andy_shand1

would be good to see some of this on the forum ...interested in this myself.

moderate adjustments should be ok in pshop but severe ones mean that say the small area of the image at the top of say a skyscraper needs to be enlarged a lot ...the image may not survive this expansion.

 

also the other downside is that image composition at the time rather than some pleasent/unpleasent suprises in photoshop can be avoided.

 

a great lens with a viewcamera is hard to emulate ...in photoshop it all feels kind of fudged.

what i normally do with medium format and 35mm is just stuff them in my pockets....and walk through. With large format maybe not so easy.

i have no idea about a horseman or that specific 617 back but i found using a recessed lensboard on a sinar with a 72 and a chinese back gave me infinity..granted the lens settings were a little cramped ... but being a wide angle freak even i had to admit that 72 on a 617 on anything other landscapes was a little too wide...unless you like things stetched beyond whats acceptable in a normal image.

another vote for the art!!

here is the answer ... buy a couple of those cheap flyswatter type shade device accesories that clip to the lensboard and can be positioned while looking through the groundglass so that there isnt any mystery as to what is acctually happening when you take the shot!!

the f2 is the one i use..its an improvement over the f1 and offers the best movement to weight ratio from my experience.

you want to try it in the summer in hong kong...the whole bag becomes one sweaty blob...nice.

sorry..i missed that previous link.

the doughnut ring...is this a lee item? i assume it brings the 47xl from 90 to 100..and how much is it?

did you read about the recent uk romanian immigrant syndicate that made like half a million doing just that by preying on lost bidders by offering the same product outside the ebay system using direct payment other than say paypal. ...its a scam.

if you hold your ear to the ground you can hear the horses coming.

michael..thanks for that ...its worth also considering that if you cant see the lens from the side ..well there is no way that it can see you....but the idea of moving the camera along a line say ten times at twenty metres with a normal lens and then stitching each shot together sounds like a very interesting experiment...i might even try it myself.

there is a new emerging technology which i am playing around with at the moment ..its all about having a 180 fisheye lens on the end of a capture chip. The clever stuff is the computer being able to decode the fisheye image into an undistorted image in any direction. This includes of course 360 not just 180. Its nowhere near being useable for anything apart from web type res but you can see that this is the future.... the idea of pointing a camera in a particular direction with a set format will be a little odd to our grandchildren.

i find people answering posts read the last two and the first and then just spout whatever it is that comes to mind.

not just the previous post..everything after.

i just get the feeling that either you ignored or didnt understand my first post..

6x12 + schneider 47 + f2. No distortion and the distance to that reading room aint much.

 

http://afwphoto.com/britmus01.jpg

i think the bang for your buck could be a schneider 47 sa on a viewcamera like a sinar f2 with a 6x12 roll film back. Something about that combination..widest angle..lightest weight ..largest shift and all on a good old roll film.. ideal.

saw one on ebay for 800 dollars but it seemed quite low res like 2500 x 3600?

just done an autolevels on it..its seems much better now.

beat me to it.

looks great although the colour spectrum (not ir ones) seems a bit odd...do these generate full 16bit files? Acctually for architecture movement might not be such a problem and the ir response could be great for some schulman type shots. Might even cut through the pollution in this part of the world.

you can shift the back around all you want but you will be limited to the fall off circle of that particular lens.

 

I have a 6x17 chinese back on a 4x5 sinar f2 body and using a 72 schneider sa xl giving an undistorted 115 degrees. This setup has limited movement. A 90 sa xl on 6x17 will give you 83 degrees but masses of movement..so you could shift and stich and be back up to about 110 deg. Problem is that the 4x5 body hits the back of the lens. If you where to use and 8x10 body and say a 72 sa xl lens..well you could get some pretty wide images with shift because the lateral shifty wont be restricted by the camera body at all..so you are up to 115 degrees. The 38 and 43 xl lenses are 120 deg ..so if you were to use these on an 8x10 ...well thats about as big as you can get.

 

Problem is that you dont want distortion but the further away from the centre you get the more stretched the image becomes ...which acctually isnt distortion at all but everyone will think it is.

 

For architecture stretching is unusable.

 

The only way you could get an really wide true undistorted images of a wide building landscape is to take shots without using a wide lens say every 30m along a line parallel to the building and then stitch the bits in the middle that have minimum stretching. I think this is a photogrametric survey????..usually done from cherry pickers i think.

you know ..if a scan back could be picked up for 2k...well that might be worth it just to play around with it. Problem is you cant use it outside on location which is what most of my work entails if your working by yourself. Also if your shooting in the canging evening light ..i suppose you could scan from bottom to top.. it would be like using a gradient nd filter.