Search results for 'sensor cleaning' - page 743
Curved sensor
Lenses project a curved image onto a flat surface, and good ones do it very well, managing to keep centre and edges in sharp focus at the same time. This is especially true of macro lenses, which are often used to make flat copies. A cheap lens will show field curvature and at wider apertures the...
Posted by johnriley on 08/01/2018 - 10:16
Curved sensor
The other thing is deliberate field curvature and Minolta made a VC lens where the amount of curvature could be dialled in. This made semi-circular groups of people easy to photograph without distortion and whilst keeping them all sharp. It's not been a mainstream idea that's caught on in any great ...
Posted by petrochemist on 08/01/2018 - 12:16
Curved sensor
Many thanks for the correction!
Posted by johnriley on 08/01/2018 - 12:56
Curved sensor
Lenses project a curved image onto a flat surface, and good ones do it very well, managing to keep centre and edges in sharp focus at the same time. This is especially true of macro lenses, which are often used to make flat copies. A cheap lens will show field curvature and at wider apertures the...
Posted by Gajan on 08/01/2018 - 17:37
Curved sensor
Think the rumor has been discarded as fake. At least in regards to the GR.
Posted by Mag07 on 08/01/2018 - 19:10
Curved sensor
Varible field curvature lenses are an entirely different concept to curved sensor. lenses manipulate circular lens groups to modify the peripheral field curvature projected on to a FLAT plane, this is a very different concept to projecting on to a curved plane. I can see it possibly working for...
Posted by McBrian on 08/01/2018 - 22:00
Curved sensor
Sadly it's not likely to be about the results, but the fact it's curved (i.e. about to become trendy). Curved Tv screens are dreadful unless you're positioned perfectly. John's right, film cameras with rubbish plastic lenses used a curved pressure plate to make up for the lens aberrations. However, ...
Posted by johnha on 09/01/2018 - 03:11
Exciting year
I wonder if a new 645 camera might actually have a full 645 sensor rather than a cropped version. The current crop sensor in the 645d&z is 44x33mm which isn't that much larger than the 36x24mm of the K-1. A 'full frame' 645 sensor would be 56x42mm. I'm not sure cramming 100mp into the current sen...
Posted by JAK on 13/01/2018 - 21:20
Exciting year
Let me just check my bank balance.... No still can't afford a 645, never mind a new one with an even bigger sensor. Nothing more exciting than that on the horizon? Ah well, I'll stick with the K5ii.
Posted by Gwyn on 13/01/2018 - 22:16
Ricoh G800 tough
Looks good with some intresting features Password protection , restricts access to a variety of camera functions Back illuminated sensor And takes aaa batteries without an adapter http://industry.ricoh.com/en/dc/g/g800/features.html Regards
Posted by theonenadeem on 03/02/2018 - 15:27
Left handed DSLR ?
Jason Shutter ? Must be a colleague of Sarah Sensor
Posted by pschlute on 24/02/2018 - 15:07
Left handed DSLR ?
Jason Shutter ? Must be a colleague of Sarah Sensor It’s a Specsaver ad which explains why the N***n name has been erased.
Posted by RobL on 24/02/2018 - 16:23
K3ii replacement
No I was forced by the lack of support and no third party support with what I require and if you you are in business you don’t stop making your flagship cropped sensor camera without a new one there to take its place that is known as suicide for any company they proved that they can’t go forward any...
Posted by stu62 on 27/12/2018 - 13:27
An evolutionary dead end?
Mirrorless isn’t the holy grail so many claim; it is an overcrowded market and Canon have said they are expanding in that field in the face of competition from Sony. I have tried several bodies and found none I would swap from DSLR for, even the Hasselblad viewfinder image is juddery when you pan, a...
Posted by RobL on 10/04/2018 - 08:46
An evolutionary dead end?
On the flip side, I do get the appeal of the whatyouseeiswhatyouget nature of mirrorless. On landscapes especially, live view is much more useful than an optical viewfinder. Focussing aids like focus peaking and digital zoom are excellent for manual focus work. Tracking AF across a full sens...
Posted by richandfleur on 10/04/2018 - 10:53
An evolutionary dead end?
On the flip side, I do get the appeal of the whatyouseeiswhatyouget nature of mirrorless. On landscapes especially, live view is much more useful than an optical viewfinder. Focussing aids like focus peaking and digital zoom are excellent for manual focus work. Tracking AF across a full sens...
Posted by RobL on 10/04/2018 - 15:01
An evolutionary dead end?
With optical displays you see everything right down to specks of dust hairs etc.-- Try cleaning the muck out of the viewfinder :D Last year I bought a new FF Sony & kit lens for just over £600. I have no regrets at all. The kit lens is slow but sharp, the EVF is a bit clunky and the shutter is l...
Posted by DOIK on 10/04/2018 - 20:03
An evolutionary dead end?
Personally although I pop into look at DPR from time to time I've never felt it true independent journalism under Amazon. The big makes pay a lot of money with loaned stock to get into big cabinets in our few remaining camera stores, at least that is what salesmen tell me. I bet they also pay Amazon...
Posted by wvbarnes on 10/04/2018 - 21:31
An evolutionary dead end?
24MP compared to 36MP :shock: Hardly an eye opener :lol: -- If you want to play that game, the Sony a7R II is a 42MP sensor, and the Canon 5Ds is 50.6MP, and the Pentax 645Z is 51.4MP :roll: All cameras have strengths and weaknesses. The A7III has nearly 700 phase-detection AF points across...
Posted by richandfleur on 11/04/2018 - 09:16
An evolutionary dead end?
like it or not video is as important as stills to many users especially pros. I have opted to not replace my pentax gear as it wears out or becomes obsolete. this coming from a guy who was loyal for over 35 years and many cameras over the years. sadly it is too cost prohibitive to run multiple...
Posted by Don on 12/04/2018 - 15:10
