Search results for 'sensor cleaning' - page 99
28mm shift
Im pretty sure there are 2 forum members who have one.. One I think is gartmore I do ideed, without a doubt the finest lens I own, but as everyone has pointed out about as much use on a digital body as a 50mm Shift would be on a film one! I'd imagine that when shifted the light would be falling on...
Posted by gartmore on 26/09/2008 - 08:54
Evaluating the 18-55 mm kit lens
If it is actually sharp, but the overall impression is a soft image, check for dust and mist (including on the sensor), then try out different in camera sharpness and contrast settings. (more contrast?!) The fact that you are getting this illusion probably isnt to do with the sharpness, just that...
Posted by Isaaceastgate on 29/09/2008 - 16:47
Wide Angle Prime Lens.....
CA is definitely a function of the lens, but purple fringing is often attributed to the cameras sensor. It'd be interesting to see if there is any difference between the K10D and K20D as their sensors employ totally dissimilar technologies (CCD & CMOS respectively).
Posted by Mannesty on 02/10/2008 - 23:28
Wide Angle Prime Lens.....
CA is definitely a function of the lens, but purple fringing is often attributed to the cameras sensor. In this context I found this interesting - I hadn't previously understood the difference between longitudinal and lateral CA. And longitudinal CA can look exactly like purple fringing. I d...
Posted by ChrisA on 03/10/2008 - 07:57
Wide Angle Prime Lens.....
CA is definitely a function of the lens, but purple fringing is often attributed to the cameras sensor. That doesn't make sense when you get more purple fringing with one lens than with another similar lens. My definition of purple fringing is purple fringing. That is fringes that are purple.
Posted by iceblinker on 03/10/2008 - 09:01
Would this be fun?
you are right hefty1. but at thirty bucks? people should remember, thet even a high def vid cam will ring in with a three megapixel sensor (forget ten mp stills they're interpolated), so a high def video cam lens (pro quality) only needs half the resolution of a kit lens for a six mp dslr.... a le...
Posted by Don on 08/10/2008 - 16:28
Frustrated with pentax 1.7 50mm smc manual focus lens
First question: Why does the aperture show as f/0 ? Maybe the contacts need cleaning if it's an A series lens. Second question: Do you wear glasses or contact lenses when using your camera. AF lenses are unaffected by either, but MF probably will be affected if you haven't set up your dioptre corre...
Posted by Mannesty on 20/10/2008 - 23:12
Possible misprice Jessops Pentax 50-200mm f/4-5.6 DA ED Lens
Just spoken to customer service, it looks like its all been a scam, there are no lenses available at either of the 'discounted' prices. Pentax will not supply them any lenses, and according to the customer service agent, 'we are in the process of informing all people who have placed an order'. ...
Posted by stevek10d on 08/01/2009 - 13:42
Possible misprice Jessops Pentax 50-200mm f/4-5.6 DA ED Lens
I just went for two microfibre cleaning cloths - the first was discounted and kept it under £50 so I had to get the second. The lens arrived about 2 working days after ordering. So, initially it was NOT a scam.
Posted by polchraine on 08/01/2009 - 14:12
31 Beautiful Millimeters
Addict! :D There's also a DA 15 Limited on the horizon (according to the roadmap--subject to change, etc)! If you're only shooting digital, and just talking about image quality and sharpness, I think the digital lenses will provide a great image for your K110D. The 21mm limited provides a nice...
Posted by farfisa on 04/11/2008 - 13:35
Pentax Lenses - reliable Secondhand sellers?
Ha! Sorry, I took too long to write that post and see you're already over the Sigma ;) For card size though, I'd get the 8 Gig card and shoot RAW. On my K10D (with the smaller 10 MP sensor), I get 244 images on a 4 GB card shooting RAW. I'd look at a Sandisk Extreme III SDHC--very fast and con...
Posted by farfisa on 03/11/2008 - 19:37
Pentax Lenses - reliable Secondhand sellers?
Heavier bag + more contents = more strain on your back and shoulders. Maybe I'm a weakling, but I have enough trouble with the weight of stuff I fit in the 100. You might intend only to use the extra space of a larger bag for lightweight bits & bobs, but you'll be temped to carry more lenses as w...
Posted by hefty1 on 03/11/2008 - 20:56
16-45mm lens
I've replaced several scratched filters through being in contact with other stuff in a gadget bag etc, I'm glad it wasn't the front element of the lens. That's what lens caps are for. :wink: As for cleaning, I never touch the glass on my lenses unless cleaning off marks left by liquids (and then ...
Posted by hefty1 on 05/11/2008 - 15:07
16-45mm lens
About every month or so I clear out my camera bag and give it good 'hoover' to get rid of any dust and grit. When my lenses need cleaning I first I use Rocket blower to get rid of any grit, then, if necessary, a brush with a sable 'mop' watercolour brush, very expensive to buy today, were cheap w...
Posted by screwdriver on 05/11/2008 - 17:52
advice on longer lens, please
oldie at photography..newbee at dslr. I have several lens up to 200ml. Looking to extend this to 300ml or so. Would you reccomend that I look to used, say 70 or 80 to 300 or look to the recent Pentax releases. Cost is an issue but the right choice is a bigger issue. Can you good guys give me so...
Posted by Transit on 12/11/2008 - 06:50
Tamron 90mm 2.8 macro
I had the one before the DI version and the DS hated it. It was a very nice lens mechanically and very sharp but caused the sensor a huge amount of blue / purple fringing. I ended up with the Pentax FA100 instead which was probably the best lens I've ever had and had none of the issues the Tamron...
Posted by JohnMcD on 17/07/2009 - 17:13
Pentax SMC DA 18-55mm F3.5-5.6 II
The DA 18-55 MkII is supposed to have better resolution to more closely match the capabilities of the K20D sensor. I have one spare which I bought from SRS together with my K20D to get the cashback offer. I have the DA* 16-50mm, DA 16-45mm, & DA 18-55mm MkI lenses so it's surplus to my requiremen...
Posted by Mannesty on 16/11/2008 - 10:49
Lensbabies
struggling to understand the lensbaby principle...interested in macro. would be interested in any experience in using the G3 lensbaby, please Firstly, Lensbabies *aren't* macro lenses. You can buy "macro" adaptors for them but these are just close-up filters that attach to the front in the same way...
Posted by hefty1 on 20/11/2008 - 14:42
Stacking
First of all sorry for my late reply, I was quite busy :oops: Thank you all very much for the comments and advice! :D The second (and I think even better) option would be a Zeiss (CZJ) Flektogon 35/f2.4. Zeis sounds always good, how hard are they to get with a B Mount. Do you see one of them mo...
Posted by Anvh on 27/11/2008 - 13:30
DA* 16-50 - cold feet
The zimbio test chart has too much "crap" on it. You can't know where the sensor is focusing if it is not lined up properly with the viewfinder indicator, so you can't adjust the focus properly. If you are so inclined, you could look at "Yvon Bourque blog" for very well made charts for focus adjus...
Posted by pentaxian450 on 05/12/2008 - 01:38
