All Forum Comments
Comment by Don posted on How often do you clean your contacts? at 12/09/2010 - 18:56
Algernon wrote:
There's no point in discussing a lens that's only available in Japan
I'm certainly not emigrating
Canon have a cheap £250 ish f/2.0 and a £1,000 ish L 35mm f/1.4
If people want it, it will be released...There's no point in discussing a lens that's only available in Japan
I'm certainly not emigrating
Canon have a cheap £250 ish f/2.0 and a £1,000 ish L 35mm f/1.4
the 645d is going to be released outside Japan..
there would be little point releasing world wide if they can't meet demands.. and little point in mass producing it only to find out there is no demand...
reading this thread tells me Pentax is making a sound business decision by dipping a toe in, to check the temp, before jumping into the pool...
and I'm thinking there will be black lenses, if not colors available outside japan soon enough...
Comment by Don posted on DA-L 35mm f2.4 announced at 12/09/2010 - 18:41
Hyram wrote:
I am really not into machine gun photography and never get anywhere near filling a 4gb card, so an additional card slot would be a feature not a benefit
I could see one possible benefit...I am really not into machine gun photography and never get anywhere near filling a 4gb card, so an additional card slot would be a feature not a benefit
assuming you can shoot jpeg+raw and assign raw to one card and jpeg to a wi-fi sd card...
as an event shooter, all my jpegs could be wireless transfered to my laptop and projector/website while I'm shooting the event.... excellent for promoting myself at events...
Comment by Don posted on Possible K-5 Specs !! at 12/09/2010 - 18:33
Algernon wrote:
1. So all this fuss is over nothing
9 wasted pages on this forum alone.
2. You could buy Nikon, Sony and possibly Canon (not checked)
as separates (body + 35mm f/1.8 ) tomorrow if you wanted.
Cheap as well
3. Difference f/2.4 to f/1.7 = 2.4/1.7 = 1.412
1.414 is a FULL STOP which is half as bright
4. Nikon, Sony and possibly Canon will soon brief him as will anybody doing a review
the only Nikon lens I'm aware of that is 35mm and has vr (stabilized) is 16-35 vr and it is f4 and costs way more..1. So all this fuss is over nothing
9 wasted pages on this forum alone.
2. You could buy Nikon, Sony and possibly Canon (not checked)
as separates (body + 35mm f/1.8 ) tomorrow if you wanted.
Cheap as well
3. Difference f/2.4 to f/1.7 = 2.4/1.7 = 1.412
1.414 is a FULL STOP which is half as bright
4. Nikon, Sony and possibly Canon will soon brief him as will anybody doing a review
canon has nothing is for 35mm primes so again you're looking at slower or expensive zooms...
you got to remember to factor in image stabilized lenses when comparing anything to Pentax...
Comment by Don posted on DA-L 35mm f2.4 announced at 12/09/2010 - 18:27
I wonder if the problem lie in the fact that a weather sealed lens has an o-ring that essentially applies some force to push the lens away from the body, where non weather sealed lenses don't do that... it may just be that the contacts are more susceptible to dirt because they don't seat as firmly?
Comment by Don posted on How often do you clean your contacts? at 11/09/2010 - 19:11
Darkmunk wrote:
how about this?
yeah that one brings back memories... anybody recall that how-to video?how about this?
Comment by Don posted on light tent recommendation please at 11/09/2010 - 17:58
Mannesty wrote:
Good point about the lubrication of the seals. If they are lubed at all it would only affect the outer edge of the camera mount though, not the electrical contact area, but you could well be right.
Anybody here on good terms with somebody at Pentax ( Chris@SRS specifically ) to ask the question?
I only bring it up, because I have used wd-40 in the past to clean dirty contacts....Good point about the lubrication of the seals. If they are lubed at all it would only affect the outer edge of the camera mount though, not the electrical contact area, but you could well be right.
Anybody here on good terms with somebody at Pentax ( Chris@SRS specifically ) to ask the question?
but...
if you want to have a laugh, try logging into a motorcycle forum and ask if it's ok to lube your o-ring chain with wd-40 and sit back and laugh at the ensuing mayhem... lol!
but when it comes to grease there are some types that react badly to certain types of o-rings....
Comment by Don posted on How often do you clean your contacts? at 11/09/2010 - 17:14
Mannesty wrote:
I don't know about Pentax weather seals, too new on the market for any durability issues to be known, but with underwater housings, and carburated motorcycles, I have good knowledge that seals dry out and fail if they arent lubed, or are lubed with the wrong stuff...Don wrote:
Possible you removed some grease that was supposed to be there?
Do manufacturers apply grease to camera/lens mounts? I think it's unlikely. Why spend good money on gold plated contacts, then cover them in grease. Sorry Don, I don't buy that one.Possible you removed some grease that was supposed to be there?
Quote:
I'd think the weather seals would've kept the contacts clean......
I'd agree that the weather seals between lens and mount should prevent the ingress of atmospheric contaminants, but what about the small particles of chromium dust caused by metal to metal contact when lens changing?I'd think the weather seals would've kept the contacts clean......
usually involves some kind of grease......
it is not as far fetched as one might presume...
Comment by Don posted on How often do you clean your contacts? at 11/09/2010 - 16:24
most billboards around here were shot on medium format film and scanned, or with d-slrs and interpolation software...
and at viewing distances, you can't tell which was which....
very few outfits outside the major metropolitan cities are profitable enough to justify medium or large format digital....
for the price of the 645d, I could have my vehicle tricked out and painted with custom company graphics, and it will draw more customers than a bigger camera on my tripod would....
and at viewing distances, you can't tell which was which....
very few outfits outside the major metropolitan cities are profitable enough to justify medium or large format digital....
for the price of the 645d, I could have my vehicle tricked out and painted with custom company graphics, and it will draw more customers than a bigger camera on my tripod would....
Comment by Don posted on Medium Format 645D at 11/09/2010 - 16:12
! don't wear contacts.
Possible you removed some grease that was supposed to be there?
I'd think the weather seals would've kept the contacts clean......
Possible you removed some grease that was supposed to be there?
I'd think the weather seals would've kept the contacts clean......
Comment by Don posted on How often do you clean your contacts? at 11/09/2010 - 16:05
Many years ago a helpful person sorted out the telephone exchange with WD40 on a ship I knew. Never did work after that. Contact cleaning on my bodies and lenses is done in the Womble fashion for me too, tee, polo or whatever.
logic fail....
by your own description, the telephone exchange was already not working.... so the application of wd-40 failed to fix it..permanently.... and it did not work before or after that...
by way of comparison, I could say the fuel pump in my car failed, I sprayed wd-40 on it, and it never again worked after that... doesn't mean wd-40 wrecked the fuel pump in my car.
so...
that statement does not work as an indictment against wd-40.....
just sayin'
that is all.