Search results for 'sensor cleaning' - page 162
Travelling
I have just recently come back from Hong Kong & Macau. I took a Sigma 17-50 F2.8, a DA* 50-135 and Tamron 1.4x teleconverter (as well as a large sensor compact with a fast and wide zoom lens). Apart from the Grand Prix in Macau I used only the Sigma 17-50 and the compact (which have similar focal...
Posted by percy on 29/11/2014 - 11:30
18-55mm kit or 28mm A f2,8
Very sound advice from Bjørn, Nigel and Rich. The kit lenses made by Pentax are much more than "get you started" things. I have a WR and standard mkI and they're both fine lenses. I'm lucky to have a Pentax M 28mm 3.5 which is wonderful but for landscape pictures you often need something wider. My a...
Posted by bwlchmawr on 30/11/2014 - 06:39
77mm 1.8 limited lens
Hello, The 77mm f/1.8 lens does have AF and manual focus. The focussing speed is generally quick. You state that you want to shoot indoors. That changes the usefulness of this lens as it may tend to be too long on a cropped sensor for indoor shots. The 50mm f/1.4 may be a step in the right direct...
Posted by K10D on 18/12/2014 - 22:35
77mm 1.8 limited lens
I do have the 77 f1.8 and the 31 f1.8. I personally prefer the 77 for portrait and landscape shots. I am not to keen on landscapes with wide angles. I think the 77 is so fantastic. It is really wasted on an APS-C sensor. I haven't been on this forum for a while and it seems there is n...
Posted by Horst on 21/12/2014 - 10:00
77mm 1.8 limited lens
Thanks Horst - would live to see some of your photos if you get time! I do have the 77 f1.8 and the 31 f1.8. I personally prefer the 77 for portrait and landscape shots. I am not to keen on landscapes with wide angles. I think the 77 is so fantastic. It is really wasted on an APS-C senso...
Posted by nj1975 on 21/12/2014 - 17:32
Nifty fifty lens conundrum...
The 1.8 is a great optic. I personally have found 50mm lenses too long for a city lens on a cropped sensor. It's fine for people at distance but not up to much for buildings. What will you be shooting? Best regards
Posted by K10D on 15/01/2015 - 22:35
Nifty fifty lens conundrum...
I have the 50mm 1.8, cracking lens, and based on reviews it would be hard for me to consider the 1.4 which has not had a good press. I also agree that a 50 mm might be a stretch for your needs as on a cropped sensor it is actually classed as a short/ medium telephoto at 75 mm when applying the 1...
Posted by Daronl on 17/01/2015 - 23:50
fast 2.8 lens
This focal length / format matter is always a discussion point isn't it ..... To me, I see focal length as relating directly to the idea of ' reach' ...ie how far forwards we can see with a lens of each focal length. This is of course exactly the same for any focal length on any format, as it is a p...
Posted by McGregNi on 27/01/2015 - 17:41
50 mm macro 2.8 and 100 mm wr macro over saturating
I don't think a lens is capable of being ' oversaturated' by definition .... Nor unsaturated. That is the result of the camera sensor and processing really.
Posted by McGregNi on 03/02/2015 - 05:31
HD PENTAX-D FA ★ 70-200mm F2.8
Specs for the 150-450... - Dust and water structure. 21 places in the entire ceiling - Image circle covers the 35mm format - Can be handheld shooting in a compact design - HD coating - Three ED lens, one abnormal low dispersion lens - The latest optical design corresponding to the high pixel...
Posted by jules on 04/02/2015 - 16:21
Film Era Lenses - Image Assessments Please
The member Daroni has raised some interesting points in his thread about the suitability of old glass on modern digital sensors ... ... As someone who has specifically acquired some film-era lenses, both for use now and thinking towards a future FF body, I have been really interested in th...
Posted by McGregNi on 04/02/2015 - 18:26
Film Era Lenses - Image Assessments Please
It's important to realise that all lenses have aberrations, these are present whether you use film or a sensor. For the same frame size, these aberrations are likely to be much more significant to reductions in IQ than any difference due to film versus sensor. It is also important to realise that ab...
Posted by johnha on 04/02/2015 - 22:56
Pentax HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW & HD PENTAX-D FA* 70-200mm F2.8 ED DC AW Lenses
Wont be trading in my Sigma 70-200 f/2.8 any time soon then.... Wonder what my FF FA*400 5.6 will be worth now? Either way I would wait until there is some consumer reports on either lens before taking the plunge... Will I go for a FF body? probably not, the larger sensor/higher pixel count w...
Posted by andy_bell on 05/02/2015 - 08:38
full frame with old lenses
The KAF mount used on current Pentax DSLRs with aps-c sensors is the same size as on previous film - era cameras, and current DA lenses have the same mount size as well. Both film-era lenses and modern DA lenses will fir on and work and will work on all Pentax SLR bodies (digital and film). A Ful...
Posted by McGregNi on 05/02/2015 - 07:45
full frame with old lenses
Although Pentax DA (APS-C) lenses should fit the new FF K-mount body, I am curious regarding whether some DAs will be usable as FF lenses rather than "crop mode" lenses. One problem could be vignetting of the image on the larger sensor, due possibly to a smaller image circle. I have just tried m...
Posted by MrB on 05/02/2015 - 10:08
full frame with old lenses
I think many DA lenses will work well on full frame. Indeed, all of the DA primes from 35mm (except the 35macro) are believed to be full frame compatible - some might show some slight vignetting but that's no biggie. You still might find with the wider primes that whilst you get vignetting you...
Posted by DrOrloff on 06/02/2015 - 09:18
full frame with old lenses
Mmmm. Very true. Well my FA 35mm f2 and 50mm 1.7 will surely be a great start , it would be just such a shame to part my beloved 16-50. We'll just have to wait and see. Maybe they might come out with some new system in ff the makes the DA 's fully compatible???I think many DA lenses will work well o...
Posted by mattox on 06/02/2015 - 10:10
49 PK full frames presently on market
With the new unnamed Pentax full frame expected out in the market by the end of this year; there has been considerable concern over the lenses, and how they will work with the new full frame PK. For todays existing PK full frame options for sale (as new) there are some 49 selections that will ena...
Posted by 50mpCMOS on 06/02/2015 - 18:32
So which lenses will you buy for the new FF
When the K-3 was launched I was hoping the investment Ricoh had put in would indicate a FF body was on the horizon. I'm also still shooting film so it made sense to get some FA lenses (for coverage & aperture rings) to add to various manual focus lenses I have historically. Before I knew it, my 'K3 ...
Posted by johnha on 12/02/2015 - 13:21
Heads up... Mega Pentax Lens deals next weekend
My mouse was hovering over a 100 macro (do I really need one?) but a thought came up - what happens if I fancy a full frame some time? Taking stock, I have 3 APS-C compatible lenses plus an old 35 mm film era zoom and a sigma 150-500 zoom which is full-frame compatible. Would a better strategy be to...
Posted by RobL on 28/03/2015 - 17:04
