Search results for 'back focus' - page 1250
Full continuously variable Apeture priority with M lenses
The normal procedure to use K or M lenses on the *st D is either, set the apeture, press the green button, focus, and shoot, or set your apeture, pull the mode ring to DOF preview, let it go, focus and shoot. This means if the light changes you need to pull the ring or push the button again, to ...
Posted by Arthur Dent on 05/08/2005 - 03:51
Full continuously variable Apeture priority with M lenses
Test it. I got an 85mm f/2 M lens to expose properly in a number of different lighting conditions, specifically starting at one illumination and then changing, and exposing without having the camera stop the lens down again. I will re-try the test, but I'm sure it worked. It worked in the field, ...
Posted by Arthur Dent on 06/08/2005 - 00:53
Full continuously variable Apeture priority with M lenses
OK, kids here are the hard results of a controlled test. Firmware version 1.12. Meter operating time set to 30 seconds, in custom functions. Format set to RAW Focus selector set to Manual (it's an M lens, after all) Mode set to Apeture Priority ("Av"). 50mm f/1.4 Pentax-M lens set to...
Posted by Arthur Dent on 06/08/2005 - 03:47
Full continuously variable Apeture priority with M lenses
Actually, I modified my post to include the test you suggested. The same apature yielded different shutter speeds, and all exposures were correct. I don't know about the different times the lens stops down. Try this: Put the camera on Av and Manual Focus. Put in an M lens. Set the apat...
Posted by Arthur Dent on 06/08/2005 - 17:32
Full continuously variable Apeture priority with M lenses
Try this: Put the lens on f22. Select manual mode. Press the green button. Note the shutter speed indicated. Put the lens on f22. Select Av mode. Lightly depress the shutter button to activate the meter. Note the shutter speed indicated. Here's the problem; you haven't pulled the ring ...
Posted by Arthur Dent on 06/08/2005 - 20:19
unable to load images to computer
I agree Tony, using the cable direct to the camera is just a good as using a card reader. My only concern is that the very small USB socket on the camera seems fragile and I wonder how long it will last. Having said that, I don’t suppose it does the SD cards much good taking them in and out all the ...
Posted by Anonymous on 15/08/2005 - 12:09
DSLRs + older lenses
I'd just like to reinforce statements made by John, George, Matt and others re. the quality of older A, F and indeed Tamron adaptall 2 manual lenses on Pentax DSLRs. I picked up my *istDL body this morning and I'm very impressed indeed, the results (JPEG Best) with the lenses I've tried so far - ...
Posted by Kimbo on 15/08/2005 - 17:22
DSLRs + older lenses
I have some M lenses, and using them on the *st D is really easy with firmware 1.12. I haven't shown a proof book in two years; clients want digital delivery. I have a fine range of the old M lenses so the *st D was the senasble choice. I have one A lens, the superb 50mm 1.4 A lens. It is now ...
Posted by Arthur Dent on 17/08/2005 - 01:34
DSLRs + older lenses
It's only yesterday that I was re-running lens tests with my *istDS. The A lenses on test were the 50mm f2, 24-50mm f4 and 35-70mm f4. Also a 24-90mm FA and the 18-55mm DA. All tested at 50mm, open aperture and f8. At f8 all were excellent, but the (slight) edge was held by the 50mm prime. There ...
Posted by Kimbo on 17/08/2005 - 15:58
DSLR and SLR lenses
Interesting, just when you think you've got your head round something........... Yes, the DL manual states "compared to a 35mm camera, the value is roughly one aperture setting lower (the focus range becomes narrower)." I'd assumed that the effect would be similar to using a 1.5x converter :r...
Posted by Kimbo on 16/08/2005 - 18:42
DSLR and SLR lenses
Simon, Yes, you're right. The *ist-D/DS/DL have a "multiplier" of 1.5. All other makes of DSLR have between 1.3 and 1.6x multiplier. The only exception is the Canon 1Ds which has a full frame sensor - and the price to match it :P I did a diagram waaay back that you might find useful in visualis...
Posted by MattMatic on 17/08/2005 - 23:09
Up-sampling Digital Images
Arthur, Doh! I should have realised.... I do use Adobe CS and have the Pentax RAW converter installed - just didn't connect the three letters together. I became a RAW convert about 6 months ago - even bought some big gig CF cards to prove there was no going back! After cutting my teeth on a K...
Posted by John Newton on 23/08/2005 - 18:23
UV filters on Digital *istDs
A few years back I dropped my camera off a mountain. It landed lens down. Fortunately I'd been using a cir-pol filter at the time, which took the brunt of the impact. Ever since I've had two rules: 1) Keep the camera strap around your neck at all times, no matter how tempting the shot. 2) Alwa...
Posted by Anonymous on 06/09/2005 - 13:30
UV filters on Digital *istDs
This is one of the original religious wars in photography. This question has been argued as far back as I can remember (the 1950's). My personal experience is that: 1 - I don't notice any difference if I use a well-maintained quality filter on the camera, and 2 - Keeping the filter clean ...
Posted by Arthur Dent on 07/09/2005 - 11:31
Setting white balance using studio flash with istD
Just another thing: Shoot RAW because it will cope with about 1 stop overexposure, and 2 stops underexposure. This is particularly helpful as you can claw back detail from shadows that would otherwise have been lost. If you haven't used RAW, I would say there are two good choices: 1. Pixma...
Posted by MattMatic on 07/09/2005 - 10:37
Setting white balance using studio flash with istD
Thanks for your advice. The shoot went well. manually set the white balance as pre the instructions and the studio flashes fired. OK came up in the LCD. I was mightly relieved went the shots came back from the lab without a problem. Cheers Colin.
Posted by Anonymous on 13/09/2005 - 13:14
RAW converters
C1 has WAY too much contrast You're using it wrong. C1 and B4 had nothing similar (that I could find). The response curve is on the "Exposure" tab. My suggestion is for portraiture you select the film response curve "More Shadows". You have to spend time and do the tutorial. Sort the WB out fir...
Posted by MattMatic on 09/09/2005 - 11:18
RAW converters
I have ACR and have tried the evaluation copy of C1 LE and then Pro so I got 45 days to trial it. Initially, I thought that C1 knocked spots of ACR in that I could produce much sharper results without creating colour noise. But now the trial has run out and I am back with ACR, I have realised I was ...
Posted by Anonymous on 09/09/2005 - 18:37
RAW converters
Not always Arthur... but most definitely in general ;) There's a very interesting argument for applying "Presharpening" at the beginning of a RAW workflow - to "undo" the softening of the RAW conversion. As far as I can remember it is the process of applying subtle sharpening first. I'll dig o...
Posted by MattMatic on 21/09/2005 - 06:26
I just ordered an *ist D...
I think you got an excellent deal, and you have confirmed that the D is still available for those who want it. Although a bit slower than the DS (which is a significant negative for some people), the D is a more flexible camera, and a better buy for those who like to stretch their equipment. C...
Posted by George Lazarette on 20/09/2005 - 19:29
