Search results for 'back focus' - page 647
Bellows question
I have no knowledge of the predecessor of the bellows M which you have referred to as bellows K, but there was a bellows III which was a simplified version of bellows M. The latter had a twin cable release which operated the camera shutter and the bellows mounted lens stop down at the same time. The...
Posted by malcolmk on 20/02/2006 - 15:21
Bellows question
[quote="malcolmk"]I have no idea if it will fit the later DSLRs. quote] I haven't actually tried fitting my bellows to my istD, but I did fit it to my istDS some time back and I think I had to take the bellows to body mount off of the bellows first , then reassemble the bellows after f...
Posted by Mannesty on 20/02/2006 - 17:41
Bellows question
Exellent lens but they are quite pricey to acquire at the moment. The decent ones (according to the descriptions) go for around the £100.00 mark, some as much as £150. I bought my SMC-F for not much more than that. This one caught my eye http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=7...
Posted by Mannesty on 20/02/2006 - 18:26
New toy to try out on my DS
Sadly the lens is going back for a refund... One of the internal elements looks like it is sandblasted.... very strange, got no idea what it is.
Posted by golfdiesel on 23/02/2006 - 16:00
Pentax 67 35mm fisheye
Personally I would advise against trying to dismantle lenses. These are precision optics and putting them back together accurately may not be possible without the correct tools and calibration equipment. If the pictures are OK then why not leave it at that. The cost of having the element replaced...
Posted by johnriley on 22/02/2006 - 23:18
IST DL Mirror Lenses
The thing i found amazing was even though the lens has long (ish) focal length, i can still hand hold it when taking pics because of it's small size, although the focusing is quite tricky i found, it's a very fine line between in and out of focus. It is a heavy lens, but perfectly usable, i took ...
Posted by Maver on 11/03/2006 - 17:25
IST DL Mirror Lenses
Hi Kimbo, I bought the FA100-300 a little while ago, and it is a beautiful lens. If you get one, go into the menu on the DL and change the autofocus setting so it uses the OK button to focus rather than the shutter release. That way you won't be hunting on each shot. Just focus again if need b...
Posted by LiamD on 18/03/2006 - 11:00
IST DL Mirror Lenses
What I've found so far is that the Tokina mirror lens is capable of good results as long as your accurate with the focus, something not as easy on my DS as it is on my Z1p (because the Z1p viewfinder is much, much better than the DS one). That makes moving targets very hard work, however with static...
Posted by niblue on 26/04/2006 - 10:26
IST DL Mirror Lenses
Just been out in the garden and took a few more shots with the Tokina, to give some idea of its versatility: It's close focus capabilities are quite impressive, however it's difficult to focus accurately as the DOF is very small when the subject is that close. Regards Steve
Posted by niblue on 29/04/2006 - 13:16
IST DL Mirror Lenses
Yes I noticed how difficult it is to focus very close-up. the secret then is to take the picture so the bird or subject is sideways to the lens, then the whole bird or whatever is sharp. I can hardly wait for the sun to come out and for it to stop raining!!!!! You have done this with the first ph...
Posted by SPB on 29/04/2006 - 13:37
IST DL Mirror Lenses
SPB: On my first outing with the mirror lens I also took some shots of a swan and they were very similar to the one you posted up. Most of the well composed ones I took that day were a tad out of focus though (one would have been a cracker as it had water dripping from the beak after the bird had br...
Posted by niblue on 01/05/2006 - 09:49
IST DL Mirror Lenses
i've got the Tamron 500 - had it on an olympus OM10 many years ago. got a pentax mount on ebay and away i went. it's a great lens... when you get it in focus! the focus band is very narrow, even at a distance, but i always loved the texture of the lens and it's been great to be able to use it a...
Posted by laurencea on 29/07/2008 - 22:42
Sluggish aperture
Hi Drew, you don't say where you bought it. If from a reputable dealer, take it straight back and explain the problem. If from ebay or similar check the exact wording of the ad, making sure that it doesn't say "sold as seen" or similar. If it doesn't, and they have a return/complaint...
Posted by LiamD on 01/03/2006 - 07:07
Opteka lenses
Hi, I've never used one, and would hardly be qualified to comment on anything really.. :oops: but if you have a longish prime, say a 300, then that equates to a FOV of a 450 35mm lens. Stick either one or two 2x converters on it and you have either a 900 or 1800 lens. I think you lose two ...
Posted by LiamD on 03/03/2006 - 17:51
Cheap long lens suggestion
Those looking for a good but cheap(ish) long lens might consider buying a second-hand Novoflex. Before auto-focus, these were the preferred lenses for nature photography. They come attached to a pistol grip, and can be fitted with a stock like a rifle (but much lighter). The Germans were very k...
Posted by George Lazarette on 03/03/2006 - 19:06
Sigma 24-135mm F2.8-4.5 IF Aspherical
JR said: There are definitely different levels of expectation from different levels of cost. I remember a situation in the Mental hospital where one of our patients, got started on some new meds, and the patients Mother started reporting back dramatic improvements within a couple days. This teenage...
Posted by Don on 01/04/2006 - 17:05
Sigma 24-135mm F2.8-4.5 IF Aspherical
8) i have tried a Pentax SMC 28-135mm f4 the lens is class crystal clear (but maual focus) worth the brass if you can find one
Posted by ali studio one on 10/04/2006 - 19:26
Porst 55mm F1.2
Anyone know anything about these lenses (a web search pulled back a few images but not much else)? It just bought one via Ebay (it wasn't expensive) as I thought it might be a fun portrait lens but I'd be interested to hear from anyone that has used one.
Posted by niblue on 06/03/2006 - 10:35
Porst 55mm F1.2
The lens has arrived and for what I paid I'm initially quite satisfied with it. The build quality isn't the best and the focus is a little notchy, but the colour rendition seems good and that F1.2 maximum aperture makes manual focusing very easy.
Posted by niblue on 07/03/2006 - 22:17
Porst 55mm F1.2
Just done some quick tests (centre sharpness only) of the Porst versus both my Vivitar 55mm F2.8 macro and also an SMC-FA 50mm F1.7 Wide open the lens is better than I expected, although because of the limited depth of field you need to be very careful when focussing on the target. At F2.8 it's n...
Posted by niblue on 11/03/2006 - 18:46
