Search results for 'back focus' - page 712
Pentax DA* 300mm Prime v Sigma EX DG 100-300mm Zoom
Is anybody here able to make a direct comparison of the results of these 2 lenses ? I'm primarily interested in the Sigma's performance at 300mm. Here's what I know about the spec's: Make------Filter---------Weight---------Min. Foc--------Blades----Price (SRS) Pentax------77-----------1070g...
Posted by Mannesty on 28/05/2008 - 12:26
Pentax DA* 300mm Prime v Sigma EX DG 100-300mm Zoom
Thanks Martin, I've seen your Sigma pics, and others, and I'm impressed by what I've seen. Pentax DA* 300mm pics are plenty at the moment but not too many Sigma 100-300mm shots available so far for comparison. If the quality of the images at 300mm is similar I'd probably go for the Sigma Zoom for...
Posted by Malo1961 on 28/05/2008 - 15:00
Pentax DA* 300mm Prime v Sigma EX DG 100-300mm Zoom
Hi Mannesty, I took the liberty to do some test shots. Still very subjective, but I think you get an impression. There is one overall shot. There rest are 100% crops of the original files at different apertures. The conditions were virtually the same, very flat, but bright light. The power mas...
Posted by Malo1961 on 28/05/2008 - 19:33
Lenses to replace kit lenses?
I got back into photography about 1 year ago, after a 10 year gap (previous cameras ME Super and MX). At the time I bought the Samsung GX-10 with the 2 kit lenses as I was not sure whether I would get back into photography, and at the time the kit was £200 cheaper than the equivalent K10D kit. R...
Posted by timbo on 28/05/2008 - 19:31
Lenses to replace kit lenses?
Hi Dan Thanks for the response. I did not know that Pentax were producing a 17-70. I already have an old A series manual focus 50 1.4, would that still be reasonable quality given that it is on an APS-C sensor camera, and I don't mind focussing? Tim
Posted by timbo on 28/05/2008 - 20:04
Lenses to replace kit lenses?
I already have an old A series manual focus 50 1.4, would that still be reasonable quality given that it is on an APS-C sensor camera, and I don't mind focussing? Should do, my FA50 is gorgeous. :wink: Dan
Posted by Daniel Bridge on 28/05/2008 - 20:49
Pentax 300mm K mount.
I have finally decided on which macro lens to keep and now I can put the rest of them up on Ebay to raise some cash for a 300mm. There is no way I can stretch to the newer AF lenses at present and to be honest I am quite happy using manual focus anyway. Was just wondering if anyone has any exper...
Posted by Mike-P on 29/05/2008 - 19:03
Pentax 300mm K mount.
Given that it's hardly been used and also stored in a leather case for a long period, I would check it carefully for fungus when you get it... Good price, BTW :) R I sold mine, bought new in 1982, for 70.00 pounds to a dealer, so 250 seems quite a lot. The lens is big, and quite slow to foc...
Posted by George Lazarette on 02/06/2008 - 00:08
Focus Ring
I have a Tamron 90mm Macro lens that I bought off Ebay a few weeks ago and am getting fairly good results with it now (IMO). It has the "A" setting (using a Adaptall 2 pka mount) and is the previous version to the AF model. My problem is that the focus ring is loose and not at all as st...
Posted by Mike-P on 01/06/2008 - 09:38
Focus Ring
I've never tried taking that particular lens apart but I have taken quite a few other lenses apart over the years and find the word "easy" is something I'd rarely associate with the task. I wouldn't want to discourage anyone from a bit of DIY maintainence (if you're the sort of person w...
Posted by hefty1 on 01/06/2008 - 23:44
Focus Ring
Ok, thanks for the info. :shock: Second question then, can anyone recommend a shop that will service the lens for me :lol:
Posted by Mike-P on 02/06/2008 - 10:26
Focus Ring
Everyone has their personal preferences, but I have that lens and I agree that it is, not loose as such, but very light to focus. I find it's really useful for rapidly refocusing when hot on the trail of a bee. In fact, I'd say the Tamron has the sweetest action of any of the 15 lenses I've owned (i...
Posted by arto on 02/06/2008 - 18:33
Focus Ring
Everyone has their personal preferences, but I have that lens and I agree that it is, not loose as such, but very light to focus. I find it's really useful for rapidly refocusing when hot on the trail of a bee. In fact, I'd say the Tamron has the sweetest action of any of the 15 lenses I've owned (i...
Posted by Mike-P on 19/06/2008 - 23:04
Focus Ring
Bet you're glad you didn't try taking it apart now then... :wink: :lol:
Posted by hefty1 on 19/06/2008 - 23:11
Focus Ring
Bet you're glad you didn't try taking it apart now then... :wink: :lol: Indeed. Now another question, I have this Vivitar 100mm macro lens and the focus action is much too stiff .. how do I go about ..... :D
Posted by Mike-P on 20/06/2008 - 07:08
Good all range lens
Ideally I would want something with 28-300 range. However that is just an ideal. 50mm on the short end is a bit tight. But even a 35-135mm would be quite versatile for what I need. Point is I need a camera that offers me 'something' on the wide end and 'something' on the telephot. Reason I need i...
Posted by iceblinker on 01/06/2008 - 21:30
Sigma 10-20 - Dodgy Ebay -
Hi, Many 'signed for' services are ONLY signed for on arrival and are therefore not tracked at all, which is why they only show up after being delivered (and signed for). In other words, they are quite literally what they say...signed for, but NOT tracked. I would also point out that many serv...
Posted by bretbysteve on 03/06/2008 - 11:08
new 55-300mm whats the verdict
I don't have a Tamron 70-300 to compare to, but my Dad's new 55-300 blows my Pentax FA 80-320 out of the water. There is absolutely no comparison between them at any aperture. The DA is both sharper and has less CA. The 55-300 is slightly, and I mean slightly, less sharp than my Tamron 300mm F2....
Posted by Mongoose on 03/06/2008 - 12:38
Autofocus with 1.4x converter
I am pondering over buying the Pentax 50-135mm/2.8 and the announced and very soon to be released Sigma 50-150mm/2.8 for my GX-10. There appears to be little difference in IQ, especially in normal usage rather than lab conditions. I have a Sigma 1.4xTC. As the Sigma only has HSM(SDM) focussing o...
Posted by timbo on 02/06/2008 - 12:49
Autofocus with 1.4x converter
I have a Sigma 1.4xTC. As the Sigma only has HSM(SDM) focussing only (no screw) and the TC does not support this then I assume I will only have manual focus if using the lens with a TC? I have the 50-135 and the Sigma 1.4X TC - you don't need to worry about Auto- or Manual focus issues with this pai...
Posted by Classvino on 06/06/2008 - 16:59
