Search results for 'back focus' - page 1247
£100 Cash Back for Ist DS+ 18-55
Dunno about the 67, but the 645 is going digital http://www.pentax.co.jp/english/news/2005/i0507.html
Posted by Mannesty on 07/04/2005 - 15:46
Extension rings with Digital Pentax.
Yes, I've used Pentax auto extension tubes on the *ist-D. However, you have to do things manually (of course). Open the lens wide, focus and frame, stop down and meter. (You also have to enable the custom function that lets the shutter fire when the lens is not in the A position ;) ) Had some pret...
Posted by MattMatic on 13/04/2005 - 22:35
Extension rings with Digital Pentax.
Hi, I think this is the reason the more recent AF Macro lenses focus up to true life size. All the MF ones and the 100/3.5 only went to 1/2 life size without a tube. I guess some of us Luddites still using MF and film have the odd advantage :wink: Kim
Posted by Kim C on 13/04/2005 - 22:56
Extension rings with Digital Pentax.
Hi, I suspect that the reason Pentax have not produced electrical or AF auto tubes is that there is little or no reason for them. If you want quality, a macro lens is better. The AF lenses focus to life size without the need of tubes. Once you enter the realms of true macro work ie greater than lif...
Posted by Kim C on 14/04/2005 - 23:23
Extension rings with Digital Pentax.
Downswood, Looking back at your original question, you asked: "Would it work in Av with the lens set at max aperture?" The answer is yes (even for the Pentax tubes). However, this is probably the last thing you would want to do. Macro photography is all about capturing fine detail. This i...
Posted by George Lazarette on 16/04/2005 - 08:19
which model are the best, istd or istds???
It boils down to greater control (*ist D) versus greater speed when writing to the card (*ist DS). If you like to tell the camera what to do, you will find it easier with the D. If you often take a lot of shots in quick succession, the DS will work better for you. There are loads of other sma...
Posted by George Lazarette on 18/04/2005 - 14:57
which model are the best, istd or istds???
John, I would agree that the DS allows you to do just about anything you could want to. The difference is that access to various things is slightly easier on the D. I think I have mentioned before that continous focus is only available in Sport mode on the DS, whereas it is available in any mod...
Posted by George Lazarette on 19/04/2005 - 13:26
ist D US$709 a&mphotworld.com
AMPhotoworld have a poor reputation. I personally have bought equipment from abroad where the price justified it, but only where I was confident of the integrity of the seller. Quote: "I just placed an order for from amphotoworld.com. Again, they were the cheapest guys out there. When I got the...
Posted by George Lazarette on 24/04/2005 - 22:45
PLEASE pentax: sell a pro-level digital SLR!
I think you've hit on an important point there - give the users what they want. But what do the users want? The best quality at any price? The cheapest mega-zoom for 6 x 4 prints? Somewhere in the middle is the compromise, and although there will be some takers at both ends of the spectrum I suppose...
Posted by johnriley on 09/05/2005 - 16:10
PLEASE pentax: sell a pro-level digital SLR!
Howesbn said: "Full frame 11mp sensors will only ever come down in price, so before long Pentax won't be able to use that excuse any more. What's the point in paying through the nose for a FA Limited 31mm (I wish), only to find it becomes a very overpriced standard lens on an *istD/S ? Unt...
Posted by George Lazarette on 09/05/2005 - 17:30
PLEASE pentax: sell a pro-level digital SLR!
Full frame 11mp sensors will only ever come down in price, so before long Pentax won't be able to use that excuse any more. :roll: Ok so I looked up the prices in the US of full frame Pro DSLRs. $3k won't get you anywhere at all! Canon 1Ds mark II, full frame costs $8k. Nikon D2X, full frame cos...
Posted by MattMatic on 10/05/2005 - 07:06
PLEASE pentax: sell a pro-level digital SLR!
first i would like to make a point about people saying that pentax is a photo amateur brand. In the fashion industry there was only one camera used, the pentax 6x7. where i live a lot of photographers used pentax stuff. I use the mz-s and it has all the features i need for a pro camera and am very...
Posted by WJ Bons on 22/07/2005 - 09:27
PLEASE pentax: sell a pro-level digital SLR!
Actually, the *st D is a professional grade DSLR compared with the Nikon D70 or the Canon equivalent. The viewfinder is bright and clear, you can get different focusing screens if you want, all the important controls are really easy to get to, including DOF preview. You can even get near-insta...
Posted by Anonymous on 25/07/2005 - 03:33
PLEASE pentax: sell a pro-level digital SLR!
Actually, the *st D is a professional grade DSLR compared with the Nikon D70 or the Canon equivalent. The viewfinder is bright and clear, you can get different focusing screens if you want, all the important controls are really easy to get to, including DOF preview. You can even get near-insta...
Posted by WJ Bons on 25/07/2005 - 09:20
PLEASE pentax: sell a pro-level digital SLR!
Actually, I spent a large part of the last three decades earning my food and lodging as a photographer. I have used a couple of MX bodies with winders for 35mm work, I have never felt the need for anyghing else. I'm not a "name" who makes his living off endorsments, I make my living off making pho...
Posted by Arthur Dent on 28/07/2005 - 02:36
PLEASE pentax: sell a pro-level digital SLR!
I've not looked at the calculator, but that can't be right. However, it depends on how closely you look into the matter and does potentially become extremely complicated. For all practical purposes, there is more DOF on smaller formats, and if you think about it it has to be so. An 80mm lens has ...
Posted by johnriley on 28/07/2005 - 16:31
PLEASE pentax: sell a pro-level digital SLR!
Artykris, you enter the actual focal length (which is always 50mm for a 50mm lens, irrespective of whether it's on an APS sensor or full 35mm frame). So, you get 0.25m for 50mm/f1.4@3m on 35mm, and 0.2m for the *ist-D (using a circle of confusion value of 0.02mm). John - you are missing the "circ...
Posted by MattMatic on 28/07/2005 - 17:23
PLEASE pentax: sell a pro-level digital SLR!
This is why it's a minefield. The final print size is indeed a different degree of magnification from the original. In addition, depending on the focal length, the distance you view the print is also a factor, although this relates more to perspective. The circle of confusion will be a differ...
Posted by johnriley on 28/07/2005 - 17:45
PLEASE pentax: sell a pro-level digital SLR!
Yes indeed John. I think, to get a little back on topic, that some clarification is in order for everyone: 1. If you use a 50mm lens on a 35mm back and the same 50mm lens on an *ist-D then the *ist-D will have less depth of field because the image sensor is smaller, and to produce an 8x10 (which ...
Posted by MattMatic on 29/07/2005 - 09:32
PLEASE pentax: sell a pro-level digital SLR!
Entertaining and informative for a Friday night! You can even get near-instant histogram replay, for all those of the simian persuasion. Take your shot, hit the Replay button, hit Info, and there's your histogram! Then hit the Replay button and you're back in shooting mode. A two second proced...
Posted by spbatt on 29/07/2005 - 21:05
