All Forum Comments
Comment by ChrisA posted on Baby photography - Any tips? at 27/01/2014 - 18:05
My brother used to have one, and he still tells the story of when he dropped it on a rock, and it was the rock that broke.
Comment by ChrisA posted on which pentax film body to get? at 26/01/2014 - 20:39
Not knocking the legend that is the K1000, but metering is a lot more convenient with the later bodies. The ME Super in particular is a very good compromise between very basic, and convenient metering.
Make sure the seals aren't perished.
Comment by ChrisA posted on which pentax film body to get? at 26/01/2014 - 20:29
I seem to rember the 18-135mm being slated for poor performance (as well as cost) yet if you ask about a general walkabout lens this always comes out the favorite recommendation.
I had a play with a K-3 and a 20-40 in SRS last week; it's certainly nicely made. But although it's very quiet, it's nowhere near as fast focusing as the 18-135, which is the only other DC motor lens I've used.
I still don't get the zoom range at all - it's not something I'd be buying, regardless of IQ.
Comment by ChrisA posted on DA 20-40mm Ltd - anyone had a go yet? at 25/01/2014 - 18:06
What a bizarre thread...I thought the OP was asking about using a particular lens for portraits....
Is it possible for the mods to move the relevant posts from here to that one?
Comment by ChrisA posted on Pentax 50mm 1:2 SMC Pentax-M. Any good for portraits? at 25/01/2014 - 15:29
By enlarging it you have moved the vanishing points further apart and changed the perspective.
Perspective is about the *relative* sizes of different objects in the image, or of the lines between them if you like.
This does not change because of enlargement.
Comment by ChrisA posted on Pentax 50mm 1:2 SMC Pentax-M. Any good for portraits? at 25/01/2014 - 12:51
Comment by ChrisA posted on Studio Portrait at 25/01/2014 - 11:55
All this talk about lenses changing perspective is a misunderstanding of what is happening. Only viewing distance changes perspective.
First, both complete frames:
50mm:
[IMG]http://i162.photobucket.com/albums/t244/chris5gd/Technical/IMGP6448-50mm-full_zpsf635f3b2.jpg[/IMG]
.. and 140mm:
[IMG]http://i162.photobucket.com/albums/t244/chris5gd/Technical/IMGP6449-140mm-full_zps8de4e263.jpg[/IMG]
And here's a crop of the 50mm one that's (to within a couple of pixels) the same view as the 140mm one:
[IMG]http://i162.photobucket.com/albums/t244/chris5gd/Technical/IMGP6448-50mm-crop_zpsc8bda50a.jpg[/IMG]
I took the 50mm one first, and did nothing other than rotate the zoom ring and refocus for the 140mm one. Obviously, the camera was on the tripod the whole time and didn't move, even for the refocusing
Hopefully it's clear that all the objects in the second two images are the same relative sizes as one another (ie have the same perspective). The easiest way of comparing them is to open them up in separate browser tabs and switch betweeen them.
Comment by ChrisA posted on Pentax 50mm 1:2 SMC Pentax-M. Any good for portraits? at 25/01/2014 - 11:44
Why stop now please?
I'm doing my best to stay calm, by imagining Algi as a house-elf* from Harry Potter. I can therefore feel sympathy instead of frustration.
Eventually, of course, it's possible, albeit unlikely, that Algi will take two pictures where he hasn't moved the camera in between, and the sport will end.
_________
*much more like Dobby than Kreacher
Comment by ChrisA posted on Pentax 50mm 1:2 SMC Pentax-M. Any good for portraits? at 19/01/2014 - 23:11
Flashbacks no longer...
Comment by ChrisA posted on Pentax 50mm 1:2 SMC Pentax-M. Any good for portraits? at 19/01/2014 - 21:23


3) flash won't hurt baby but might startle, so keep the power dialled down.