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fixed focus lens - Topic profile
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Latest threads on fixed focus lens:
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Started 2 months ago (2008-08-13 08:04:20)
by henryhscheng
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Started 6 hours, 26 minutes ago (2008-10-15 12:14:00)
by ignutzz
Quote: Originally Posted by j00sten I agree. It does look like the lens is front focusing quite a bit. Being that the "error" is consistent is a good thing as it can be fixed. Your best bet would be to send the lens and maybe even the camera to get the focus set. The 50 f/1.8 can be a tad soft wide open, and a slow shutter speed ... |
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Started 8 hours, 25 minutes ago (2008-10-15 10:14:39)
by Ingemar Ragnemalm
Guy Parsons wrote: > > Ingemar Ragnemalm wrote: > > > > > Do I have myself to blame, buying a poor model, or is this particular > > camera faulty? Or do I miss something obvious? Focusing mode? > > Anything? > > The R3 is usually at least a little bit better than the R4 for > results. No known focus problems. > > Put the camera in Multi AF focus mode and then by ... |
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Started 9 hours, 25 minutes ago (2008-10-15 09:14:44)
by Ben_Egbert
J A K wrote: > > Ben_Egbert wrote: > > I am surprised you don't need any lens correction for AF. Most have > > some great lenses, so far I have never owned a lens that did not > > require correction on any camera. > > I'm not the only one with zero error in the bag, there was another > poster that recently reported zero MA correction; he had about seven > (if I remember ... |
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Started 11 hours, 17 minutes ago (2008-10-15 07:22:55)
by crobinso_canada
It doesn't have a true ring USM and is very fragile. Mine broke and was fixed for $170 and not the focus is stiff again. It's only a matter of time before it doesn't work again. After more than 20 years, this is the lens to replace and yet Canon never does. It's strange that they always show this lens with their advertising on every camera, yet they never replace it. Great lens when it ... |
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Started 12 hours, 8 minutes ago (2008-10-15 06:31:49)
by kim zhou
Hi all, I've recently had a focusing problem with my out-of-warranty 10-22mm, which i managed to fix myself. I'm writing it up to see if anyone has experienced similar problems and hopefully help someone fix theirs without spending $100+ with canon! Anyway, my 10-22mm had been in storage for about 6mth. yesterday when i put it on my recently purchased 450d, shock horror! autofocus was ... |
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Started 14 hours, 24 minutes ago (2008-10-15 04:15:21)
by Aaron400d
One possibility is using a close up lens (around $120). If you want to do dedicated 1:1 macro and also a sharp, shallow DOF, short tele portrait lens more often, then I use a EFS 60 f2.8. However.... On a hike I did this past summer, keeping weight down was a issue for that particular trip. Instead of the bulk and weight of a XSi with 60 macro, 17-55IS, 70-300IS, etc. I opted for the ... |
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Started 15 hours, 41 minutes ago (2008-10-15 02:58:33)
by Daniella
nothsafoto wrote: > I had a similar experience but with Sigma. I bought a Sigma 150mm > Macro lens earlier this year and first time I took it out to use I > noticed that the Mount ring on the rear was loose. Sent it into > Sigma and got a reply that I'd have to pay £hundreds to get it fixed > as I must have dropped it badly. don't you hate it when they say this and you ... |
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Started 16 hours, 15 minutes ago (2008-10-15 02:24:42)
by jfriend00
How much aperture they want to go for at the short end is just one of the design parameters. While they technically have enough entrance pupil for a much larger aperture at the short end of the zoom, that would challenge the optical design much more than it is today. So, they choose to make the optical design at the short end a lot easier by only really using the center of the lenses (not ... |
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Started 17 hours, 32 minutes ago (2008-10-15 01:07:47)
by SteveL54
Kerry Pierce wrote: > > 2) Does Nikon AF get a boost with faster aperture lenses (f2.8 or > > more) the way some mid-level and higher Canon bodies do? > > No, not as I understand the canon functionality with its enhanced > center point. Of course, any camera can focus better in low light, > with an f/2.8 lens than it can with an f/5.6 lens, so in that regard, > yes, nikon's AF... |
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Hot threads on fixed focus lens:
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Started 4 days, 5 hours ago (2008-10-11 13:20:00)
by David Rasnake
We've known that Syntax-Brillian, US-based holder of the Vivitar camera and accessory name, has been in a dire financial position after their Chapter 11 filing in July. The latest word on Syntax-Brillian and the once well-regarded Vivitar brand came this week, with the announcement that Vivitar's UK assets would be auctioned off, and that consumer products conglomerate Sakar International ... |
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Started 6 days, 18 hours ago (2008-10-09 00:18:27)
by JeeHaa
Just got my Z300. Until recently I also had a Casio Z850 (my long-time favorite) and a Panasonic FX35, I previously also tried (and returned) a Z200 and Z1080. A short summary of my opinion after a few days. Unfortunately I do not have time to post full-size samples. My first impression is... not too impressed! I really, really hoped this cam would be the ultimate replacement for my Z850, but ... |
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Started 6 days ago (2008-10-09 17:45:40)
by iso rivolta
So why external AF sensors have disappeared from prosumer compacts ? Probably one cause is that film compacts that used these devices are not anymore manufactured, so the parts manufacturer has stopped production. Another cause is that the external AF sensor can only be used for center focus or a few points around center, while newer digital compacts offer more and more contrast detect points ... |
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Started 2 days, 23 hours ago (2008-10-12 18:45:39)
by widarge burt
macman4942 wrote: > Hi, I love the lens design. How did you come up with it? while photkina i folowed the reports and again stumbled over the "lensbaby" to expensive for what it is made of :-) i have a little collection of old lenses, most useless nowadays. at first i used zhe bodycap of my D40 and fixed it to the m42 thre | |
