Search results for 'sensor cleaning' - page 102
Sougor - 90-200mm Zoom+Macro f 4.5
What you all need is a "Big Soligor Camera Lens" :lol: or an usual two lenses in one "PENTAX K FIT SOLIGOR 85+135mm f/4 DUAL FOCAL LENS LOOK" :lol: They also did a sort of copy of the Pentax Spotmeter :lol: Some Soligor lenses were very low contrast, you had to develop the film separa...
Posted by shim on 04/03/2009 - 10:58
Sougor - 90-200mm Zoom+Macro f 4.5
What you all need is a "Big Soligor Camera Lens" :lol: Well that ebay description is as much use as a chocolate teapot. Well less actually. One could at least eat the teapot. or an usual two lenses in one "PENTAX K FIT SOLIGOR 85+135mm f/4 DUAL FOCAL LENS LOOK" :lol: Curious lens. A s...
Posted by womble on 04/03/2009 - 22:37
Pentax 18-55mm Lens how to tell what version
Original version looks like . Mk II version looks like . There is very little difference between them except that the resolution of the MkII is supposed to be as good as the K20D sensor.
Posted by Mannesty on 04/03/2009 - 09:05
Lenses and fiels of view on dslr
ok slowly but sureley learing a lot of helpful and useful information from the forum and its users however as i am buying a lens and after reading this Due to the difference in size between the K10D's sensor and 35 mm film there is a 1.5X focal length conversion, so the 18 - 55 mm lens that come...
Posted by foxycce on 04/03/2009 - 20:59
Lenses and fiels of view on dslr
Yes, because of the sensor size every lens is affected this way, which is why modern, made for digital, lenses sometimes come in unusual focal lengths.
Posted by Gwyn on 04/03/2009 - 21:03
Bothered abouts lens etc
Btw, is there such a thing as a good all round lens? Yes. basically the lens that is supplied with the camera. In Ancient Times this was the 50mm lens, which was excellent quality and useable and abuseable for a large variety of subjects. Then it became the 35-70mm zoom and later the 28-80mm zoom...
Posted by foxycce on 08/03/2009 - 00:48
Bothered abouts lens etc
I've no idea what you mean with your last post but the ones sizes are based on fullframe cameras so you need to crop it with every lens, make for digital or not. The only thing that truly change is the angle of view everything else stays the same (focal lenght, dof, etc.) regardless of what kind ...
Posted by Anvh on 08/03/2009 - 02:30
Bothered abouts lens etc
ok then When I look through my view fider(eye peace) do I see the image that is full frame image(i.e. crop factor needs to be applied on it) or it will be the exact image that my DSLR sensor will imprint(i.e. a crop factor is already applied on it)” ?
Posted by foxycce on 08/03/2009 - 22:58
Bothered abouts lens etc
The image through the viewfinder is what you will get on the sensor. It's actually a tiny weeny bit smaller, but that's for another reason. Othwerwise there is no cropping when using a lens designed for digital on your digital camera. The image from a lens designed for film will be cropped by the...
Posted by iceblinker on 08/03/2009 - 23:26
Bothered abouts lens etc
you see through the viewfinder how it would be on the sensor/film. that's only half true though because you see 98%ofthe sensor, that is because if you want to have a 100% viewfinder it needs to be so precise that the price will be much more.
Posted by Anvh on 08/03/2009 - 23:26
Bothered abouts lens etc
I find "35mm equivalent" values useful when I'm trying to decide what compact camera to buy. There are so many different compact sensor sizes that otherwise I wouldn't have a clue what the lens focal length does what on those things. It's certainly proving terribly confusing for newcomers to dSLR...
Posted by iceblinker on 09/03/2009 - 00:55
Pentax 18-55mm lens Mark 1 and 2
Yes, the Mk I version did not have sufficent resolution to make the most of the new sensor.
Posted by johnriley on 07/03/2009 - 19:22
Which m42 screw thread lens??
I haven't seen any that you would call a dog, These Taks were right up there in thier day and were built to a very high standard. What I have found is that the Coated versions are more susceptible to fungus, I don't know if I am just unlucky, but a lot of the coated models I have seen have fungu...
Posted by Clarky on 10/03/2009 - 23:57
Which m42 screw thread lens??
Maybe the fungus has a liking to SMC coatings:?: It's the Canada Balsam that was used to cement elements together that they really like getting their teeth into. They don't like the new synthetic stuff which is why you hardly ever see a modern lens with fungus. :wink: I have become quite adept at...
Posted by hefty1 on 11/03/2009 - 00:55
What filter
A UV or skylight filter was a natural thing to put on all your lenses when shooting film. It would help with the slight blueish cast that shooting outdoors would bring on film. This is unnecessary on digital, so the only reason you would use one would be for protection. The digital sensor is ...
Posted by pschlute on 11/03/2009 - 10:57
Pentax SMC 100mm f4 Macro M
It is good, but has a reputation for separation of the front elements, which frequently shows a cloudiness or concentric circles inside the front element, looking like cleaning marks.
Posted by smc on 12/03/2009 - 13:09
Using 200mm lens query
Also remember to factor in the 1.5 crop which makes the 200mm lens a 300mm lens and therefore you would need a shutter speed of 1/300 sec or faster. Is this really true? I believe a 200mm lens is 200mm no matter what sensor size you have. So the 1/focal length rule should still apply. However, th...
Posted by terje-l on 18/03/2009 - 10:12
Using 200mm lens query
Also remember to factor in the 1.5 crop which makes the 200mm lens a 300mm lens and therefore you would need a shutter speed of 1/300 sec or faster. Is this really true? I believe a 200mm lens is 200mm no matter what sensor size you have. So the 1/focal length rule should still apply. It is still a ...
Posted by pschlute on 18/03/2009 - 10:25
Using 200mm lens query
Is this really true? I believe a 200mm lens is 200mm no matter what sensor size you have. So the 1/focal length rule should still apply. Yes, and it's even in the instruction book. It is still a 200mm lens, but as stated already it has the field of view of a 300mm on 35mm, so 1/300 sec would be the ...
Posted by johnriley on 18/03/2009 - 10:33
How good is these lenses?
It's been said on this forum before (and elsewhere) that medium/large format lenes don't have such high resolution as 35mm-format lenses. Doesn't that bother you, Stefan? Pete, the lenses are made for large film so the circle of confusion is larger then with the more precise lenses needed for the sm...
Posted by Anvh on 19/03/2009 - 20:26
