so practical with a long zoom considering some of the purposes I'd be using it for. Also I'm hoping to find something new because I part-exchanged a number of items for a price at least as good as I'd have got on eBay. ...
Posted by ZaphodB on 05/06/2007 - 00:04
Sigma 70-200mm f/2.8
Yeah it's not the end of the world, but it is disappointing - I just bought an *ist 35mm, since none of my auto or manual focus film bodies will work without an aperture ring. Didn't really have much choice if Sigma and other companies decide not to support the older bodies. But I really do think it...
Posted by ZaphodB on 05/06/2007 - 17:21
FA-50 1.4
Please note that I'm not one to believe something must be good just because it cost a lot of money or because Photozone say it's good. I'm having doubts about the 16-45 I've just aquired. Will sell it if I think it's hardly any better than the 18-55 (which is what I'm finding so far). If you're just...
Posted by MattMatic on 01/06/2007 - 15:57
FA-50 1.4
It is a shame that there isn't anything faster than the DA 21 2.8 and nothing on the roadmap either. Still 2.8 isn't that bad, although for low light it makes a huge difference just being able to go to 1.8 or 1.7. Next lens will probably be the FA50 1.4, although I still really want the * lenses ...
Posted by Tyr on 02/06/2007 - 11:37
FA-50 1.4
Isn't the 21mm f/3.2? Not a huge difference of course but still a bit slower. I've been trying to track down a 24mm f/2 or f/2.8 for a while. 28mm isn't quite wide enough. To be honest I expect the new 16-50 would be ideal for moderately wide shots on the digital but I'm still hoping for something t...
Posted by ZaphodB on 02/06/2007 - 13:43
FA-50 1.4
Please note that I'm not one to believe something must be good just because it cost a lot of money or because Photozone say it's good. I'm having doubts about the 16-45 I've just aquired. Will sell it if I think it's hardly any better than the 18-55 (which is what I'm finding so far). If you're just...
Posted by Pwynnej on 23/07/2007 - 17:46
EXTENSION TUBES
You might have to be quick before they go out of business :) and you might want to pre order. My experience with Jessops recently that if you want anything that is remotely unusual then you will have to wait 28 days for it. This appears to be the case for anything in Pentax fit. Having said that you...
Posted by bottesini2007 on 09/06/2007 - 21:01
